The outcome of immediate arthroscopic repair of primary anterior shoulder dislocation is superior and encouraging with significant reduction in failure and revision rates compared to conservative treatment. Nevertheless, the failure and revision rates are statistically insignificant compared to arthroscopic reconstruction of recurrent dislocation. Hence, there is evidence to support immediate arthroscopic repair option for primary anterior shoulder dislocations over conservative treatment in young active patients, in order to reduce the risk of failure and revision rates. However, the evidence is inconclusive compared to arthroscopic reconstruction of recurrent dislocation.

HighlightsHypertrophic malunion of anterior inferior iliac spine causing impingement.Failed conservative management.Surgical excision of hypertrophic fragment have been done to relieve the symptom.First case in Qatar.

Objective To compare tenotomy versus tenodesis for the treatment of long head of the biceps tendon pathologies. The primary outcome was the shoulder functional outcome. The secondary outcomes consisted of postoperative pain, elbow flexion and forearm supination strengths and postoperative complications. Methods PubMed, MEDLINE, Google Scholar and Web of Science were searched until April 2020. Included studies were randomized controlled trials with a minimum 12 months’ follow-up. Results Both treatments had similar improvement on the Constant–Murley score at 6 months and 12 months. However, tenotomy had a significantly lower Constant–Murley score at two years with a mean difference of −1.13 (95% confidence interval −1.9, −0.35). Furthermore, tenotomy had a risk ratio of 2.46 (95% confidence interval 1.66, 3.64) for developing Popeye’s deformity. No significant difference was detected in other functional outcomes, pain, or elbow flexion and forearm strength indices. Discussion Tenodesis and tenotomy are both well-established techniques that similarly yield satisfactory outcomes. Despite that tenodesis had a statistically significant better Constant–Murley score at two years, this was clinically irrelevant. With the current evidence, we recommend either technique for the management of the long head of the biceps tendon pathologies. Level of evidence Therapeutic, Level II

Purpose To meet the increasing demands of total shoulder arthroplasty (TSA) while reducing its financial burden, there has been a shift toward outpatient surgery. This systematic review and meta-analysis aimed to evaluate the safety of outpatient TSA. Methods The primary objective was to compare re-admission rates and postoperative complications in outpatient versus inpatient TSA. The secondary objectives were functional outcomes and costs. PubMed, Google Scholar, and Web of Science were searched until March 28, 2020. The inclusion criteria were studies reporting at least complications or readmission rates within a period of 30 days or more. Results Ten level III retrospective studies were included with 7637 (3.8%) and 192,025 (96.2%) patients underwent outpatient and inpatient TSA, respectively. Outpatient TSA had relatively younger and healthier patients. There were no differences between outpatient and inpatient arthroplasty for 30- and 90-day readmissions. Furthermore, unadjusted comparisons demonstrated significantly less total and major surgical complications, less total, major, and minor medical complications in favour of outpatient TSA. However, subgroup analyses demonstrated that there were no significant differences in all complication if the studies had matched controls and regardless of data source (database or nondatabase studies). The revision rates were similar between both groups at a 12–24 months follow-up. Two studies reported a significant reduction in costs in favour of outpatient TSA. Conclusion This study highlights that outpatient TSA could be a safe and effective alternative to inpatient TSA in appropriately selected patients. It was evident that outpatient TSA does not lead to increased readmissions, complications, or revision rates. A potential additional benefit of outpatient TSA was cost reduction.

Objective The purpose of this study was to perform a meta-analysis comparing mobile-bearing with fixed-bearing total knee arthroplasty (TKA) in terms of all-cause revision rates, aspetic loosening, knee functional scores, range of motion and radiographic lucent lines and osteolysis. Methods PubMed, Cochrane Library, Google Scholar and Web of Science were searched up to January 2020. Randomized controlled trials that compared primary mobile-bearing with fixed-bearing TKA, reporting at least one of the outcomes of interest, at a minimum follow-up of 12 months were included. All outcomes of interest were pooled at short-term (< 5 years), mid-term (5 to 9 years) and long-term (> = 10 years) follow-up intervals. Results A total of 70 eligible articles were included in the qualitative and statistical analyses. There was no difference between mobile-bearing or fixed-bearing TKA at short-term, mid-term and long-term follow-ups in all outcome measures including all-cause revision rate, aseptic loosening, oxford knee score, knee society score, Hospital for Special Surgery score, maximum knee flexion, radiographic lucent lines and radiographic osteolysis. Conclusion The current level of evidence demonstrated that both mobile-bearing and fixed-bearing designs achieved excellent outcomes, yet it does not prove the theoretical advantages of the mobile-bearing insert over its fixed-bearing counterpart. The use of either design could therefore be supported based on the outcomes assessed in this study. Level of Evidence: Level II, Therapeutic

INTRODUCTIONXanthoma (or xanthofibroma) is a benign proliferative lesion, mostly seen in soft tissue. Xanthoma of bone is very rare benign primary bone tumor, more frequently seen in men and in patients over 20 years of age. Histologically, it is characterized by mononuclear macrophage-like cells, abundant foam cells, and multinucleated giant cells. It is sometimes discovered coincidentally and the most frequent symptom is pain.PRESENTATION OF CASEWe present a 50-year-old healthy male patient with primary xanthoma of the calcaneus, who was treated by curettage and bone cement. He presented with a pathological fracture in a calcaneus bone lesion. Giant cell tumor was suspected on X-ray and MRI. Curettage and bone cementing was done through the posterolateral approach. Lipid profile was normal and histological examination revealed findings consistent with primary xanthoma of calcaneus bone.DISCUSSIONTo avoid an erroneous diagnosis, all material should be examined microscopically, the radiological features of the lesion should be studied properly and lipid profile should be investigated to differentiate between primary and secondary xanthoma. Primary xanthoma may be treated with curettage and bone graft while secondary xanthoma is treated nonsurgically and the skeletal manifestations will disappear with systemic treatment of hyperlipidemia.CONCLUSIONWe present this case to raise the suspicion of this lesion that is rarely described in the literatures. This is the first case of primary xanthoma of calcaneus bone that has been reported in Qatar.

Many geometrical angles are measured directly on bone radiographs and are difficult to recall, we wanted to explore an automatic method of measurement. Edge detection was needed to determine bone edges and use them for calculation. There is no consensus on which is the best one for use in skeletal radiographs. We decided to compare commonly used edge detection methods qualitatively and quantitatively for measuring the carrying angle of the elbow using a framework we developed in PHP: Hypertext Preprocessor. Five-Hundred patients' elbow radiographs were collected. They were run through the measurement algorithm using the following edge detection methods: Sobel, Scharr, Prewitt, Frei-Chen, Kirsch, Robinson, Difference of Gaussians (DoG), Laplacian of Gaussian (LoG), Canny, Hough. Five observers manually measured the carrying angle. Results were compared using Intraclass Correlation Coefficient (ICC), Regression Analysis and Validity calculation. The Robinson algorithm was best in the qualitative analysis. Observer ICC was 0.643 which showed a strong agreement. Quantitative analysis revealed that, developing bone caused a significant bias compared to mature bone and DoG algorithm was the best due to low bias, high validity and low processing time. Automated radiographic measurement of the carrying angle of the elbow is a feasible and reliable process.

Purpose The purpose of this meta-analysis was to compare the diagnostic parameters of synovial next-generation sequencing (NGS) and cultures in diagnosing periprosthetic joint infections (PJI). Methods PubMed, Web of Science, Cochrane, and Google Scholar were searched from inception until 8 Jan 2022 for literature investigating the role of NGS in comparison to culture in the diagnosis of PJI. The studies were included if they investigated the diagnostic value of culture and NGS in diagnosing PJIs against the Musculoskeletal Infection Society (MSIS) criteria. Diagnostic parameters, such as sensitivity, specificity, positive predictive value, negative predictive value, positive-likelihood ratio, negative-likelihood ratio, accuracy, and area under the curve (AUC), were calculated for the included studies to evaluate the performance of NGS in comparison to culture in PJI diagnosis. Results The total number of the included patients was 341 from seven articles. The pooled sensitivity, specificity, and diagnostic odds ratio of NGS were 94% (95% CI 91–97%), 89% (95% CI 82–95%), and 138.5 (95% CI 49.1–390.5), respectively. NGS has positive- and negative-likelihood ratios of 7.9 (95% CI 3.99–15.6) and 0.1 (95% CI 0.0–0.1), respectively. On the other hand, the pooled sensitivity, specificity, and diagnostic odds ratio of culture were 70% (95% CI 61–79%), 94% (95% CI 88–98%), and 28.0 (95% CI 12.6–62.2), respectively. The SROC curve for NGS showed that the accuracy (AUC) was 91.9%, and that the positive and negative predictive values were 8.6 (95% CI 5.0–19.5) and 0.1 (95% CI 0.0–0.1), respectively. While, culture SROC curve demonstrated that the accuracy (AUC) was 80.5% and the positive- and negative-likelihood ratio were 12.1 (95% CI 4.5–49.6) and 0.3 (95% CI 0.2–0.4). Conclusions NGS has a potential role in diagnosing hip and knee PJIs due to its high sensitivity, specificity, and accuracy. However, the sensitivity and specificity reported by the studies varied according to the time of synovial sampling (preoperative, postoperative, or mixed).