Eyb R, Zweymüller K
Z Orthop Ihre Grenzgeb. 1985 Nov-Dec;123(6):975-80. doi: 10.1055/s-2008-1044791.
Ectopic ossifications after 158 cementless implanted Total hip endoprostheses Type Zweymüller-Endler have been examined postoperatively within 12 months at the earliest. The rate of ossification was 39.9%. This range is higher than the mean range of cemented hip endoprostheses reported in the literature. The higher range of ossification is found in low grade ossification grade CA I. Severe ossification of grade CA III occurred only in a low percentage. The influence of various factors (as prophylaxis for thrombosis approach, duration of operation, sex, age, other diseases, complications) on the frequency of occurrence is examined. There was no significant result concerning these parameters. The main causes for ectopic ossification seem therefore to be dispositional and constitutional factors. Male patients under the age of fifty show ectopic ossification in the highest degree.
对158例植入的Zweymüller-Endler型非骨水泥全髋关节假体术后最早12个月内的异位骨化情况进行了检查。骨化率为39.9%。该范围高于文献报道的骨水泥型髋关节假体的平均范围。在低度骨化等级CA I中发现较高的骨化范围。严重的CA III级骨化仅占低比例。研究了各种因素（如预防血栓形成的方法、手术时间、性别、年龄、其他疾病、并发症）对发生频率的影响。关于这些参数没有显著结果。因此，异位骨化的主要原因似乎是体质和遗传因素。50岁以下的男性患者异位骨化程度最高。
