Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Sep 2021
Evaluation of the accuracy of resected bone thickness based on patient-specific instrumentation during total knee arthroplasty.
In total knee arthroplasty (TKA) using patient-specific instrumentation (PSI), the correlation between the preoperative surgical plan and intraoperative resection size is unclear. The aims of this study were to evaluate whether the computed tomography (CT)-based PSI surgical plan can be executed accurately and to determine the accuracy of bone resection in TKA using PSI. ⋯ PSI showed only fair-to-moderate accuracy. The cutting guide for the posterior femur was less accurate than that for the tibia and distal femur. Specific attention is required when cutting the posterior femur. The PSI design needs to be improved to reduce errors.
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Arch Orthop Trauma Surg · Sep 2021
Quantitative and individualized assessment of the learning curve in preoperative planning of the acetabular cup size in primary total hip arthroplasty.
The aim of the present study was to investigate the learning curves of 2 trainees with different experience levels to reach proficiency in preoperative planning of the cup size based on learning curve cumulative summation (LC-CUSUM) statistics and a cumulative summation (CUSUM) test. ⋯ LC-CUSUM/CUSUM allow for an individualized, quantitative and continuous assessment of planning quality. Based on LC-CUSUM statistics, the two trainees of this study gain proficiency in planning of the acetabular cup size after 50-100 attempts when an immediate feedback is provided. Previous experience positively influences the performance. The study serves as basis for the medical education of students and residents in joint replacement procedures.
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Arch Orthop Trauma Surg · Sep 2021
Review Meta Analysis Comparative StudyComparison between intra-articular infiltrations of placebo, steroids, hyaluronic and PRP for knee osteoarthritis: a Bayesian network meta-analysis.
Regarding the efficacy of intra-articular injections of platelet-rich plasma, hyaluronic acid and corticosteroids, current evidence is controversial. The superiority of one technique over another is questioned and debates are ongoing. The purpose of the present study was to compare and investigate the efficacy of these intra-articular infiltrations in patients with knee osteoarthritis (OA). A Bayesian network meta-analysis of randomized clinical trials (RCTs) was conducted comparing patient outcomes at 3, 6 and 12-months of follow-up. ⋯ I, Bayesian network meta-analysis of RCTs.