Harrison M M, Cooke T D, Fisher S B, Griffin M P
Clinical Mechanics Group, Queen's University, Kingston, Ontario, Canada.
Clin Orthop Relat Res. 1994 Dec(309):56-63.
This study was based on the unexpected observation of lateral patellofemoral subluxation in the varus osteoarthritic knee. Standardized radiographs of 109 knees (65 patients with osteoarthritis) were selected randomly from the authors' database and retrospectively reviewed. Hip-knee-ankle alignment data were correlated with patellofemoral subluxation and tilt, as well as with radiographic patellofemoral grades for arthrosis. The amount and site of patellofemoral arthrosis were correlated with patellar position and limb alignment. Patellae that were located centrally in the trochlear groove had the lowest radiographic score for arthrosis. Subluxation of the patella, either medially or laterally, was correlated with increased radiographic scores. Limb alignment was not correlated with the radiographic score. A significant percentage of varus knees (28%) had unexpected lateral subluxation of the patella. This observation has not been reported previously. It may have an impact on surgical decision-making for total knee arthroplasty and osteotomy.
本研究基于对膝内翻骨关节炎患者中意外出现的髌股外侧半脱位的观察。从作者的数据库中随机选取了109个膝关节（65例骨关节炎患者）的标准化X线片，并进行回顾性分析。髋-膝-踝对线数据与髌股半脱位和倾斜以及关节病的X线髌股分级相关。髌股关节病的程度和部位与髌骨位置和肢体对线相关。位于滑车沟中央的髌骨关节病的X线评分最低。髌骨向内侧或外侧半脱位与X线评分增加相关。肢体对线与X线评分无关。相当比例的膝内翻膝关节（28%）存在意外的髌骨外侧半脱位。这一观察结果此前尚未见报道。它可能会对全膝关节置换术和截骨术的手术决策产生影响。
