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Aim: There are few studies in the literature evaluating the robotic assisted unicondylar knee arthroplasty (rUKA) learning curve. This study aimed to evaluate the learning curve in robotic assisted unicondylar knee arthroplasty in terms of operation time. Materials and Methods: The data of patients who underwent rUKA between October 2016 and December 2019 were retrospectively analyzed. Age, gender, side, and body mass index (BMI) values of the patients were obtained from the patient files. To compare the operation times, the patients were divided into two groups. The first group represented patients who had surgery in the first half of the follow-up period (n=27), while the last group represented patients who had surgery in the second half of the follow-up period (n=28). Results: During the study period, rUKA was performed on 55 patients (42 females, 13 males) with a mean age of 64.1 years. The demographic data of the two groups were similar. The mean operative times of the first (n=27) and the last groups (n=28) were 101.816.1 minutes, and 84.89.9 minutes, respectively (p <0.001). Conclusion: The mean duration of operation was significantly shorter in the last group who underwent rUKA, compared to the first group. Our findings showed that there is a significant learning curve in rUKA surgery in terms of operation time. [ABSTRACT FROM AUTHOR]

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Introduction: This study aimed to evaluate the accuracy of the suture technique, along with the utilization of a spirit-level device which is an instrument designed to indicate whether a surface is horizontal or vertical, in comparison to the conventional supraacetabular pin method and caliper measurement for correcting leg length discrepancy (LLD) during total hip arthroplasty (THA). Materials and methods: Consecutive patients who underwent unilateral primary THA between January 2021 and March 2023 were included in the study. The exclusion criteria were severe flexion and adduction contracture that could affect the accuracy of measurements, a history of lower extremity surgery, the presence of lower extremity deformity, and the absence of postoperative full-length radiographs. Patients were allocated into two groups based on the technique employed for correcting LLD during THA. Group 1 (n=62) consisted of patients evaluated using the suture technique with a spirit-level device, while group 2 (n=75) comprised patients who underwent the supraacetabular pin method with caliper measurement. The distance between the inter-teardrop line and the tip of the lesser trochanter was measured for both hips to assess LLD., Results: The mean preoperative LLD was similar between groups, which was 11.6 ± 9.1 mm in group 1 and 9.5 ± 9.8 mm in group 2 (p=0.191). Postoperatively, group 1 had a significantly lower LLD compared to group 2 (p<0.001)., Conclusion: According to the results obtained from this study, the use of a suture technique in conjunction with a spirit-level device to achieve a consistent leg position is an effective method for correcting LLD during THA., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2024, Kezer et al.)

Background: The aim of this study is to compare open double-button (DB) and hook plate (HP) techniques in the treatment of acromioclavicular joint dislocation (ACJD) in terms of clinical and radiological outcomes and to determine which method is superior., Methods: This retrospective comparative study included patients with ACJDs (Rockwood Type III/V) who were treated with one of these implants (22 patients with HP, 21 patients with DB) between June 2014 and February 2018., Results: A total of 43 patients (39 men and 4 women) with a mean age of 41.8±17.4 years have participated in this study. The mean follow-up time was 20.6±7.5 months. Mean times of fluoroscopy, operation, and return to work were shorter in the DB group. Compli-cation rates were 23.8% and 54.6%, reoperation rates (including mandatory implant removals [IR]) were 4.8% and 77.3%, mean constant scores were 92.1±3.4 and 88.3±4.2, and mean Visual Analog Scale scores were 0.8±1.0 and 1.5±1.0 for the DB and HP groups, respec-tively. IR was the main reason for reoperations in the HP group, whereas the DB group's only reoperation was caused by a coracoid cutout (due to coracoid tunnel malposition) leading to redislocation. AC joint arthritis (36.4%) and subacromial osteolysis (31.9%) were com-monly encountered in the HP group. The most frequent complication of the DB group was malreduction (initial undercorrection) (9.6%)., Conclusion: DB was superior to HP in functional outcome, post-operative pain, complication and reoperation rates, operation and fluoroscopy times, and time to return to work. Besides, reoperation (for IR) was needed in most of the HP patients. Therefore, the open DB technique should be preferential to the HP procedure.