Kummer F J
Department of Bioengineering, Hospital for Joint Diseases Orthopaedic Institute, New York, NY 10o03.
Bull Hosp Jt Dis Orthop Inst. 1990 Spring;50(1):70-6.
The bipolar prosthesis was developed to overcome some of the shortcomings of the unipolar fixed-head prosthesis. An additional site of motion would be expected to decrease the amount of loosening, dislocation, and head migration. Although clinical series have shown success rates for bipolar prostheses as good as those for unipolar prostheses, the intended advantages have not been clearly demonstrated.
双极假体的研发是为了克服单极固定头假体的一些缺点。预期增加一个活动部位会减少松动、脱位和股骨头移位的发生。尽管临床系列研究表明双极假体的成功率与单极假体相当，但其预期优势尚未得到明确证实。
