Kromann-Andersen C, Sørensen T S, Hougaard K, Zdravkovic D, Frigaard E
Acta Orthop Scand. 1980 Aug;51(4):633-8. doi: 10.3109/17453678008990854.
In a consecutive series of 309 patients the degree of ectopic bone formation was assessed 3 months, 2 years, and 5 years after total hip arthroplasty. At the three follow-up examinations ectopic bone formation was found in 49 per cent, 61 per cent, and 71 per cent. In men ectopic bone formation was more common and more pronounced than in women. It was demonstrated that walking ability and range of hip movement may be reduced in the presence of ectopic bone formation. A past history of hip surgery, preoperative exostoses, and postoperative elevation of the erythrocyte sedimentation rate did not appear to influence the formation of ectopic bone. There was no correlation between the degree of ectopic bone formation in the two hips of patients who had undergone bilateral operation. In the present study it was not possible to demonstrate preoperatively which groups of patients are most liable to develop ectopic bone postoperatively.
在连续的309例患者中，评估了全髋关节置换术后3个月、2年和5年异位骨形成的程度。在三次随访检查中，异位骨形成的发生率分别为49%、61%和71%。男性异位骨形成比女性更常见且更明显。结果表明，存在异位骨形成时步行能力和髋关节活动范围可能会降低。既往髋关节手术史、术前外生骨疣以及术后红细胞沉降率升高似乎并不影响异位骨的形成。接受双侧手术的患者双髋异位骨形成程度之间没有相关性。在本研究中，术前无法证明哪些患者组术后最容易发生异位骨形成。
