J Xu, W Sun, Y Wang, H Jiang, H Ding, Q Cheng, N Bao, J Meng
Purpose of the study: To evaluate the clinical results and safety of fungal periprosthetic joint Infections (fPJIs) using two-stage treatment protocol.
Material and methods: 8 patients with fPJIs (3 hips and 5 knees) using two-stage revision were reviewed retrospectively and followed up at least 2 years. The preoperative demographic data, two-stage treatment protocol, results of microbiology and histologic workup and postoperative follow-up results (reimplantation success rate and infection free time) were recorded.
Results: 7 patients got successful reimplantation, with a 75% reimplantation success rate. Two patients got knee arthrodesis eventually. All patients were infection free with a median follow-up of 4.0 ± 2.0 years (range, 2-7 years). Of them, Candida species were found in 7 patients, while non-Candida specimen was only isolated in 1 patient with Aspergillus. Only 2 patients had coexisting bacterial infection (Methicillin-resistant coagulase-negative Staphylococci and Proteus mirabilis respectively). The average interval between the initial surgery and diagnosis of fPJIs was 21.50±34.79 months (range, 4-104 months). The mean time of spacer implantation was 7.75±2.77 months (range, 6-14 months). None serious complication or above knee amputation was found.
Discussion: fPJIs are very rare and considerable challenge after total hip or knee arthroplasty. The goal of therapy is to eradicate local infection and maintain function. Candida species were the most common pathogen. The duration between spacer placement and staged reimplantation was highly variable, and generally dependent upon the results of joint aspirates and infl ammatory markers. The current study shows that the two-stage treatment protocol is recommended for fungal periprosthetic hip and knee joint infections.
Conclusions: The two-stage treatment protocol is recommended for fungal periprosthetic hip and knee joint infections. The safety and effi cacy of biantibiotical impregnated (antifungal + antibiotics) cement spacer is confi rmed. Further evidence-based work is needed to determine the optimal drug dose and reimplantation time.
{"title":"Two-Stage Treatment Protocol of Fungal Periprosthetic Hip and Knee Joint Infections: the Clinical Experience from a Single Center Experience.","authors":"J Xu, W Sun, Y Wang, H Jiang, H Ding, Q Cheng, N Bao, J Meng","doi":"10.55095/achot2024/003","DOIUrl":"10.55095/achot2024/003","url":null,"abstract":"<p><strong>Purpose of the study: </strong>To evaluate the clinical results and safety of fungal periprosthetic joint Infections (fPJIs) using two-stage treatment protocol.</p><p><strong>Material and methods: </strong>8 patients with fPJIs (3 hips and 5 knees) using two-stage revision were reviewed retrospectively and followed up at least 2 years. The preoperative demographic data, two-stage treatment protocol, results of microbiology and histologic workup and postoperative follow-up results (reimplantation success rate and infection free time) were recorded.</p><p><strong>Results: </strong>7 patients got successful reimplantation, with a 75% reimplantation success rate. Two patients got knee arthrodesis eventually. All patients were infection free with a median follow-up of 4.0 ± 2.0 years (range, 2-7 years). Of them, Candida species were found in 7 patients, while non-Candida specimen was only isolated in 1 patient with Aspergillus. Only 2 patients had coexisting bacterial infection (Methicillin-resistant coagulase-negative Staphylococci and Proteus mirabilis respectively). The average interval between the initial surgery and diagnosis of fPJIs was 21.50±34.79 months (range, 4-104 months). The mean time of spacer implantation was 7.75±2.77 months (range, 6-14 months). None serious complication or above knee amputation was found.</p><p><strong>Discussion: </strong>fPJIs are very rare and considerable challenge after total hip or knee arthroplasty. The goal of therapy is to eradicate local infection and maintain function. Candida species were the most common pathogen. The duration between spacer placement and staged reimplantation was highly variable, and generally dependent upon the results of joint aspirates and infl ammatory markers. The current study shows that the two-stage treatment protocol is recommended for fungal periprosthetic hip and knee joint infections.</p><p><strong>Conclusions: </strong>The two-stage treatment protocol is recommended for fungal periprosthetic hip and knee joint infections. The safety and effi cacy of biantibiotical impregnated (antifungal + antibiotics) cement spacer is confi rmed. Further evidence-based work is needed to determine the optimal drug dose and reimplantation time.</p><p><strong>Key words: </strong>two-stage treatment protocol, fungal periprosthetic infections, hip spacer, knee spacer.</p>","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 1","pages":"52-56"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140048504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D Pokorný, M Šlouf, V Gajdošová, I Šeděnková, M Vyroubalová, K Němec, P Fulín
<p><strong>Purpose of study: </strong>Total joint replacements (TJR) have become the cornerstone of modern orthopedic surgery. A great majority of TJR employs ultrahigh molecular weight polyethylene (UHMWPE) liners. TJR manufacturers use many different types of UHMWPE, which are modified by various combinations of crosslinking, thermal treatment, sterilization and/or addition of biocompatible stabilizers. The UHMWPE modifications are expected to improve the polymer's resistance to oxidative degradation and wear (release of microparticles from the polymer surface). This manuscript provides an objective, non-commercial comparison of current UHMWPE formulations currently employed in total knee replacements.</p><p><strong>Materials and methods: </strong>UHMWPE liners from 21 total knee replacements (TKR) were collected which represent the most implanted liners in the Czech Republic in the period 2020-2021. The UHMWPEs were characterized using several methods: infrared microspectroscopy (IR), non-instrumented and instrumented microindentation hardness testing (MH and MHI), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and solubility measurements. The above-listed methods yielded quite complete information about the structure and properties of each UHMWPE type, including its potential long-term oxidation resistance.</p><p><strong>Results: </strong>For each UHMWPE liner, IR yielded information about immediate oxidative degradation (in the form of oxidation index, OI), level of crosslinking (trans-vinylene index, VI) and crystallinity (CI). The MH and MHI testing gave information about the impact of structure changes on mechanical properties. The remaining methods (DSC, TGA, and solubility measurements) provided additional information regarding the structure changes and resistance to long-term oxidative degradation. Statistical evaluation showed significant differences among the samples as well as interesting correlations among the UHMWPE modifications, structural changes, and mechanical performance.</p><p><strong>Discussion: </strong>Surprisingly enough, UHMWPE materials from different manufacturers showed quite different properties, including the resistance against the long-term oxidative degradation, which is regarded as one of the main reasons of TJR failures. The most promising UHMWPE types were crosslinked materials with biocompatible stabilizers.</p><p><strong>Conclusions: </strong>Current UHMWPE liners from different manufactures used in total knee replacements exhibit significantly different structure and properties. From the point of view of clinical practice, the traditional UHMWPE types, which contained residual radicals from irradiation and/or gamma sterilization, showed inferior resistance to oxidative degradation and should be avoided. The best properties were observed in modern UHMWPE types, which combined crosslinking, biocompatible stabilizers, and sterilization by ethylenoxide or gas plasma.</p><p><strong>K
{"title":"[Comparison of the Quality of the Most Commonly Used New UHMWPE Articulation Inserts of the Total Knee Replacement].","authors":"D Pokorný, M Šlouf, V Gajdošová, I Šeděnková, M Vyroubalová, K Němec, P Fulín","doi":"10.55095/achot2024/026","DOIUrl":"https://doi.org/10.55095/achot2024/026","url":null,"abstract":"<p><strong>Purpose of study: </strong>Total joint replacements (TJR) have become the cornerstone of modern orthopedic surgery. A great majority of TJR employs ultrahigh molecular weight polyethylene (UHMWPE) liners. TJR manufacturers use many different types of UHMWPE, which are modified by various combinations of crosslinking, thermal treatment, sterilization and/or addition of biocompatible stabilizers. The UHMWPE modifications are expected to improve the polymer's resistance to oxidative degradation and wear (release of microparticles from the polymer surface). This manuscript provides an objective, non-commercial comparison of current UHMWPE formulations currently employed in total knee replacements.</p><p><strong>Materials and methods: </strong>UHMWPE liners from 21 total knee replacements (TKR) were collected which represent the most implanted liners in the Czech Republic in the period 2020-2021. The UHMWPEs were characterized using several methods: infrared microspectroscopy (IR), non-instrumented and instrumented microindentation hardness testing (MH and MHI), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and solubility measurements. The above-listed methods yielded quite complete information about the structure and properties of each UHMWPE type, including its potential long-term oxidation resistance.</p><p><strong>Results: </strong>For each UHMWPE liner, IR yielded information about immediate oxidative degradation (in the form of oxidation index, OI), level of crosslinking (trans-vinylene index, VI) and crystallinity (CI). The MH and MHI testing gave information about the impact of structure changes on mechanical properties. The remaining methods (DSC, TGA, and solubility measurements) provided additional information regarding the structure changes and resistance to long-term oxidative degradation. Statistical evaluation showed significant differences among the samples as well as interesting correlations among the UHMWPE modifications, structural changes, and mechanical performance.</p><p><strong>Discussion: </strong>Surprisingly enough, UHMWPE materials from different manufacturers showed quite different properties, including the resistance against the long-term oxidative degradation, which is regarded as one of the main reasons of TJR failures. The most promising UHMWPE types were crosslinked materials with biocompatible stabilizers.</p><p><strong>Conclusions: </strong>Current UHMWPE liners from different manufactures used in total knee replacements exhibit significantly different structure and properties. From the point of view of clinical practice, the traditional UHMWPE types, which contained residual radicals from irradiation and/or gamma sterilization, showed inferior resistance to oxidative degradation and should be avoided. The best properties were observed in modern UHMWPE types, which combined crosslinking, biocompatible stabilizers, and sterilization by ethylenoxide or gas plasma.</p><p><strong>K","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 4","pages":"207-216"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
<p><strong>Purpose of the study: </strong>The study aimed to evaluate the results of closed reduction and epiphyseodesis of unstable slips of the proximal femoral epiphysis. The hypothesis was that the clinical and radiological results of this method and incidence of avascular necrosis are comparable to the results of closed reduction and open reduction using surgical hip dislocation reported by literature.</p><p><strong>Material and methods: </strong>In the period 2013-2023, 20 patients were treated for unstable slips in one institution. Whereas the boys were older (mean age of 13.4 years) than girls (mean age of 11.6 years), the gender distribution was equal. Acute on chronic slips prevailed over the acute slips (ratio 3:1). The slips were treated using the closed reduction, transphyseal fixation and capsular decompression at 6 to 240 hours after slip (81 hours on average). All patients were treated concurrently on the contralateral side as the prevention of the slip or to treat the grade I slips (two patients). The follow-up ranged from 7 months to 7 years. Clinical results were evaluated according to two scores: 1) own score (Bulovka University Hopspital score) based on the reduction of ROM, shortening of extremity and limitations of activities; 2) D'Aubigne-Postel score. In the radiological evaluation, correction of slip angle, alpha-angle, avascular necrosis (AVN) and the prominence of the anterior margin of the femoral neck on axial radiographs were evaluated.</p><p><strong>Results: </strong>According to the Bulovka University Hospital score, there were 10 excellent results (50%) with no limitation of activity, including sport, in tree cases the results were very good (15%) and in five cases good (25%), respectively, with some limitation of activity, and two results were unsatisfactory (10%) with severe limitation of activity due to the AVN. According to the D'Aubigne-Postel score, there were 14 excellent results (70%), four good results (20%), and two unsatisfactory results (10%). The slip reduction was as follows: under 20 deg. in five patients; under 30 deg. in 10 patients, and over 30 deg. in five patients, respectively. Alfa-angle was greater than 63 degrees (range 45-88 deg.) on average. Prominence of the off-set epiphysis-femoral neck and femoroacetabular impingement (FAI) were observed in six patients. Remodelling of this prominence was seen in one patient four years after surgery. Shortening of the femoral neck over 1 cm was reported in two patients. Complete AVN with severe deformity of the hip was noted in two patients.</p><p><strong>Discussion: </strong>Our hypothesis was confirmed because the results of treatment of the unstable slips by closed reduction are comparable with the published results of the same method and with surgical hip dislocation. The results correspond with those of large published cohorts of patients concerning the correction as well as rate of complications.</p><p><strong>Conclusions: </strong>According to
{"title":"[Mid Term Results of Treatment of Unstable Slips of Proximal Femoral Epiphysis by Closed Reduction].","authors":"J Chomiak, M Ošťádal, P Dungl","doi":"10.55095/achot2024/025","DOIUrl":"https://doi.org/10.55095/achot2024/025","url":null,"abstract":"<p><strong>Purpose of the study: </strong>The study aimed to evaluate the results of closed reduction and epiphyseodesis of unstable slips of the proximal femoral epiphysis. The hypothesis was that the clinical and radiological results of this method and incidence of avascular necrosis are comparable to the results of closed reduction and open reduction using surgical hip dislocation reported by literature.</p><p><strong>Material and methods: </strong>In the period 2013-2023, 20 patients were treated for unstable slips in one institution. Whereas the boys were older (mean age of 13.4 years) than girls (mean age of 11.6 years), the gender distribution was equal. Acute on chronic slips prevailed over the acute slips (ratio 3:1). The slips were treated using the closed reduction, transphyseal fixation and capsular decompression at 6 to 240 hours after slip (81 hours on average). All patients were treated concurrently on the contralateral side as the prevention of the slip or to treat the grade I slips (two patients). The follow-up ranged from 7 months to 7 years. Clinical results were evaluated according to two scores: 1) own score (Bulovka University Hopspital score) based on the reduction of ROM, shortening of extremity and limitations of activities; 2) D'Aubigne-Postel score. In the radiological evaluation, correction of slip angle, alpha-angle, avascular necrosis (AVN) and the prominence of the anterior margin of the femoral neck on axial radiographs were evaluated.</p><p><strong>Results: </strong>According to the Bulovka University Hospital score, there were 10 excellent results (50%) with no limitation of activity, including sport, in tree cases the results were very good (15%) and in five cases good (25%), respectively, with some limitation of activity, and two results were unsatisfactory (10%) with severe limitation of activity due to the AVN. According to the D'Aubigne-Postel score, there were 14 excellent results (70%), four good results (20%), and two unsatisfactory results (10%). The slip reduction was as follows: under 20 deg. in five patients; under 30 deg. in 10 patients, and over 30 deg. in five patients, respectively. Alfa-angle was greater than 63 degrees (range 45-88 deg.) on average. Prominence of the off-set epiphysis-femoral neck and femoroacetabular impingement (FAI) were observed in six patients. Remodelling of this prominence was seen in one patient four years after surgery. Shortening of the femoral neck over 1 cm was reported in two patients. Complete AVN with severe deformity of the hip was noted in two patients.</p><p><strong>Discussion: </strong>Our hypothesis was confirmed because the results of treatment of the unstable slips by closed reduction are comparable with the published results of the same method and with surgical hip dislocation. The results correspond with those of large published cohorts of patients concerning the correction as well as rate of complications.</p><p><strong>Conclusions: </strong>According to","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 4","pages":"199-206"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R Patel, G Orfanos, W Gibson, T Banks, G McConaghie, R Banerjee
Purpose of the study: Hip osteoarthritis (OA) has a prevalence of around 6.4% and is the second most commonly affected joint. This review aims to assess the clinical outcomes of intra-articular high molecular weight hyaluronic acid (HMWHA) in the management of hip osteoarthritis.
Material and methods: We conducted a comprehensive search across PubMed, Google Scholar, and the Cochrane Library for randomised trials investigating the effectiveness of high molecular weight hyaluronic acid (HMWHA) in the treatment of hip osteoarthritis. Quality and risk of bias assessments were performed using the Cochrane RoB2 tool. To synthesise the data, we utilised the Standardised Mean Difference (SMD) for assessing pain relief through the Visual Analogue Scale (VAS) and the Lequesne index (LI) for evaluating functional outcomes. Risk Ratio (RR) was calculated to assess the occurrence of complications.
Results: A total of four studies involving HMWHA and control groups were included. The standardised mean difference (SMD) for the Visual Analogue Scale (VAS) (SMD -0.056; 95% CI; -0.351, 0.239; p = 0.709) and the Lequesne index (SMD -0.114; 95% CI; -0.524, 0.296; p = 0.585) were not statistically significant. Analysis for complications demonstrated an overall relative risk ratio (RR) of 0.879 (95% CI; 0.527, 1.466; p = 0.622), and was not statistically significant.
Discussion and conclusions: Intra-articular HMWHA in hip OA can significantly reduce pain and improve functional recovery when compared with the condition before treatment. However, there is no significant difference between HMWHA, or saline, or other therapeutic treatments. Currently, available evidence indicates that intra-articular HMWHA in hip OA would not increase the risk of adverse events.
Key words: hip osteoarthritis, hyaluronic acid, intra-articular, molecular weight, viscosupplementation.
{"title":"Viscosupplementation with High Molecular Weight Hyaluronic Acid for Hip Osteoarthritis: a Systematic Review and Meta-Analysis of Randomised Control Trials of the Efficacy on Pain, Functional Disability, and the Occurrence of Adverse Events.","authors":"R Patel, G Orfanos, W Gibson, T Banks, G McConaghie, R Banerjee","doi":"10.55095/ACHOT2024/009","DOIUrl":"10.55095/ACHOT2024/009","url":null,"abstract":"<p><strong>Purpose of the study: </strong>Hip osteoarthritis (OA) has a prevalence of around 6.4% and is the second most commonly affected joint. This review aims to assess the clinical outcomes of intra-articular high molecular weight hyaluronic acid (HMWHA) in the management of hip osteoarthritis.</p><p><strong>Material and methods: </strong>We conducted a comprehensive search across PubMed, Google Scholar, and the Cochrane Library for randomised trials investigating the effectiveness of high molecular weight hyaluronic acid (HMWHA) in the treatment of hip osteoarthritis. Quality and risk of bias assessments were performed using the Cochrane RoB2 tool. To synthesise the data, we utilised the Standardised Mean Difference (SMD) for assessing pain relief through the Visual Analogue Scale (VAS) and the Lequesne index (LI) for evaluating functional outcomes. Risk Ratio (RR) was calculated to assess the occurrence of complications.</p><p><strong>Results: </strong>A total of four studies involving HMWHA and control groups were included. The standardised mean difference (SMD) for the Visual Analogue Scale (VAS) (SMD -0.056; 95% CI; -0.351, 0.239; p = 0.709) and the Lequesne index (SMD -0.114; 95% CI; -0.524, 0.296; p = 0.585) were not statistically significant. Analysis for complications demonstrated an overall relative risk ratio (RR) of 0.879 (95% CI; 0.527, 1.466; p = 0.622), and was not statistically significant.</p><p><strong>Discussion and conclusions: </strong>Intra-articular HMWHA in hip OA can significantly reduce pain and improve functional recovery when compared with the condition before treatment. However, there is no significant difference between HMWHA, or saline, or other therapeutic treatments. Currently, available evidence indicates that intra-articular HMWHA in hip OA would not increase the risk of adverse events.</p><p><strong>Key words: </strong>hip osteoarthritis, hyaluronic acid, intra-articular, molecular weight, viscosupplementation.</p>","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 2","pages":"109-119"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141157454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose of the study: Os vesalianum pedis (OVP) is a rare accessory bone of the foot located at the base of the fifth metatarsal bone. It is usually asymptomatic and incidentally seen on radiographs. When symptomatic, it manifests itself with lateral foot pain. OVP, which can become symptomatic as a result of traumatic injuries, can also be confused with fracture. The aim of this study is to determine the prevalence and morphometric characteristics of OVP in the Turkish population.
Material and methods: Radiographic images of 5268 individuals aged 16 years and older (mean 39.65±17.21) who completed ossification of the fifth metatarsal bone were evaluated for OVP. Of the cases included in the study, 44.8% were female and 55.2% were male. The general and sex-based prevalence of OVP was calculated, and morphometric measurements were done.
Results: OVP prevalence in the Turkish population was found to be 0.15% regardless of sex. OVP prevalence was calculated to be 0.24% in men and 0.04% in women.
Conclusions: Anatomy, radiology, orthopedics and emergency medicine physicians are frequently encountered with foot disorders in clinical and educational practices. It is important to keep in mind the rare presence of OVP (0.15%), in the preliminary diagnosis.
Key words: os vesalianum pedis, accessory ossicle, foot, radiography.
研究目的足趾骨(Os vesalianum pedis,OVP)是一种罕见的足部附属骨,位于第五跖骨基部。它通常无症状,可在 X 光片上偶然发现。一旦出现症状,则表现为足部外侧疼痛。OVP可因外伤而出现症状,也可与骨折混淆。本研究旨在确定 OVP 在土耳其人群中的患病率和形态特征:对 5268 名 16 岁及以上(平均 39.65±17.21)第五跖骨骨化完成的人的 X 射线图像进行了 OVP 评估。在纳入研究的病例中,44.8% 为女性,55.2% 为男性。研究计算了OVP的总体患病率和基于性别的患病率,并进行了形态测量:结果表明:土耳其人口中的OVP患病率为0.15%,与性别无关。计算得出的OVP患病率男性为0.24%,女性为0.04%:解剖学、放射学、整形外科和急诊科医生在临床和教学实践中经常会遇到足部疾病。重要的是,在初步诊断时要牢记OVP的罕见存在(0.15%)。
{"title":"The Prevalence and the Clinical Importance of os vesalianum pedis.","authors":"C Uğuz Gençer, H Tetiker, M I Koşar, N Çullu","doi":"10.55095/ACHOT2024/053","DOIUrl":"https://doi.org/10.55095/ACHOT2024/053","url":null,"abstract":"<p><strong>Purpose of the study: </strong>Os vesalianum pedis (OVP) is a rare accessory bone of the foot located at the base of the fifth metatarsal bone. It is usually asymptomatic and incidentally seen on radiographs. When symptomatic, it manifests itself with lateral foot pain. OVP, which can become symptomatic as a result of traumatic injuries, can also be confused with fracture. The aim of this study is to determine the prevalence and morphometric characteristics of OVP in the Turkish population.</p><p><strong>Material and methods: </strong>Radiographic images of 5268 individuals aged 16 years and older (mean 39.65±17.21) who completed ossification of the fifth metatarsal bone were evaluated for OVP. Of the cases included in the study, 44.8% were female and 55.2% were male. The general and sex-based prevalence of OVP was calculated, and morphometric measurements were done.</p><p><strong>Results: </strong>OVP prevalence in the Turkish population was found to be 0.15% regardless of sex. OVP prevalence was calculated to be 0.24% in men and 0.04% in women.</p><p><strong>Conclusions: </strong>Anatomy, radiology, orthopedics and emergency medicine physicians are frequently encountered with foot disorders in clinical and educational practices. It is important to keep in mind the rare presence of OVP (0.15%), in the preliminary diagnosis.</p><p><strong>Key words: </strong>os vesalianum pedis, accessory ossicle, foot, radiography.</p>","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 5","pages":"296-300"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142574962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose of the study: In our study, it was aimed to evaluate the efficacy of microfracture and retrograde subchondral drilling on clinical outcomes in patients who underwent ankle arthroscopy due to osteochondral lesion of medial talus.
Material and methods: Twenty eight patients with osteochondral lesion of talus less than 1.5 cm2 treated with ankle arthroscopy were evaluated retrospectively. Microfracture was performed in 16 patients and retrograde subchondral drilling was performed in 12 patients that there was no loss of integrity in the cartilage layer or cartilage layer is partially preserved during ankle arthroscopy. Postoperative evaluations of the patients were done with Foot and Ankle Ability Measure (FAAM) and results of both group were compared statistically.
Results: The mean activities of daily living scale was 93.4±3.2 and sportive activity scale was 90.1±5.7 in the retrograde drilling group. In the micro-fracture group, mean activities of daily living scale was 93.8±4.1 and mean sportive activity scale was 88.9±9.5. No significant difference was found as a result of statistical comparisons of both groups results.
Discussion: It has been determined that the size and preservation of the integrity of talar osteochondral lesions are important factors on clinical results. Results of arthroscopic debridement, microfracture and drilization are not good in lesions larger than 1.5 cm2 and lesions with impaired integrity. In our study, depending on the general literature, osteochondral lesions in talus were less than 1.5 cm2 in patients who underwent arthroscopic micro fracture and retrograde drilling.
Conclusions: Both microfracture and retrograde subchondral drilling are effective treatment methods with good clinical results for talar osteochondral lesions less than 1,5cm2 . Retrograde subchondral drilling can be an alternative treatment method with the reliability of clinical results in patients with no loss of the integrity of the cartilage layer or cartilage layer is partially preserved.
{"title":"Comparison of Arthroscopic Microfracture and Retrograde Subchondral Drilling in the Treatment of Osteochondral Lesions of Talus.","authors":"U O Kasman, Ö Korkmaz","doi":"10.55095/ACHOT2024/031","DOIUrl":"https://doi.org/10.55095/ACHOT2024/031","url":null,"abstract":"<p><strong>Purpose of the study: </strong>In our study, it was aimed to evaluate the efficacy of microfracture and retrograde subchondral drilling on clinical outcomes in patients who underwent ankle arthroscopy due to osteochondral lesion of medial talus.</p><p><strong>Material and methods: </strong>Twenty eight patients with osteochondral lesion of talus less than 1.5 cm2 treated with ankle arthroscopy were evaluated retrospectively. Microfracture was performed in 16 patients and retrograde subchondral drilling was performed in 12 patients that there was no loss of integrity in the cartilage layer or cartilage layer is partially preserved during ankle arthroscopy. Postoperative evaluations of the patients were done with Foot and Ankle Ability Measure (FAAM) and results of both group were compared statistically.</p><p><strong>Results: </strong>The mean activities of daily living scale was 93.4±3.2 and sportive activity scale was 90.1±5.7 in the retrograde drilling group. In the micro-fracture group, mean activities of daily living scale was 93.8±4.1 and mean sportive activity scale was 88.9±9.5. No significant difference was found as a result of statistical comparisons of both groups results.</p><p><strong>Discussion: </strong>It has been determined that the size and preservation of the integrity of talar osteochondral lesions are important factors on clinical results. Results of arthroscopic debridement, microfracture and drilization are not good in lesions larger than 1.5 cm2 and lesions with impaired integrity. In our study, depending on the general literature, osteochondral lesions in talus were less than 1.5 cm2 in patients who underwent arthroscopic micro fracture and retrograde drilling.</p><p><strong>Conclusions: </strong>Both microfracture and retrograde subchondral drilling are effective treatment methods with good clinical results for talar osteochondral lesions less than 1,5cm2 . Retrograde subchondral drilling can be an alternative treatment method with the reliability of clinical results in patients with no loss of the integrity of the cartilage layer or cartilage layer is partially preserved.</p><p><strong>Key words: </strong>talus, osteochondral lesion, microfracture, subchondral drilling.</p>","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 4","pages":"234-238"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Introduction: During the 20th century, the life expectancy increased by 30 years. At the same time, the number of people living longer than that has grown significantly. The aim of this study was to investigate whether total hip or knee arthroplasty (THA or TKA) in patients over 80 years of age does not reduce their life expectancy.
Material and methods: The study examined the data of patients who had undergone THA or TKA between 1994 and 2002 and were older than 80 years at the time of surgery. The study group was divided into a group of patients in whom elective total hip or knee arthroplasty was performed for arthritis and into a group of patients who underwent the same procedure for proximal femur fracture. The investigated parameter was the real survival, which was compared with the life expectancy predicted by the Institute of Health Information and Statistics of the Czech Republic. We also monitored postoperative mortality and postoperative interval after which the life expectancy was no longer reduced.
Results: The study included 547 patients. Of whom, 96 patients underwent elective surgery (36%) and 351 patients underwent surgery for intracapsular hip fracture (64%). In the elective surgery group, the survival was longer than the national average: In the 80-84-year group, the median survival was 6.0 years vs. median life expectancy of 5.6 years; in the 85-89-year group, the median survival was 6.3 years vs. median life expectancy of 3.9 years. The fracture surgery group showed a decrease in the life expectancy compared to the national average - in the 80-84-year group, the median survival was 3.5 years vs. median life expectancy of 5.6 years, and in the 85-89-year group, the median survival was 2.9 years vs. median life expectancy of 3.9 years. The likelihood of postoperative mortality was significantly higher in the fracture group than in the elective group (p = 0.05 vs. 0.01), with the difference being the highest in the first 8 weeks after surgery.
Conclusions: Correctly indicated THA or TKA in patients over 80 years of age improves the quality of life of these patients and does not reduce the life expectancy. Intracapsular femoral neck fractures in patients of that age can still be considered as an indication for surgical treatment as a life-saving procedure.
Key words: total hip arthroplasty, total knee arthroplasty, osteoarthritis, hip fracture, life expectancy.
{"title":"[Effects of Total Hip or Knee Arthroplasty on Median Survival in Patients Aged 80 Years and Older].","authors":"R Kubeš, A Král, M Stollin, M Bobelyak","doi":"10.55095/ACHOT2024/052","DOIUrl":"https://doi.org/10.55095/ACHOT2024/052","url":null,"abstract":"<p><strong>Introduction: </strong>During the 20th century, the life expectancy increased by 30 years. At the same time, the number of people living longer than that has grown significantly. The aim of this study was to investigate whether total hip or knee arthroplasty (THA or TKA) in patients over 80 years of age does not reduce their life expectancy.</p><p><strong>Material and methods: </strong>The study examined the data of patients who had undergone THA or TKA between 1994 and 2002 and were older than 80 years at the time of surgery. The study group was divided into a group of patients in whom elective total hip or knee arthroplasty was performed for arthritis and into a group of patients who underwent the same procedure for proximal femur fracture. The investigated parameter was the real survival, which was compared with the life expectancy predicted by the Institute of Health Information and Statistics of the Czech Republic. We also monitored postoperative mortality and postoperative interval after which the life expectancy was no longer reduced.</p><p><strong>Results: </strong>The study included 547 patients. Of whom, 96 patients underwent elective surgery (36%) and 351 patients underwent surgery for intracapsular hip fracture (64%). In the elective surgery group, the survival was longer than the national average: In the 80-84-year group, the median survival was 6.0 years vs. median life expectancy of 5.6 years; in the 85-89-year group, the median survival was 6.3 years vs. median life expectancy of 3.9 years. The fracture surgery group showed a decrease in the life expectancy compared to the national average - in the 80-84-year group, the median survival was 3.5 years vs. median life expectancy of 5.6 years, and in the 85-89-year group, the median survival was 2.9 years vs. median life expectancy of 3.9 years. The likelihood of postoperative mortality was significantly higher in the fracture group than in the elective group (p = 0.05 vs. 0.01), with the difference being the highest in the first 8 weeks after surgery.</p><p><strong>Conclusions: </strong>Correctly indicated THA or TKA in patients over 80 years of age improves the quality of life of these patients and does not reduce the life expectancy. Intracapsular femoral neck fractures in patients of that age can still be considered as an indication for surgical treatment as a life-saving procedure.</p><p><strong>Key words: </strong>total hip arthroplasty, total knee arthroplasty, osteoarthritis, hip fracture, life expectancy.</p>","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 5","pages":"276-281"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142574899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Transphyseal fractures of the distal humerus are usually seen in children younger than 3 years of age and are considered as Salter-Harris Type I epiphysiolysis. Neonatal transphyseal distal humerus injuries are extremely rare. It usually occurs due to trauma during difficult labour but can also be seen after child abuse. Since the distal humerus is composed of cartilaginous tissue in newborns, it is difficult to make a diagnosis with direct radiography. Patients are often diagnosed with elbow dislocation. However, elbow dislocation is almost never seen under the age of 3 years. Transphyseal fractures can be seen as a result of manoeuvres performed to deliver the baby during difficult normal delivery. Transphyseal humeral injuries can also be seen after caesarean section, child abuse and falling on the hyperextended arm. Clinical symptoms include pain, swelling, ecchymosis and crepitation at the elbow. Pseudoparalysis is present due to pain. In children with a history of difficult birth or trauma, evaluation with direct radiography should be performed initially. Radiocapitellar line is distorted on radiographs and the elbow joint appears subluxated. The treatment algorithm for transfusional humeral fractures in neonates is varied. It should be remembered that patients in this age group have a tremendous healing capacity. In conservative treatment, 2-4 weeks of follow-up with a long-arm splint after reduction is sufficient. In addition, closed reduction-internal fixation or open reduction-internal fixation can be applied according to the amount of displacement of the fracture. Cubitus varus, osteonecrosis, growth disturbance, decreased range of motion, compartment syndrome, neurovascular injury and infection are the main complications seen after transfusional humeral fractures.
肱骨远端横突骨折通常见于 3 岁以下的儿童,属于 Salter-Harris I 型骨外溶解。新生儿肱骨远端横突骨折极为罕见。它通常发生于难产时的外伤,但也可见于虐待儿童后。由于新生儿的肱骨远端是由软骨组织构成的,因此很难通过直接放射线检查做出诊断。患者通常被诊断为肘关节脱位。然而,3 岁以下的儿童几乎从未发生过肘关节脱位。肱骨横突骨折可能是在顺产过程中为接生婴儿而进行的操作造成的。肱骨骨骺损伤也可见于剖腹产、虐待儿童和手臂过伸跌倒后。临床症状包括肘部疼痛、肿胀、瘀斑和褶皱。疼痛会导致假性瘫痪。对于有难产史或外伤史的患儿,应首先通过直接放射线造影进行评估。桡髌线在X光片上变形,肘关节出现半脱位。新生儿肱骨骨折的治疗方法多种多样。需要注意的是,这个年龄段的患者有很强的愈合能力。在保守治疗中,复位后使用长臂夹板随访 2-4 周即可。此外,还可根据骨折移位的程度采用闭合复位内固定或切开复位内固定。立位不正、骨坏死、生长障碍、活动范围减小、隔室综合征、神经血管损伤和感染是输血性肱骨骨折后的主要并发症。
{"title":"A Rare Case:Transphyseal Distal Humerus Fracture in a Newborn.","authors":"A Yigitbay, M Çelik","doi":"10.55095/ACHOT2024/015","DOIUrl":"https://doi.org/10.55095/ACHOT2024/015","url":null,"abstract":"<p><p>Transphyseal fractures of the distal humerus are usually seen in children younger than 3 years of age and are considered as Salter-Harris Type I epiphysiolysis. Neonatal transphyseal distal humerus injuries are extremely rare. It usually occurs due to trauma during difficult labour but can also be seen after child abuse. Since the distal humerus is composed of cartilaginous tissue in newborns, it is difficult to make a diagnosis with direct radiography. Patients are often diagnosed with elbow dislocation. However, elbow dislocation is almost never seen under the age of 3 years. Transphyseal fractures can be seen as a result of manoeuvres performed to deliver the baby during difficult normal delivery. Transphyseal humeral injuries can also be seen after caesarean section, child abuse and falling on the hyperextended arm. Clinical symptoms include pain, swelling, ecchymosis and crepitation at the elbow. Pseudoparalysis is present due to pain. In children with a history of difficult birth or trauma, evaluation with direct radiography should be performed initially. Radiocapitellar line is distorted on radiographs and the elbow joint appears subluxated. The treatment algorithm for transfusional humeral fractures in neonates is varied. It should be remembered that patients in this age group have a tremendous healing capacity. In conservative treatment, 2-4 weeks of follow-up with a long-arm splint after reduction is sufficient. In addition, closed reduction-internal fixation or open reduction-internal fixation can be applied according to the amount of displacement of the fracture. Cubitus varus, osteonecrosis, growth disturbance, decreased range of motion, compartment syndrome, neurovascular injury and infection are the main complications seen after transfusional humeral fractures.</p>","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 2","pages":"120-122"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141157406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E Ipponi, M Cordoni, S DE Franco, F R Campo, A D'Arienzo, L Andreani
Purpose of the study: Hand enchondromas are benign cartilage bone tumors. Curettage represents the actual gold standard for hand enchondromas. Little has been written about the effectiveness of curettage on hand functionality.
Material and methods: In this retrospective study, we evaluated the effectiveness of curettage and bone grafting on the hand. For each case, we compared the pre-operative and post-operative QuickDASH of the treated limb. The final functional outcome was also evaluated by calculating the affected finger's Total Active Movement (TAM). Complications and local recurrences were recorded.
Results: Forty-five cases were included in our study. Fifteen of them had a pathological fracture. The mean pre-operative QuickDASH score was 48.4. No intraoperative complications occurred. After a mean follow-up of 38.1 months, the mean QuickDASH score had decreased to 4.4, and the TAM was optimal or sub-optimal. QuickDASH and TAM were significantly better for those with pathologic fractures before surgery. Only 3 cases (7%) had postoperative complications, and 1 (2%) had a local recurrence.
Discussion: Our results prove the effectiveness of curettage and early rehabilitation in increasing and restoring the performances of the treated hands. Our patients experienced a significant improvement in their functionality after surgery, generally passing from a poor to an excellent status. In our cohort, those who had a pathologic fracture before surgery had slightly but significantly worse functional outcomes compared to those who did not suffer pre-operative lesions.
Conclusions: Curettage and early postoperative rehabilitation can lead to good clinical and functional outcomes for hand enchondromas. Patients with pathologic fractures, although slightly exposed to a higher risk of sub-optimal outcomes, can also aim for good post-operative functionality.
{"title":"Hand Enchondromas Treated with Curettage: a Single Institution Experience and Literature Review.","authors":"E Ipponi, M Cordoni, S DE Franco, F R Campo, A D'Arienzo, L Andreani","doi":"10.55095/ACHOT2024/067","DOIUrl":"10.55095/ACHOT2024/067","url":null,"abstract":"<p><strong>Purpose of the study: </strong>Hand enchondromas are benign cartilage bone tumors. Curettage represents the actual gold standard for hand enchondromas. Little has been written about the effectiveness of curettage on hand functionality.</p><p><strong>Material and methods: </strong>In this retrospective study, we evaluated the effectiveness of curettage and bone grafting on the hand. For each case, we compared the pre-operative and post-operative QuickDASH of the treated limb. The final functional outcome was also evaluated by calculating the affected finger's Total Active Movement (TAM). Complications and local recurrences were recorded.</p><p><strong>Results: </strong>Forty-five cases were included in our study. Fifteen of them had a pathological fracture. The mean pre-operative QuickDASH score was 48.4. No intraoperative complications occurred. After a mean follow-up of 38.1 months, the mean QuickDASH score had decreased to 4.4, and the TAM was optimal or sub-optimal. QuickDASH and TAM were significantly better for those with pathologic fractures before surgery. Only 3 cases (7%) had postoperative complications, and 1 (2%) had a local recurrence.</p><p><strong>Discussion: </strong>Our results prove the effectiveness of curettage and early rehabilitation in increasing and restoring the performances of the treated hands. Our patients experienced a significant improvement in their functionality after surgery, generally passing from a poor to an excellent status. In our cohort, those who had a pathologic fracture before surgery had slightly but significantly worse functional outcomes compared to those who did not suffer pre-operative lesions.</p><p><strong>Conclusions: </strong>Curettage and early postoperative rehabilitation can lead to good clinical and functional outcomes for hand enchondromas. Patients with pathologic fractures, although slightly exposed to a higher risk of sub-optimal outcomes, can also aim for good post-operative functionality.</p><p><strong>Key words: </strong>hand, chondroma, QuickDASH, fracture, rehabilitation.</p>","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 6","pages":"331-338"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142942396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J Jablonský, Š Trnka, P Stejskal, L Hrabálek, T Wanek, M Vaverka
<p><strong>Purpose of the study: </strong>The annual number of spinal fusion procedures has been increasing and is well documented worldwide. The O-arm is slowly becoming the standard for transpedicular screw insertion. The accuracy and safety of this method have been confirmed by many studies. Therefore, the learning curve of this method and its use by younger surgeons is the focus of our investigation. Longer operative time and radiation exposure to the patient are its only disadvantages. Our aim was to evaluate the learning curve of neurosurgical residents receiving specialist training and to demonstrate the safety and accuracy compared to the conventional C-arm-guided screw insertion used in the surgical management of spondylolisthesis.</p><p><strong>Material and methods: </strong>Two groups of patients were evaluated - a retrospective cohort composed of patients with degenerative lumbar spinal instability indicated for C-arm-guided posterior transpedicular screw fixation and a prospective group of patients with the same diagnosis and surgical indication for O-arm-navigated screw insertion. In the retrospective group, the surgeons were largely experienced certified spine surgeons and neurosurgeons, whereas in the prospective group there were mainly neurosurgical residents receiving specialist training under the supervision of a certified physician. Both groups underwent a postoperative CT scan to evaluate the pedicle screw malposition using the Grade system and the anatomical plane of malposition. The operative times for both groups were recorded and for the O-arm navigated group a learning curve from the introduction of the method was generated. The values obtained were statistically analysed.</p><p><strong>Results: </strong>A relatively favourable learning curve of the O-arm-navigation was obtained, with operative times approximating the Carm-guided group at two years after the introduction of the method. Safety of the O-arm navigation applied by less experienced surgeons was confirmed through statistically significantly higher accuracy achieved in the O-arm group at the expense of longer operative times. Also, a significantly lower number of significant Grade 2 and 3 malposition was reported in the O-arm group.</p><p><strong>Discussion: </strong>The higher accuracy of transpedicular screw insertion in the navigation method has been confirmed multiple times. In our study, even in the group of less experienced surgeons. The favourable learning curve of neurological residents receiving specialist training is less documented. Time efficiency of the method and its safety when applied by younger surgeons could help make O-arm navigation the new gold standard in spine surgery. The longer operative time, the purchase price of the device, and a relatively higher radiation exposure to the patient continue to be its disadvantages.</p><p><strong>Conclusions: </strong>Based on the data obtained, a conclusion can be drawn that the O-arm navigation in sp
{"title":"[O-arm Versus C-arm: Comparison of the Learning Curves and Accuracy in Transpedicular Screw Fixation of Lumbar Spondylolisthesis].","authors":"J Jablonský, Š Trnka, P Stejskal, L Hrabálek, T Wanek, M Vaverka","doi":"10.55095/ACHOT2024/057","DOIUrl":"https://doi.org/10.55095/ACHOT2024/057","url":null,"abstract":"<p><strong>Purpose of the study: </strong>The annual number of spinal fusion procedures has been increasing and is well documented worldwide. The O-arm is slowly becoming the standard for transpedicular screw insertion. The accuracy and safety of this method have been confirmed by many studies. Therefore, the learning curve of this method and its use by younger surgeons is the focus of our investigation. Longer operative time and radiation exposure to the patient are its only disadvantages. Our aim was to evaluate the learning curve of neurosurgical residents receiving specialist training and to demonstrate the safety and accuracy compared to the conventional C-arm-guided screw insertion used in the surgical management of spondylolisthesis.</p><p><strong>Material and methods: </strong>Two groups of patients were evaluated - a retrospective cohort composed of patients with degenerative lumbar spinal instability indicated for C-arm-guided posterior transpedicular screw fixation and a prospective group of patients with the same diagnosis and surgical indication for O-arm-navigated screw insertion. In the retrospective group, the surgeons were largely experienced certified spine surgeons and neurosurgeons, whereas in the prospective group there were mainly neurosurgical residents receiving specialist training under the supervision of a certified physician. Both groups underwent a postoperative CT scan to evaluate the pedicle screw malposition using the Grade system and the anatomical plane of malposition. The operative times for both groups were recorded and for the O-arm navigated group a learning curve from the introduction of the method was generated. The values obtained were statistically analysed.</p><p><strong>Results: </strong>A relatively favourable learning curve of the O-arm-navigation was obtained, with operative times approximating the Carm-guided group at two years after the introduction of the method. Safety of the O-arm navigation applied by less experienced surgeons was confirmed through statistically significantly higher accuracy achieved in the O-arm group at the expense of longer operative times. Also, a significantly lower number of significant Grade 2 and 3 malposition was reported in the O-arm group.</p><p><strong>Discussion: </strong>The higher accuracy of transpedicular screw insertion in the navigation method has been confirmed multiple times. In our study, even in the group of less experienced surgeons. The favourable learning curve of neurological residents receiving specialist training is less documented. Time efficiency of the method and its safety when applied by younger surgeons could help make O-arm navigation the new gold standard in spine surgery. The longer operative time, the purchase price of the device, and a relatively higher radiation exposure to the patient continue to be its disadvantages.</p><p><strong>Conclusions: </strong>Based on the data obtained, a conclusion can be drawn that the O-arm navigation in sp","PeriodicalId":6980,"journal":{"name":"Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca","volume":"91 6","pages":"355-363"},"PeriodicalIF":0.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142942458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}