Mehta Nabil, Burnett Robert A, Kahlenberg Cynthia A, Miller Rhiannon, Chalmers Brian, Cross Michael B
Orthopedics. 2023 Jan-Feb;46(1):e13-e19. doi: 10.3928/01477447-20220719-01. Epub 2022 Jul 25.
Mid-flexion instability (MFI) in total knee arthroplasty refers to a distinct clinical entity where the knee is stable at full extension and 90° of flexion, but unstable somewhere between these 2 points. The presentation of MFI is often vague, and studies defining objective clinical or intraoperative measurements are limited. In this review, we aim to properly define the condition, describe diagnostic criteria and risk factors contributing to MFI, review current implant design, and present outcomes of revision surgery performed for MFI. [. 2023;46(1):e13-e19.].
全膝关节置换术中的屈膝中期不稳定（MFI）指的是一种独特的临床情况，即膝关节在完全伸直和屈曲90°时稳定，但在这两点之间的某个位置不稳定。MFI的表现往往不明确，而定义客观临床或术中测量方法的研究有限。在本综述中，我们旨在正确定义这种情况，描述导致MFI的诊断标准和风险因素，回顾当前的植入物设计，并介绍针对MFI进行翻修手术的结果。[. 2023;46(1):e13-e19.]
