Cho Sung-Do, Youm Yoon-Seok, Kim Jong-Hyun, Cho Hye-Yong, Kim Kwang-Ho
Department of Orthopedic Surgery, Arthro Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
Knee Surg Relat Res. 2016 Jun;28(2):142-6. doi: 10.5792/ksrr.2016.28.2.142. Epub 2016 Jun 1.
To investigate the patterns of medial meniscus (MM) tears in patients with varus knee osteoarthritis who underwent total knee arthroplasty and analyze the factors that could affect MM tears.
The patients (365 knees, 268 patients) were classified into three groups; group I with MM posterior horn (PH) tear only; group II with MM root tear only; and group III with MMPH plus root tear. The following factors were evaluated: age, gender, body mass index, varus deviation of the mechanical axis, medial proximal tibial angle, posterior tibial slope (PTS), and anterior cruciate ligament (ACL) integrity (normal, degeneration, and tear or absence).
MM tears were identified in all knees. The patterns of the combined MMPH tears in group III were less complex than those in group I. Varus deviation and PTS were significantly greater in group III than groups I and II. In group III, there were significantly more cases of ACL tear or absence than groups I and II. The others showed no differences among three groups.
Severe varus knee osteoarthritis was always accompanied by MM tears. Risk factors for MMPH plus root tears were severe varus deformity, great PTS, and ACL tear or absence.
研究接受全膝关节置换术的膝内翻骨关节炎患者内侧半月板（MM）撕裂的模式，并分析可能影响MM撕裂的因素。
将患者（365膝，268例）分为三组；I组仅为MM后角（PH）撕裂；II组仅为MM根部撕裂；III组为MMPH加根部撕裂。评估以下因素：年龄、性别、体重指数、机械轴内翻偏差、胫骨近端内侧角、胫骨后倾（PTS）以及前交叉韧带（ACL）完整性（正常、退变、撕裂或缺失）。
所有膝关节均发现MM撕裂。III组合并MMPH撕裂的模式比I组的要简单。III组的内翻偏差和PTS显著大于I组和II组。在III组中，ACL撕裂或缺失的病例明显多于I组和II组。其他因素在三组之间无差异。
严重膝内翻骨关节炎常伴有MM撕裂。MMPH加根部撕裂的危险因素为严重内翻畸形、较大的PTS以及ACL撕裂或缺失。
