Medial Compartment Knee Osteoarthritis Altered Tibiofemoral Joint Kinematics and Contact Pattern During Daily Weight‐Bearing Extension

• DOI: 10.1111/os.70023
• Publication Date: 2025-03-18T11:33:45Z
• Authors: Zheng Jiang; Axiang He; Nan Zheng; Yanjie Mao; Weiming Lin; Xiaoyin Zhang; Han Guo; Yuyan Liu; Tsung‐Yuan Tsai; Wanjun Liu
• Keywords: Medial meniscus; Weight-bearing; Cadaveric spasm; Stair climbing

ABSTRACT Objective With the advancement of digital orthopedics, growing prevalence medial compartment knee osteoarthritis (MCKOA) and widespread adoption knee‐preserving surgical techniques have heightened new interest in predicting onset MCKOA promoting outcomes. This study was to clarify differences kinematics contact patterns between its native sides during extension. Methods From March 2023 June 2024, thirty‐two patients who suffered from unilateral MCKOA, with their contralateral extremities asymptomatic intact, were enrolled this descriptive research. Three‐dimensional models created computed tomography scans, all performed continuous stair climbing under surveillance a dual fluoroscopic imaging system (DFIS) determine accurate 6‐degrees‐of‐freedom (6‐DOF) OA knees knees. The volume penetration centers tibial femoral cartilage defined as centers. All measured parameters tested for significant using Wilcoxon Rank‐Sum test. Results Compared knees, tibia showed increased flexion (mean 3.6°) varus rotation 1.6°), more posterior 1.4 mm), lateral 1.2 mm) proximal translations 0.5 relative femur extension ( p < 0.05). tibiofemoral on plateau both shifted medially mm 1.3 mm, respectively, 0.05) than side, which consistent observed 6‐DOF. Conclusion Our findings offer valuable insights into vivo knee, joint (TFJ) pattern. In exhibited rotation, along posterior, lateral, translation compared side These changes aligned shifts side. provide data support diagnosis treatment MCKOA.