Buechel F F, Pappas M J, DePalma A F
J Biomed Mater Res. 1978 Jan;12(1):89-114. doi: 10.1002/jbm.820120109.
A prosthesis based on a new concept of gleno-humeral motion has been developed and clinically tested for the past 2 years. The "floating-socket" total shoulder replacement contains a nondislocatable, dual spherical bearing system consisting of a small sphere within a larger sphere with their centers offset to provide the physiologic "floating fulcrum" for mechanically advantageous motion. This geometric configuration allows a prosthetic range of motion in excess of anatomical limits to allow soft tissue structures to limit motion rather than mechanical impingement. The device is constructed from Co--Cr--Mo alloy and RCH-1000 polyethylene such that no metal--metal contact can occur. Experimental results in a 112-lb adult male chimpanzee and six clinical cases have revealed superior fixation strength of both glenoid and humeral components, as well as functional adaptation of the prosthesis without fracture of fixturing bone or prosthetic dislocation.
一种基于盂肱关节运动新概念的假体已被研发出来，并在过去两年里进行了临床试验。“浮动承窝”全肩关节置换假体包含一个不可脱位的双球形轴承系统，该系统由一个大球体内的小球体组成，两球体中心偏移，以便为具有机械优势的运动提供生理性“浮动支点”。这种几何结构使假体的活动范围超过了解剖学极限，从而让软组织结构来限制运动，而非机械撞击。该装置由钴铬钼合金和RCH - 1000聚乙烯制成，不会发生金属与金属的接触。在一只112磅重的成年雄性黑猩猩身上进行的实验结果以及6个临床病例显示，盂肱组件均具有出色的固定强度，并且假体功能适配良好，未出现固定骨骨折或假体脱位的情况。
