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Hereterotopic bone formation Periarticular ossification is common after severe soft-tissue injury and extended surgical dissections. In cases where this is anticipated, prophylactic indomethacin is useful. Avascular necrosis Osteonecrosis of the femoral head may occur even if the hip is not fully dislocated. The condition is probably overdiagnosed because of erroneous interpretation of the x-ray appearances following impacted marginal fractures of the acetabulum (Gruen, Mears and Tauxe, 1988). Loss of joint movement and secondary osteoarthritis Displaced fractures involving the weightbearing portion of the joint may result in loss of movement and early onset osteoarthritis. If a joint replacement operation is contemplated it should be deferred until the fractures have consolidated; the acetabular implant is bound to work loose if there is any movement of the innominate segments. ---from 《Apley’s System of Orthopaedics and Fractures》 重点词汇整理： Hereterotopic bone formation 异位骨化 Periarticular关节周围的 Avascular necrosis 缺血性坏死 erroneous interpretation of the x-ray appearances对x光表现的错误解释 marginal /ˈmɑːrdʒɪnl/adj. 微不足道的，不重要的；边缘的；临界的；末端的 early onset osteoarthritis早发性骨关节炎 onset /ˈɑːnset/n. 开始，着手；发作；攻击，进攻 If a joint replacement operation is contemplated it should be deferred until the fractures have consolidated。如果考虑进行关节置换手术，则应推迟到骨折已巩固（愈合）; contemplate /ˈkɑːntəmpleɪt/vt. 沉思；注视；思忖；预期vi. 冥思苦想；深思熟虑 is bound to work loose必然会松动 innominate/ɪˈnɑːmənɪt/adj. 无名的；匿名的 百度翻译： 异位骨形成 关节周围骨化在严重的软组织损伤和广泛的外科解剖后很常见。在这种情况下，预防性消炎痛是有用的。 缺血性坏死 即使髋关节没有完全脱位，股骨头也可能发生坏死。由于对髋臼撞击边缘骨折的x线表现的错误解释，这种情况可能被过度诊断（Gruen，Mears and Tauxe，1988）。 关节活动丧失和继发性骨关节炎 涉及关节负重部分的错位骨折可能导致运动能力丧失和早发性骨关节炎。如果打算进行关节置换手术，则应推迟至骨折愈合；如果髋臼节段有任何移动，髋臼植入物必然会松动。 |
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