The Role of Preoperative Magnetic Resonance Imaging in Surgical Decision-making for Total Versus Medial Unicompartmental Knee Arthroplasty.

Journal of surgical orthopaedic advances Pub Date : 2025-01-01

Maddison A McLellan, Shane M Davis, Christopher S Lee

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Abstract

Unicompartmental knee arthroplasty (UKA) is considered favorable over total knee arthroplasty (TKA) due to quicker recovery and high postoperative function; however, UKA failure rates remain high. The purpose of this study was to investigate the role of preoperative magnetic resonance imaging (MRI) in surgical decision-making for medial UKA versus TKA. Ninety-four knees of 85 patients who underwent knee replacement surgery were analyzed retrospectively. Patients deemed candidates for UKA based on stress-view radiographs and physical exam underwent MRIs to assess candidacy. Exclusion criteria included lateral meniscus tears, loose bodies, grade 3 - 4 chondromalacia, anterior cruciate ligament (ACL) tears, sclerosis, and osteoarthritis in more than one compartment. Based on exclusion criteria in the MRI, 47.87% of patients who were initially candidates for UKA were deemed TKA-only candidates. Therefore, although MRIs pose an additional cost, high failure rate of UKA and cost of conversion to TKA make it a beneficial solution. (Journal of Surgical Orthopaedic Advances 34(1):011-014, 2025).

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术前磁共振成像在全单室膝关节置换术与内侧单室膝关节置换术手术决策中的作用。

单室膝关节置换术（UKA）被认为比全膝关节置换术（TKA）更有利，因为恢复更快，术后功能更高；然而，UKA的失败率仍然很高。本研究的目的是探讨术前磁共振成像（MRI）在内科UKA与TKA手术决策中的作用。回顾性分析85例行膝关节置换术患者的94个膝关节。根据应力观x线片和体格检查，患者被认为是UKA的候选人，并进行核磁共振检查以评估候选人资格。排除标准包括外侧半月板撕裂、松脱体、3 - 4级软骨软化、前交叉韧带（ACL）撕裂、硬化症和不止一个骨室的骨关节炎。根据MRI的排除标准，47.87%最初为UKA候选的患者被认为仅为tka候选。因此，尽管mri带来了额外的成本，但UKA的高故障率和转换为TKA的成本使其成为一种有益的解决方案。[j] .外科骨科进展，34(1):011-014,2025。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of surgical orthopaedic advances

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