Sonstegard D A, Kaufer H, Matthews L S
J Bone Joint Surg Am. 1977 Jul;59(5):602-16.
The spherocentric knee is a non-hinged, intrinsically stable knee-joint prosthesis which allows controlled triaxial rotation and was designed specifically for use in severely deformed or grossly unstable knees. Biomechanical evaluation of the prosthesis implanted in fresh human cadaver limbs demonstrated highly favorable motion, stability, strength, deflection, and energy absorption characterists for the spherocentric prosthesis-bone assembly as compared with control cadaver knees. After an average follow-up of 25.5 months after the first twenty-five spherocentric arthroplasties, the clinical results were highly satisfactory and suggested that the spherocentric knee may be relatively resistant to the problems of wear debris, loosening, and breakage which have plagued other intrinsically stable knee-joint prostheses.
球形中心膝关节是一种无铰链、本质稳定的膝关节假体，它允许可控的三轴旋转，专门设计用于严重畸形或极不稳定的膝关节。对植入新鲜人尸体肢体的假体进行生物力学评估表明，与对照尸体膝关节相比，球形中心假体-骨组件具有非常良好的运动、稳定性、强度、挠度和能量吸收特性。在对最初25例球形中心关节成形术进行平均25.5个月的随访后，临床结果非常令人满意，表明球形中心膝关节可能相对不易出现困扰其他本质稳定膝关节假体的磨损碎片、松动和断裂问题。
