Bindelglass D F, Dorr L D
Orthopedic Specialty Group, Fairfield, Connecticut 06430, USA.
J Arthroplasty. 1998 Dec;13(8):939-44. doi: 10.1016/s0883-5403(98)90203-0.
Despite the excellent success of earlier total knee replacement designs such as the Total Condylar Knee (Johnson & Johnson, Raynham, MA), which had a symmetrical femoral component, the majority of modern designs feature a more anatomic and asymmetric femoral prosthesis. A raised lateral phalange, an angled trochlear groove, or both are thought to improve patellar tracking. Laboratory studies, however, suggest that surgical technique may be the dominant factor in determining patellofemoral kinematics. Component design has not been proven to be significant. A prosthesis with asymmetric femoral components may cost more. The literature reviewed in this article finds no advantage to the use of asymmetric versus symmetrical femoral components in total knee replacement.
尽管早期全膝关节置换设计（如全髁膝关节，强生公司，马萨诸塞州雷纳姆）取得了巨大成功，其股骨部件是对称的，但大多数现代设计的特点是采用更符合解剖结构且不对称的股骨假体。外侧凸缘升高、滑车沟成角或两者兼而有之被认为可改善髌骨轨迹。然而，实验室研究表明，手术技术可能是决定髌股关节运动学的主要因素。部件设计尚未被证明具有重要意义。具有不对称股骨部件的假体可能成本更高。本文所综述的文献发现，在全膝关节置换中，使用不对称股骨部件与对称股骨部件相比并无优势。
