Department of Radiology, University of Washington, UWMC-Roosevelt Radiology, Seattle, WA 98105, USA.
AJR Am J Roentgenol. 2012 Sep;199(3):570-80. doi: 10.2214/AJR.12.8844.
This article reviews the imaging features of revisions and complications of hip replacement arthroplasty and relates these features to the current understanding about how and why these failures occur.
Short-term failures of hip replacements are most commonly the result of instability and dislocation. Complications ranging from osteolysis caused by granulomatous reaction to particulate wear debris lead to many long-term failures. Attempts to reduce wear debris through changes in design and materials have reduced the rate of some complications but have resulted in new ones. Infection remains a devastating complication that is difficult to resolve.
本文回顾了髋关节置换翻修术的影像学特征以及并发症，并将这些特征与目前对这些失败发生的原因和机制的认识联系起来。
髋关节置换的短期失败最常见的原因是不稳定和脱位。从由肉芽肿反应引起的骨溶解到颗粒性磨屑磨损导致的多种长期并发症。通过改变设计和材料来减少磨屑的尝试虽然降低了某些并发症的发生率，但也导致了新的并发症。感染仍然是一种破坏性的并发症，难以解决。
