Total knee arthroplasty surgery is an increasingly common procedure for the treatment of uni- and tricompartmental knee osteoarthritis, particularly in advanced stages and in the older population. Its usage is being extended to younger patients, where implant longevity is of concern. In the younger age group, especially with early disease, other options merit consideration. On the other hand, it may not be possible for elderly patients with medical comorbidities to undergo joint replacement surgery. Proximal fibular osteotomy (PFO) has recently been advocated to treat medial knee osteoarthritis. Although there have been clinical reports showing promising outcomes, the biomechanical basis of this procedure is still unclear. We performed a cadaveric study to investigate the effect of PFO on proximal tibial strain. Eight unpaired cadaveric lower limb specimens were loaded in compression at 2 times body weight. Strain gauges were mounted on various sites on the proximal tibia and fibula. After PFO, there was a significant increase in the lateral tibial strain adjacent to the proximal tibiofibular joint (P<.05). There was moderate effect size reduction in the anteromedial tibial strain as well as moderate effect size increase in the posterior tibial strain. The strain reduction seen at the anteromedial tibia can offer a possible explanation for symptomatic relief after PFO. However, the increase in the lateral and posterior tibial strain raises concern about long-term accelerated wear in these regions. [Orthopedics. 20XX;XX(X):xx–xx.]

全膝关节置换术是治疗单室和三室膝关节骨关节炎的一种越来越普遍的手术，特别是在晚期和老年人群中。它的使用范围正在扩展到年轻患者，他们担心植入物的寿命。在较年轻的年龄组中，尤其是早期疾病，其他选择值得考虑。另一方面，患有合并症的老年患者可能无法接受关节置换手术。近端腓骨截骨术（PFO）最近被提倡用于治疗膝关节内侧骨关节炎。尽管有临床报告显示有希望的结果，但该程序的生物力学基础仍不清楚。我们进行了一项尸体研究，以研究 PFO 对胫骨近端拉伤的影响。八个未配对的尸体下肢标本以 2 倍体重的压力加载。应变仪安装在胫骨和腓骨近端的不同部位。PFO 后，近端胫腓关节附近的胫骨外侧应变显着增加（P <.05)。胫骨前内侧应变的影响大小适度减小，胫骨后应变的影响大小适度增加。在胫骨前内侧看到的应变减少可以为 PFO 后症状缓解提供可能的解释。然而，胫骨外侧和后部应变的增加引起了人们对这些区域长期加速磨损的担忧。[骨科。20XX;XX(X):xx–xx.]