Abstract Objective The aim of this study was to measure and compare sub-bandage pressures after a rigid splint was applied to the forelimb of a dog by surgeons and veterinary students. Animals One, adult, Labrador Retriever. Methods Sub-bandage pressure was measured at five locations on the limb of a dog using a previously validated pneumatic compression measurement system over a 4-hour period after splint application. All participants received the same instructions and the same dog was used for each splint application. Results Across time and location, mean sub-bandage pressures from the experienced group were significantly greater than those from the inexperienced group at all transducer locations and at all time points. People from the inexperienced group recorded the greatest range in sub-bandage pressures and had significantly higher-pressure differences across the five locations sub-bandage pressure was measured. Conclusions and Clinical Relevance Surgeons applied their splint bandages with approximately 50% greater pressure and 50% less variability between locations. The large range in sub-bandage pressures found may suggest that decreased and/or increased sub-bandage pressure may predispose to bandage complications.
{"title":"Sub-Bandage Pressure in the Canine Forelimb after Rigid Splint Application by Surgeons and Veterinary Students","authors":"M. Vitt, D. Wingert, M. Conzemius","doi":"10.1055/s-0039-1695749","DOIUrl":"https://doi.org/10.1055/s-0039-1695749","url":null,"abstract":"Abstract Objective The aim of this study was to measure and compare sub-bandage pressures after a rigid splint was applied to the forelimb of a dog by surgeons and veterinary students. Animals One, adult, Labrador Retriever. Methods Sub-bandage pressure was measured at five locations on the limb of a dog using a previously validated pneumatic compression measurement system over a 4-hour period after splint application. All participants received the same instructions and the same dog was used for each splint application. Results Across time and location, mean sub-bandage pressures from the experienced group were significantly greater than those from the inexperienced group at all transducer locations and at all time points. People from the inexperienced group recorded the greatest range in sub-bandage pressures and had significantly higher-pressure differences across the five locations sub-bandage pressure was measured. Conclusions and Clinical Relevance Surgeons applied their splint bandages with approximately 50% greater pressure and 50% less variability between locations. The large range in sub-bandage pressures found may suggest that decreased and/or increased sub-bandage pressure may predispose to bandage complications.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131955862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Objective The aim of this study was to report the humeroulnar joint kinematics in a dog with medial coronoid process disease (MCPD) before and after dynamic proximal ulnar osteotomy (DPUO). Study Design A 15-month-old female Labrador Retriever with advanced MCPD was treated by DPUO and fragment removal. Bi-planar fluoroscopic kinematography of the affected joint was performed before and 12 weeks after DPUO along with computed tomography. Static axial radioulnar incongruence (sRUI), dynamic relative proximodistal radioulnar motion (dynamic RUI), axial humeroulnar rotation, as well as humeroulnar joint contact at the medial coronoid process (MCP) were calculated. Results Static axial radioulnar incongruence was reduced from 2.3 to 1.5 mm after DPUO but dynamic RUI remained unchanged (0.2 vs. 0.3 mm). Mean humeroulnar rotational amplitude increased from 2.6° (standard deviation 0.4) to 4.5° (standard deviation 2.0). Joint contact area at the MCP became substantially increased as well as broadly distributed among the MCP following DPUO (52.5 vs. 63.0%; p = 0.0012). Conclusion Dynamic proximal ulnar osteotomy failed to restore the radioulnar congruence and increased the humeroulnar rotational instability. No effect was observed on dynamic RUI. Nevertheless, joint contact area at the MCP was increased and became more homogeneously distributed, which might explain the beneficial effect of clinical outcome in this case.
摘要目的研究动态尺骨近端截骨术(DPUO)前后犬内侧冠突病(MCPD)的肱骨关节运动学变化。研究设计一只患有晚期MCPD的15月龄雌性拉布拉多猎犬，采用DPUO和碎片去除治疗。在DPUO前和DPUO后12周进行受影响关节的双平面透视运动学成像并进行计算机断层扫描。计算静态尺桡轴向不一致(sRUI)、动态尺桡近远端相对运动(dynamic RUI)、肱骨轴向旋转以及内侧冠突(MCP)处的肱骨关节接触。结果DPUO后，静态尺桡轴不一致度从2.3 mm减少到1.5 mm，但动态RUI保持不变(0.2 vs. 0.3 mm)。平均肱骨尺骨旋转幅度从2.6°(标准差0.4)增加到4.5°(标准差2.0)。DPUO后，MCP的关节接触面积大幅增加，并在MCP之间广泛分布(52.5% vs. 63.0%;p = 0.0012)。结论动态尺近端截骨术不能恢复尺桡关节的一致性，增加了肱骨尺侧旋转不稳定性。对动态RUI无影响。然而，MCP处的关节接触面积增加，分布更加均匀，这可能解释了本病例临床结果的有利影响。
{"title":"Three-Dimensional Joint Kinematics in a Canine Elbow Joint with Medial Coronoid Disease before and after Bi-Oblique Dynamic Proximal Ulnar Osteotomy","authors":"T. Rohwedder, Pia Rebentrost, P. Böttcher","doi":"10.1055/s-0039-1698440","DOIUrl":"https://doi.org/10.1055/s-0039-1698440","url":null,"abstract":"Abstract Objective The aim of this study was to report the humeroulnar joint kinematics in a dog with medial coronoid process disease (MCPD) before and after dynamic proximal ulnar osteotomy (DPUO). Study Design A 15-month-old female Labrador Retriever with advanced MCPD was treated by DPUO and fragment removal. Bi-planar fluoroscopic kinematography of the affected joint was performed before and 12 weeks after DPUO along with computed tomography. Static axial radioulnar incongruence (sRUI), dynamic relative proximodistal radioulnar motion (dynamic RUI), axial humeroulnar rotation, as well as humeroulnar joint contact at the medial coronoid process (MCP) were calculated. Results Static axial radioulnar incongruence was reduced from 2.3 to 1.5 mm after DPUO but dynamic RUI remained unchanged (0.2 vs. 0.3 mm). Mean humeroulnar rotational amplitude increased from 2.6° (standard deviation 0.4) to 4.5° (standard deviation 2.0). Joint contact area at the MCP became substantially increased as well as broadly distributed among the MCP following DPUO (52.5 vs. 63.0%; p = 0.0012). Conclusion Dynamic proximal ulnar osteotomy failed to restore the radioulnar congruence and increased the humeroulnar rotational instability. No effect was observed on dynamic RUI. Nevertheless, joint contact area at the MCP was increased and became more homogeneously distributed, which might explain the beneficial effect of clinical outcome in this case.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"337 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134503834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Formation of discreet bony sequestra is reported in three dogs presenting with post-traumatic osteomyelitis with no previous history of orthopaedic surgery. Two cases had a presumed or confirmed history of dog bites, while the third case had a fracture treated conservatively. All three were treated with surgical debridement and sequestrectomy with good outcome.
{"title":"Post-Traumatic Septic Bone Sequestration in Three Dogs","authors":"G. Hayes, K. Harris, S. Langley‐Hobbs","doi":"10.1055/S-0039-1692974","DOIUrl":"https://doi.org/10.1055/S-0039-1692974","url":null,"abstract":"Abstract Formation of discreet bony sequestra is reported in three dogs presenting with post-traumatic osteomyelitis with no previous history of orthopaedic surgery. Two cases had a presumed or confirmed history of dog bites, while the third case had a fracture treated conservatively. All three were treated with surgical debridement and sequestrectomy with good outcome.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114358600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Objective The aim of this study was to share clinical and radiological findings of extremely advanced osteochondrodysplasia. A 9-year-old Scottish Fold cat was presented with the complaint of difficulty in urination, defecation, respiration, standing and walking. Physical findings such as kyphosis, hyperflexion of joints and thick tail and, radiological findings including periosteal bone proliferation in distal extremities, ankylosing changes in spine and tail and, calcification of triceps brachii insertion were consistent with the most advanced osteochondrodysplasia ever documented. Antibiotic medications, anti-inflammatory drugs, vitamin C and enema were administered considering difficulty of urination, defecation and respiration. Then, glycosaminoglycans and prednisolone were administered for osteochondrodysplasia and increase in the movement of the cat was observed in a few days. Conclusion By sharing clinical and radiological findings of severe osteochondrodysplasia in advanced age, the importance of informing breeders and owners about uncontrolled breeding of these cats was emphasized.
{"title":"Osteochondrodysplasia in a 9-Year-Old Scottish Fold Cat","authors":"G. Turan, Z. Bozkan","doi":"10.1055/s-0039-1700850","DOIUrl":"https://doi.org/10.1055/s-0039-1700850","url":null,"abstract":"Abstract Objective The aim of this study was to share clinical and radiological findings of extremely advanced osteochondrodysplasia. A 9-year-old Scottish Fold cat was presented with the complaint of difficulty in urination, defecation, respiration, standing and walking. Physical findings such as kyphosis, hyperflexion of joints and thick tail and, radiological findings including periosteal bone proliferation in distal extremities, ankylosing changes in spine and tail and, calcification of triceps brachii insertion were consistent with the most advanced osteochondrodysplasia ever documented. Antibiotic medications, anti-inflammatory drugs, vitamin C and enema were administered considering difficulty of urination, defecation and respiration. Then, glycosaminoglycans and prednisolone were administered for osteochondrodysplasia and increase in the movement of the cat was observed in a few days. Conclusion By sharing clinical and radiological findings of severe osteochondrodysplasia in advanced age, the importance of informing breeders and owners about uncontrolled breeding of these cats was emphasized.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116891166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Objectives The aim of this study was to define a reliable ultrasound-guided proximolateral approach (PLA) for injection of the digital flexor tendon sheath (DFTS) in horses that would be as accurate as the landmark-guided basilar sesamoidean approach (BSA). Study Design Forty cadaveric limbs with no palpable effusion or DFTS abnormalities were randomly and evenly distributed between one senior (WRR) and one resident clinician (CRH) and between ultrasound-guided PLA and landmark-guided BSA groups. Limbs were injected with contrast, radiographed, and dissected. For each injection, the following was recorded: clinician, order of injection, number of attempts, if contrast was present within the DFTS, and if a structure other than the DFTS was penetrated. Results The ultrasound-guided PLA resulted in a greater number of successful injections into the DFTS than the landmark-guided BSA (19/20 vs. 16/20, respectively) with significantly fewer attempts (p = 0.03). The ultrasound-guided PLA also resulted in significantly less penetration of the surrounding soft tissue structures compared with the landmark-guided BSA (p = 0.02). Neither clinician experience nor injection number within the series was determined to have an effect on injection outcome. Conclusions The ultrasound-guided PLA to the DFTS is accurate and technically easy to perform. This approach should be considered for synoviocentesis of the DFTS, particularly in cases in which effusion is not present to reduce soft tissue trauma.
摘要目的本研究的目的是确定一种可靠的超声引导下近侧入路(PLA)用于马的指屈肌腱鞘(DFTS)注射，该入路与路标引导的基底海马idean入路(BSA)一样准确。研究设计40例无明显积液或DFTS异常的尸体肢体，随机均匀分布在1名老年人(WRR)和1名住院医生(CRH)之间，以及超声引导PLA组和地标引导BSA组之间。四肢注射造影剂，拍x线片，并进行解剖。对于每次注射，记录以下内容:临床医生，注射顺序，尝试次数，DFTS内是否存在造影剂，以及是否穿透了DFTS以外的结构。结果超声引导下PLA在DFTS内的注射成功率高于地标引导下BSA(分别为19/20 vs. 16/20)，且尝试次数明显少于BSA (p = 0.03)。与地标引导的BSA相比，超声引导的PLA对周围软组织结构的穿透也明显减少(p = 0.02)。临床医生经验和注射次数均未确定对注射结果有影响。结论超声引导下PLA对DFTS的定位准确，技术上易于操作。对于DFTS的滑膜穿刺术应该考虑这种方法，特别是在没有积液的情况下，以减少软组织创伤。
{"title":"Ultrasound-Guided Proximolateral Approach for Digital Flexor Tendon Sheath Injection in the Horse: A Cadaver Study","authors":"C. R. Horne, W. Redding, Hongyu Ru, L. Schnabel","doi":"10.1055/s-0039-1696962","DOIUrl":"https://doi.org/10.1055/s-0039-1696962","url":null,"abstract":"Abstract Objectives The aim of this study was to define a reliable ultrasound-guided proximolateral approach (PLA) for injection of the digital flexor tendon sheath (DFTS) in horses that would be as accurate as the landmark-guided basilar sesamoidean approach (BSA). Study Design Forty cadaveric limbs with no palpable effusion or DFTS abnormalities were randomly and evenly distributed between one senior (WRR) and one resident clinician (CRH) and between ultrasound-guided PLA and landmark-guided BSA groups. Limbs were injected with contrast, radiographed, and dissected. For each injection, the following was recorded: clinician, order of injection, number of attempts, if contrast was present within the DFTS, and if a structure other than the DFTS was penetrated. Results The ultrasound-guided PLA resulted in a greater number of successful injections into the DFTS than the landmark-guided BSA (19/20 vs. 16/20, respectively) with significantly fewer attempts (p = 0.03). The ultrasound-guided PLA also resulted in significantly less penetration of the surrounding soft tissue structures compared with the landmark-guided BSA (p = 0.02). Neither clinician experience nor injection number within the series was determined to have an effect on injection outcome. Conclusions The ultrasound-guided PLA to the DFTS is accurate and technically easy to perform. This approach should be considered for synoviocentesis of the DFTS, particularly in cases in which effusion is not present to reduce soft tissue trauma.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116702971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract A 4-year-old Dogue de Bordeaux developed acute onset sciatic neuropathy 9 weeks following stifle surgery of the contralateral pelvic limb. Pelvic radiography showed mild bilateral hip dysplasia. Magnetic resonance imaging of the pelvis and lumbosacral spine showed a fluid-filled structure caudal to the hip joint of the affected limb that was causing compression of the sciatic nerve. The lesion was surgically excised and bursitis was confirmed on histological examination. This is the first report of sciatic neuropathy secondary to bursitis in the dog.
摘要一名4岁的Dogue de Bordeaux患儿在对侧盆腔肢体膝关节手术9周后出现急性坐骨神经病变。骨盆x线片显示轻度双侧髋关节发育不良。骨盆和腰骶脊柱的磁共振成像显示患肢髋关节尾端有一个充满液体的结构，导致坐骨神经受压。手术切除病变，病理检查证实为滑囊炎。这是第一个报告的坐骨神经病变继发于滑囊炎的狗。
{"title":"Sciatic Neuropathy in a Dog Secondary to a Bursitis","authors":"C. Gomes, A. Anderson, J. Stewart","doi":"10.1055/S-0039-1677750","DOIUrl":"https://doi.org/10.1055/S-0039-1677750","url":null,"abstract":"Abstract A 4-year-old Dogue de Bordeaux developed acute onset sciatic neuropathy 9 weeks following stifle surgery of the contralateral pelvic limb. Pelvic radiography showed mild bilateral hip dysplasia. Magnetic resonance imaging of the pelvis and lumbosacral spine showed a fluid-filled structure caudal to the hip joint of the affected limb that was causing compression of the sciatic nerve. The lesion was surgically excised and bursitis was confirmed on histological examination. This is the first report of sciatic neuropathy secondary to bursitis in the dog.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127243608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Objective The aim of this study was to describe a novel technique using a gentamicin-impregnated polymethylmethacrylate (PMMA) plug for the surgical treatment of lumbosacral discospondylitis with concomitant instability. Clinical Report A 7-year-old male German Shepherd dog with lumbosacral (LS) discospondylitis and previously diagnosed with degenerative lumbosacral disease underwent ventral slot and distraction of the L7 to S1 intervertebral space with a gentamicin-impregnated PMMA plug. The lumbosacral joint was accessed via the abdomen. Samples were collected for bacterial culture and sensitivity, fungal culture and histopathological examination. The surgical site was omentalized. Long-term oral antimicrobials were administered. Results Clinical improvement was seen immediately after surgery. Complete return to previous activity level was observed 12 months after surgery. Follow-up radiographs 18 months after the procedure revealed no implant migration. Clinical Significance The gentamicin-impregnated PMMA plug in addition to the surgical debridement seemed to be an effective way for short-term distraction, potentially contributing, along with the appropriate antimicrobial therapy and analgesia, to alleviation of pain immediately after surgery and providing for a good short-term outcome, in this clinical case. The use of cement plugs as sole devices in the LS joint warrants further study.
{"title":"Surgical Treatment of Lumbosacral Discospondylitis with Gentamicin-Impregnated Polymethylmethacrylate Cement and Omentalization","authors":"M. Manou, A. Jeandel, S. Blot, P. Moissonnier","doi":"10.1055/s-0039-1683400","DOIUrl":"https://doi.org/10.1055/s-0039-1683400","url":null,"abstract":"Abstract Objective The aim of this study was to describe a novel technique using a gentamicin-impregnated polymethylmethacrylate (PMMA) plug for the surgical treatment of lumbosacral discospondylitis with concomitant instability. Clinical Report A 7-year-old male German Shepherd dog with lumbosacral (LS) discospondylitis and previously diagnosed with degenerative lumbosacral disease underwent ventral slot and distraction of the L7 to S1 intervertebral space with a gentamicin-impregnated PMMA plug. The lumbosacral joint was accessed via the abdomen. Samples were collected for bacterial culture and sensitivity, fungal culture and histopathological examination. The surgical site was omentalized. Long-term oral antimicrobials were administered. Results Clinical improvement was seen immediately after surgery. Complete return to previous activity level was observed 12 months after surgery. Follow-up radiographs 18 months after the procedure revealed no implant migration. Clinical Significance The gentamicin-impregnated PMMA plug in addition to the surgical debridement seemed to be an effective way for short-term distraction, potentially contributing, along with the appropriate antimicrobial therapy and analgesia, to alleviation of pain immediately after surgery and providing for a good short-term outcome, in this clinical case. The use of cement plugs as sole devices in the LS joint warrants further study.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123393083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Objectives The aim of this study was to describe a case of biapical tibial deformity as a result of premature distal physeal closure corrected by true spherical osteotomy, circular external skeletal fixation and distraction osteogenesis. Methods A 6-month-old male Labrador Retriever was presented for the evaluation and treatment of angular limb deformity of the left pelvic limb, with radiography and computed tomography revealing a multiplanar, biapical, compensatory tibial growth deformity, with marked distal tibial recurvatum and varus. A true spherical osteotomy was performed at the distal tibial centre of rotation of angulation (CORA), allowing for correction of the deformity in three planes, with a transverse osteotomy performed at the most proximal CORA. A circular external skeletal fixator was applied and distraction osteogenesis performed at the transverse osteotomy. Latency, distraction osteogenesis, and consolidation were performed over a 113-day period. Results At frame removal, tibial length discrepancy improved from 16.8% to 0.6% and frontal plane varus angulation improvement from 20° to 5°, when compared with the contralateral limb. Long-term evaluation revealed a satisfactory clinical and cosmetic outcome, judged by the clinician and owners, with force plate analysed symmetry index of the pelvic limb within reported normal limits. Clinical significance To our knowledge this is the first case report illustrating the value of true spherical osteotomy for the treatment of an angular limb deformity when performed in combination with distraction osteogenesis in a canine pelvic limb.
{"title":"Correction of Biapical Tibial Deformity by True Spherical Osteotomy, Modified Circular External Skeletal Fixation and Distraction Osteogenesis","authors":"D. Walmsley, N. Fitzpatrick, C. Black","doi":"10.1055/s-0039-1691781","DOIUrl":"https://doi.org/10.1055/s-0039-1691781","url":null,"abstract":"Abstract Objectives The aim of this study was to describe a case of biapical tibial deformity as a result of premature distal physeal closure corrected by true spherical osteotomy, circular external skeletal fixation and distraction osteogenesis. Methods A 6-month-old male Labrador Retriever was presented for the evaluation and treatment of angular limb deformity of the left pelvic limb, with radiography and computed tomography revealing a multiplanar, biapical, compensatory tibial growth deformity, with marked distal tibial recurvatum and varus. A true spherical osteotomy was performed at the distal tibial centre of rotation of angulation (CORA), allowing for correction of the deformity in three planes, with a transverse osteotomy performed at the most proximal CORA. A circular external skeletal fixator was applied and distraction osteogenesis performed at the transverse osteotomy. Latency, distraction osteogenesis, and consolidation were performed over a 113-day period. Results At frame removal, tibial length discrepancy improved from 16.8% to 0.6% and frontal plane varus angulation improvement from 20° to 5°, when compared with the contralateral limb. Long-term evaluation revealed a satisfactory clinical and cosmetic outcome, judged by the clinician and owners, with force plate analysed symmetry index of the pelvic limb within reported normal limits. Clinical significance To our knowledge this is the first case report illustrating the value of true spherical osteotomy for the treatment of an angular limb deformity when performed in combination with distraction osteogenesis in a canine pelvic limb.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"02 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129554243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Kawamoto, B. Minto, L. Diogo, Luis G. de Faria, A. Shimano, A. P. Macedo, JosÉ A Camassa, L. Dias
Abstract Objectives The aim of this article was to analyse and compare internal stress generated at different points of a femoral photoelastic model after insertion and axial load application using two different cementless femoral stems for total hip arthroplasty in dogs: a collared stem combined with limited textured surface and absence of grooves and a collarless stem with fully textured surface and grooves. Methods Ten femoral photoelastic models, divided into two groups, were created using two different designs of cementless femoral stems. The models were submitted to axial loading on the femoral head in a universal test machine. The internal stress (kPa) around the femoral stems was evaluated at seven predetermined points using a transmission polariscope. Results The internal stress at the femoral calcar was larger in the models with collared stem combined with limited textured surface and absence of grooves (p < 0.05). No differences were identified between the groups in the other points (p > 0.05), corresponding to the tip of the stems and proximal lateral region of the femur. Conclusions The collar of femoral stem combined with the absence of grooves and more limited textured surface increase the axial load transmission to the femoral calcar, and in vivo, it may act to reduce complications, such as subsidence and stress shielding. However, other biomechanical tests and clinical evaluations must be performed to determine other important aspects for the implantation of these prostheses.
{"title":"Photoelastic Analysis of Two Different Cementless Femoral Stems for Total Hip Arthroplasty in a Canine Model","authors":"F. Kawamoto, B. Minto, L. Diogo, Luis G. de Faria, A. Shimano, A. P. Macedo, JosÉ A Camassa, L. Dias","doi":"10.1055/s-0039-1691792","DOIUrl":"https://doi.org/10.1055/s-0039-1691792","url":null,"abstract":"Abstract Objectives The aim of this article was to analyse and compare internal stress generated at different points of a femoral photoelastic model after insertion and axial load application using two different cementless femoral stems for total hip arthroplasty in dogs: a collared stem combined with limited textured surface and absence of grooves and a collarless stem with fully textured surface and grooves. Methods Ten femoral photoelastic models, divided into two groups, were created using two different designs of cementless femoral stems. The models were submitted to axial loading on the femoral head in a universal test machine. The internal stress (kPa) around the femoral stems was evaluated at seven predetermined points using a transmission polariscope. Results The internal stress at the femoral calcar was larger in the models with collared stem combined with limited textured surface and absence of grooves (p < 0.05). No differences were identified between the groups in the other points (p > 0.05), corresponding to the tip of the stems and proximal lateral region of the femur. Conclusions The collar of femoral stem combined with the absence of grooves and more limited textured surface increase the axial load transmission to the femoral calcar, and in vivo, it may act to reduce complications, such as subsidence and stress shielding. However, other biomechanical tests and clinical evaluations must be performed to determine other important aspects for the implantation of these prostheses.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128616781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Picavet, B. Bouvy, M. Hamon, Michael Lefèbvre, M. Balligand
Abstract Objective The aim of this study was to describe the use of epiphysiodesis by the means of a screw to treat a proximal tibial Salter–Harris II fracture associated with a tibial tuberosity avulsion in a 4.5-month-old Airedale Terrier. Study design A healing proximal tibial epiphyseal fracture was observed after a 10-day period. Tibial plateau angle was 40°. The fracture was treated by the insertion of a fluoroscopy-guided 3.5-mm cancellous screw. Results Successful healing of fractures and levelling of tibia plateau were obtained. Final tibial plateau angle was 8°. At long-term follow-up (18 months), owners reported sustained and full functional recovery. Conclusion Prior to ossification of the proximal tibial physis, epiphysiodesis with a screw can be used as a treatment of sub-acute, moderately displaced, Salter–Harris I or II fractures.
{"title":"Use of Epiphysiodesis as Treatment for a Proximal Physeal Tibial Fracture in a Dog","authors":"P. Picavet, B. Bouvy, M. Hamon, Michael Lefèbvre, M. Balligand","doi":"10.1055/s-0039-1692170","DOIUrl":"https://doi.org/10.1055/s-0039-1692170","url":null,"abstract":"Abstract Objective The aim of this study was to describe the use of epiphysiodesis by the means of a screw to treat a proximal tibial Salter–Harris II fracture associated with a tibial tuberosity avulsion in a 4.5-month-old Airedale Terrier. Study design A healing proximal tibial epiphyseal fracture was observed after a 10-day period. Tibial plateau angle was 40°. The fracture was treated by the insertion of a fluoroscopy-guided 3.5-mm cancellous screw. Results Successful healing of fractures and levelling of tibia plateau were obtained. Final tibial plateau angle was 8°. At long-term follow-up (18 months), owners reported sustained and full functional recovery. Conclusion Prior to ossification of the proximal tibial physis, epiphysiodesis with a screw can be used as a treatment of sub-acute, moderately displaced, Salter–Harris I or II fractures.","PeriodicalId":443672,"journal":{"name":"VCOT Open","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134208782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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