Paprosky Wayne G, Sporer Scott S, Murphy Brian P
Department of Orthopaedic Surgery, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois.
J Arthroplasty. 2007 Jun;22(4 Suppl 1):111-5. doi: 10.1016/j.arth.2007.01.018.
Managing severe acetabular bone loss in total hip arthroplasty revision can be a tremendous challenge. Osteolysis and migration of the acetabular component can lead to large uncontained defects. Traditionally, these deficiencies have been treated with allograft with or without the support of a cage. In severe cases, a majority of the cage support is via allograft instead of host bone. Sometimes, with remodeling and resorption of the allograft, the cage can lose structural support, leading to fatigue and failure. In these situations, trabecular metal has become a viable alternative. Deficiencies of acetabular bone can be independently addressed and reconstructed providing initial stability and, we believe, long-term biologic fixation to host bone.
在全髋关节置换翻修术中处理严重的髋臼骨缺损可能是一项巨大的挑战。髋臼部件的骨溶解和移位可导致大的无支撑缺损。传统上，这些缺损采用同种异体骨治疗，有无金属笼的支撑均可。在严重病例中，金属笼的大部分支撑是通过同种异体骨而非宿主骨。有时，随着同种异体骨的重塑和吸收，金属笼可能会失去结构支撑，导致疲劳和失效。在这些情况下，小梁金属已成为一种可行的替代方案。髋臼骨缺损可单独处理和重建，提供初始稳定性，我们相信还能实现与宿主骨的长期生物固定。
