Sneppen O, Fredensborg N, Karle A, Klaumann U
Acta Orthop Scand. 1978 Jun;49(3):291-4. doi: 10.3109/17453677809005767.
The follow-up of 50 knees treated with the modular Marmor prosthesis and 50 with the Guepar hinge joint included tangential radiography of the femoro-patellar joint. After Marmor arthroplasty lateral patellar dislocation was found in seven knees, in six causing pain. After Guepar arthroplasty lateral patellar dislocation was found in 32 knees, but pain was present in only three. There was only a questionable correlation between pre-existing valgus deformity and postoperative lateral patellar dislocation, and an external rotation deformity of the lower leg was found in only five cases after Guepar arthroplasty. Thus, neither phenomenon could explain the high incidence of lateral patellar dislocation in the Guepar series. These dislocations must be assumed to be due to the unphysiological strain on the extensor apparatus inherent in this type of prosthesis.
对50例采用模块化马尔莫尔假体治疗的膝关节和50例采用盖帕尔铰链关节治疗的膝关节进行随访，包括股骨髌骨关节的切线位X线摄影。马尔莫尔关节置换术后，7例膝关节出现髌骨外侧脱位，其中6例引起疼痛。盖帕尔关节置换术后，32例膝关节出现髌骨外侧脱位，但只有3例有疼痛。术前存在的外翻畸形与术后髌骨外侧脱位之间仅有可疑的相关性，盖帕尔关节置换术后仅5例出现小腿外旋畸形。因此，这两种现象都无法解释盖帕尔组中髌骨外侧脱位的高发生率。这些脱位必须被认为是由于这种类型的假体固有的伸肌装置的非生理性应变所致。
