Journal of Orthopaedic Surgery最新文献

Purpose: This study aimed to evaluate the effect of distal blocking screws on the stability and healing of ulnar diaphyseal fractures treated with intramedullary (IM) nails. The primary research question was whether the addition of distal blocking screws enhanced fracture stabilization and promoted faster healing than the standard IM nailing techniques.

Methods: This retrospective study reviewed medical records of 30 patients with ulnar diaphyseal fractures treated from February 2018 to September 2023. The patients were divided into two groups: those treated using IM nails alone (n = 17) and those treated with using IM nails with distal blocking screws (n = 13). The surgical time, medullary canal space, fracture healing time, and complications were assessed. Functional outcomes were evaluated using the Grace and Eversmann rating system, the DASH scores, and the VAS scores.

Results: The addition of distal blocking screws resulted in a slightly longer surgical time (56 min vs 47 min). However, the group with distal blocking screws had smaller medullary canal space and showed significantly faster fracture healing times (2.3 months vs 3.9 months; p = .036). There were no reported complications of nonunion, nerve injury, or infection in the distal blocking screw group, whereas the IM nail-only group had one case of nonunion (5.7%).

Conclusion: The use of distal blocking screws in conjunction with IM nails for ulnar diaphyseal fractures improves fracture stability and promotes faster healing.

Purpose: To examine the effects of tourniquet use in arthroscopic anterior cruciate ligament reconstruction in terms of (1) intraoperative visualization, (2) surgical time, (3) consumption of sterile saline, and (4) postoperative pain.

Methods: In this prospective randomized clinical trial, patients were assigned to Tourniquet Group or No Tourniquet treatment groups. The primary outcomes were intraoperative visualization, with scores ranging from 0 to 10 (0 = no visibility; 10 = clear and perfect display), surgical time, and the consumption of sterile saline. The secondary aim was to measure postoperative pain (24 h after surgery) with the visual analog scale (VAS) for pain.

Results: A total of 71 patients were included in the No Tourniquet group, and 75 were included in the Tourniquet group, with mean ages of 26.73 ± 8.05 years and 26.95 ± 10.11 years, respectively (p = .88). In the No Tourniquet group, 37 concomitant meniscal lesions were treated, whereas in the Tourniquet group, 38 (p = .99) were treated. The mean surgical times were 51.07 ± 6.90 and 50.03 ± 7.62 (p = .325), respectively, while the mean amount of saline consumed was 6.17 ± 1.18 L versus 5.89 ± 1.23 L (p = .217). Both groups achieved optimal visualization, with a sum of all surgical steps of 65.49 ± 1.86 for the no tourniquet group and 65.39 ± 1.88 for the Tourniquet group (p = .732). Postoperative pain was significantly lower in the No Tourniquet group (VAS score: 2.82 ± 1.33 vs 5.80 ± 1.22).

Conclusions: Tourniquet use during ACL reconstruction does not improve intraoperative visualization and does not reduce surgical time but leads to greater postoperative pain with a risk of well-known tourniquet-related complications.

Level of evidence: Level I - Randomized clinical trial.

Introduction: There have been osteotomy methods that corrected or overcorrected the ulna deformity as part of surgical treatment for chronic radial head dislocation.

Methodology: We reported surgical technique and outcome of oblique sliding ulna osteotomy that created acute lengthening, deformity correction or both to assist open reduction of radiocapitellar joint in four patients with neglected Monteggia fracture dislocation.

Result: Patients aged 3-12 years old had trauma duration of 4 weeks to 3 years. Two patients had Bado type I injury, and the other two had Bado type III. There was no acute nerve injury. During the final follow-up, all patients achieved union, with the limitation of motion range in the rotation arch being less than 20°. The radial head had no recurrent dislocation.

Conclusion: This case series has shown sliding osteotomy safely, providing acute correction and lengthening of the ulna without requiring bone graft to facilitate stable reduction of the neglected Monteggia lesion.

Total knee arthroplasty (TKA) is an effective treatment for end-stage knee joint diseases. The debate over preserving or sacrificing the posterior cruciate ligament (PCL) in mobile-bearing TKA (MB TKA) still needs to be solved due to the lack of high-quality evidence, particularly meta-analyses comparing these techniques. This study aims to conduct a meta-analysis to compare the outcomes of PCL retention (CR) and PCL sacrifice (PS) in terms of clinical and functional knee scores, range of motion, complication rates, and revision rates and to validate these findings through animal experiments. A comprehensive search was conducted using MEDLINE, Cochrane, and Embase databases. Relevant studies were selected for the meta-analysis using RevMan 5.3. Additionally, an animal experiment using Sprague-Dawley rats simulated MB TKA to compare the effects of PCL retention and sacrifice surgeries. 12 studies were included in the meta-analysis. No significant differences were found between CR and PS techniques regarding HSS, KSS, KSFS, WOMAC, ROM, and medial/lateral instability. However, CR MB showed slight superiority in NKJS, while PS MB had better outcomes in complication and revision rates. In the animal study, CR rats exhibited significant early postoperative inflammation, but both groups' knee structures gradually normalized. The meta-analysis indicates that PCL retention (CR MB) and sacrifice (PS MB) have similar effects on various clinical and functional knee scores. However, PS MB is significantly better at reducing complications and revision rates. The animal experiment confirms PS MB's advantages in reducing inflammation and promoting joint recovery. Despite the strong evidence, long-term follow-up and larger-scale randomized controlled trials are necessary to confirm these findings.

Background: The uric acid-to-high-density lipoprotein cholesterol ratio (UHR) has emerged as a novel indicator of inflammatory and metabolic status. This study aims to examine the association between UHR and bone mineral density (BMD), as well as the risk of osteoporosis, in individuals aged ≥50 years. Methods: This cross-sectional study used data from the National Health and Nutrition Examination Survey, focusing on participants aged ≥50 years. Femoral neck BMD (FN-BMD) was measured using dual-energy X-ray absorptiometry. Linear regression models were employed to examine the association between UHR and FN-BMD. Additionally, generalised additive models were used to assess the nonlinear relationship between UHR and FN-BMD. Logistic regression models were employed to evaluate the association between UHR and the risk of osteoporosis. Results: Finally, the study included 2963 adults with a mean age of 64.16 ± 8.92 years. Linear regression analyses revealed a positive association between UHR and FN-BMD, regardless of covariate adjustments. Logistic regression analyses indicated that elevated UHR was associated with a reduced risk of osteoporosis with or without covariate adjustments. Subgroup analyses revealed that the positive association between UHR and BMD was significant in individuals aged ≥65 years but not in those aged 50 to 64 years. Interaction analyses by age showed significant differences after adjusting for all covariates. Conclusions: Clinicians should be vigilant regarding the potential risk of osteoporosis in individuals with a low UHR. UHR might serve as a risk indicator for osteoporosis.

Background: Innovation has in common the promise of benefit for patients; however, past experience has shown that this promise is not always delivered. Instead, low-value innovation might encourage treatment variation and dilute the available body of evidence. This study aims to investigate (1) whether the peer-review process is capable of filtering out low-value innovation appropriately, and (2) whether low-value surgical innovation would be preferred more often than nonoperative innovation by peer-reviewers in the treatment of proximal humeral fractures in the elderly.

Materials and methods: Two duplicated sham scientific abstracts, respectively introducing a low-value surgical innovation and a valuable nonsurgical innovation, were submitted to nineteen peer-reviewed scientific meetings worldwide for orthopedic trauma surgery with submission deadlines between 01/01/2022 and 31/12/2022. Decision regarding abstract acceptance was compared.

Results: There was a high acceptance rate for the abstract introducing low-value surgical innovation (12 out of 19 (63.2 %)), which was higher than that of a nonoperative duplicate (10 out of 19 (52.6 %)), but this difference was not statistically significant (p = 0.5). The majority of the ten meetings that accepted both abstracts placed both in equivalent programmatic tiers (oral presentation (4) and poster presentation (2)). In three meetings, the surgical abstract received superior program placement (oral presentation). In one case, it was the opposite.

Conclusion: There is a high acceptance rate for low-value surgical innovation among peer-reviewed scientific meetings. However, we can not conclude that low-value surgical innovation is preferred more often than nonoperative innovation by peer-reviewers as the differences in acceptance rate were small and not statistically significant. The peer-review process may be suitable as value-based medicine emerges. Scientists should be encouraged to pursue value-based innovation.

Background: Denosumab effectively treats RANKL-mediated bone disorders by inhibiting osteoclast activity. While approved for giant cell tumours, its role in aneurysmal bone cysts (ABC) remains unclear. This review explores denosumab's application in ABCs, focusing on its role, outcomes, and adverse effects. Methods: A scoping review adhering to PRISMA Extension for Scoping Reviews guidelines was conducted. The search involved five databases from inception until 31 December 2023. Results: From an initial 390 studies, 29 were selected post-screening involving 67 patients. The most common ABC sites were the spine (n = 42) and pelvis (n = 7). Denosumab served as primary treatment in 25 patients (37.3%), neoadjuvant in 11 (16.4%), second-line therapies after inadequate initial therapies in 24 (35.8%), and adjunct therapy in seven cases. All patients demonstrated favourable clinical and radiological responses post-denosumab. 10 patients (15%) experienced tumour recurrences: six after denosumab discontinuation (3-17 months post-cessation), three post-surgery following neoadjuvant denosumab, and one during ongoing treatment. Adverse effects reported were hypocalcaemia (n = 10), hypercalcemia (n = 14), and sclerotic metaphyseal bands (n = 2), all in the paediatric age group. While hypocalcaemia surfaced early in denosumab therapy, hypercalcaemia manifested 2.5-6 months post-discontinuation, mainly managed with bisphosphonates. Fewer than half of the studies had follow-ups that exceeded 2 years. Conclusion: Denosumab may be an effective therapy for ABC, especially for high-risk cases like spinal and pelvic tumours. It can also be utilized as a second-line for recurrence/failed initial intervention or as neoadjuvant therapy. Concerns exist about tumour recurrence and rebound hypercalcemia, necessitating careful monitoring, longer follow-up, and prophylactic measures. Prospective clinical trials are warranted for deeper insights.

Purpose: The primary objective of this study was to determine time to full weight-bearing after the use of a calcium-sulfate-calcium phosphate bone substitute (CaSO4/CaPO4) as a bone void filler in the treatment of primary benign bone tumours following intralesional curettage. The secondary objectives were to determine surgical complications and recurrence rates.

Methods: Retrospective review of patients identified from a surgeon-specific orthopaedic oncology database, who underwent curettage of benign bone tumours and subsequent bone void filling with CaSO4/CaPO4.

Results: A total of 39 patients (20 males, 19 females) met inclusion criteria with an average age of 31 years (range: 13 to 62 years), a median follow-up of 3.7 years, and a maximum follow-up of 11 years. The most common tumour diagnosis was giant cell tumour of bone (GCT) (n = 19), and the most common location was the proximal tibia (n = 9). The mean volume of tumour excised was 74.1 cm³ including extraosseous bone expansion due to tumour growth, with a mean of volume of 21.4 mL of CaSO4/CaPO4 used to fill the intraosseous cavitary defects to restore normal bone anatomy. None of the lesions required additional internal fixation. The primary outcome measure, average time to full weight-bearing/full range of motion, was 11 weeks and 6 weeks for upper and lower extremity lesions, respectively. Secondary outcomes included tumour recurrence requiring reoperation in five patients and infection requiring reoperation in two patients.

Conclusion: This study demonstrates that CaSO4/CaPO4 is a viable option as a bone void filler in the reconstruction of cavitary defects following removal of primary benign bone tumours. CaSO4/CaPO4 provides sufficient bone regeneration early in the post-operative period to allow progression to full weight-bearing within weeks without the need for internal fixation. There were no graft-specific complications noted.

Background: To observe the activation strategies of the ankle muscles using surface electromyography (sEMG) during single-leg standing (SLS) and both-leg standing (BLS) on flat ground (FG), soft mat (SM), and BOSU ball (BB) surfaces. Methods: Thirty healthy young adults participated in the study. The muscle activities of the tibialis anterior (TA) and gastrocnemius medial (GM) were measured on the three surfaces during SLS and BLS. Electromyographic evaluations of the TA and GM were recorded during maximum voluntary isometric contractions (MVIC). Muscle activation was evaluated using MVIC%, and muscle co-contraction was evaluated using the co-contraction index (CI). Results: A statistically significant increase was observed in the MVIC% of the TA, GM, and CI on the three surfaces during SLS compared to BLS, except for the comparison of CI on BB between SLS and BLS (t = -1.35, p = 0.19). The MVIC% of the TA and GM during SLS and BLS on BB was significantly increased in comparison with FG and SM. The CI during BLS on BB increased compared to FG (t = 3.19, p < 0.01) and SM (t = 4.64, p < 0.01). The CI during BLS on SM (t = -1.46, p = 0.15) decreased when compared to FG but without statistical significance. Conclusions: SLS and unstable surfaces can induce greater muscle activation, and SLS can have a greater influence on ankle muscles.

Purpose: This study aimed to investigate the association between weight-adjusted waist index (WWI) and trabecular bone score (TBS) and to assess the ability of WWI to identify individuals with degraded bone microarchitecture (DBMA).

Methods: This cross-sectional study included participants aged 20 and older from the National Health and Nutrition Examination Survey. Furthermore, WWI was calculated by waist circumference and body weight. In addition, linear regression models were employed to investigate the association between WWI and TBS, while logistic regression models were employed to determine the association between WWI and the risk of DBMA. Finally, the performance of WWI in identifying individuals with DBMA was using the receiver operating characteristic (ROC) curves with area under the ROC curve.

Results: A total of 4,179 participants with a mean age of 49.90 years were included in the final analysis. WWI was negatively associated with TBS and positively associated with an increased risk of DBMA. Furthermore, the associations between WWI and TBS, as well as DBMA risk, were stable regardless of stratification by age, sex, race, or body mass index (BMI). Moreover, WWI achieved good performances in identifying individuals with DBMA or low TBS. In addition, the combination of WWI and BMI showed better performances in identifying individuals with DBMA or low TBS than WWI or BMI alone.

Conclusion: WWI established a negative association with TBS and a positive association with the risk of DBMA. Clinicians should be alert to the potential risk of DBMA among individuals with high WWI. Moreover, WWI, alone or in combination with BMI, has the potential to serve as an early screening strategy in identifying individuals with DBMA.