Knahr K, Salzer M, Schmidt W
General Orthopaedic Department, Gersthof Orthopaedic Hospital, Vienna, Austria.
J Arthroplasty. 1990 Jun;5(2):131-41. doi: 10.1016/s0883-5403(06)80232-9.
A total of 63 uncemented PCA tibial implants were followed radiologically for a period of 4-7 years to establish whether primary fit, alignment, bone quality, age, and diagnosis have an effect on radiological results. Fifty-eight of the 63 tibial plateaus investigated (92%) showed excellent or good radiological results. In three cases the implant was rated radiologically endangered and in two cases radiologically loose. The results show that successful long-term anchorage depends principally on a primary stable fit. If implantation is inexact, poor bone quality, improper alignment, advanced age, and rheumatoid arthritis may be responsible for unsatisfactory radiological results. The authors conclude that particular importance must be attached to exact primary fixation when several unfavorable factors are encountered.
对总共63个非骨水泥型PCA胫骨植入物进行了4至7年的放射学随访，以确定初始贴合度、对线、骨质、年龄和诊断是否对放射学结果有影响。在所研究的63个胫骨平台中，有58个（92%）显示出优异或良好的放射学结果。有3例植入物在放射学上被评定为濒危，2例在放射学上松动。结果表明，长期成功固定主要取决于初始稳定贴合。如果植入不准确，骨质不佳、对线不当、年龄较大和类风湿性关节炎可能导致放射学结果不理想。作者得出结论，当遇到几个不利因素时，必须特别重视精确的初始固定。
