Fontanesi G, Rotini R, Pignedoli P, Giancecchi F
I Divisione Ortopedia e Traumatologia, Istituto Ortopedico Rizzoli, Bologna.
Ital J Orthop Traumatol. 1991 Mar;17(1):65-71.
The importance of the preservation of the posterior cruciate ligament in total knee arthroplasty is analyzed from a biomechanical, clinical, and functional standpoint. Using clinical and radiographic criteria, the authors assess posterior cruciate ligament validity in a selected group of 31 of 45 total knee arthroplasties (PCA prosthesis) reviewed at least 18 months after the operation. Sixty-eight percent of the replaced knees, which were divided into two groups on the basis of preoperative deformity, had a functional posterior cruciate ligament. In view of these results the authors are satisfied with the prosthetic model they adopted, which was designed not only to preserve the posterior cruciate ligament, but also, by virtue of its special shape, to compensate in the event of ligament insufficiency.
从生物力学、临床和功能角度分析了全膝关节置换术中保留后交叉韧带的重要性。作者采用临床和影像学标准，对45例全膝关节置换术（PCA假体）中31例经至少18个月随访的患者进行评估，以确定后交叉韧带的有效性。根据术前畸形情况将置换膝关节分为两组，其中68%的膝关节后交叉韧带功能良好。鉴于这些结果，作者对所采用的假体模型感到满意，该模型不仅设计用于保留后交叉韧带，而且因其特殊形状，在韧带功能不全时还能起到代偿作用。
