Heywood A W
J Bone Joint Surg Br. 1980 Aug;62(3):332-6. doi: 10.1302/0301-620X.62B3.7410465.
A high percentage of hips in patients with rheumatoid arthritis presenting for total joint replacement have protrusio deformity with extremely thin medial acetabular walls. Biomechanical principles suggest that, to prevent inward migration of the acetabular component, the prosthesis should be positioned laterally near the acetabular rim. To reinforce the medial wall, the femoral head is fashioned into a solid graft which is anchored against the medial wall as a plug, minimising the amount of cement used and making the use of wire mesh and restraining rings about the acetabulum unnecessary. A series of nine operations on seven patients is presented. Serial radiographs, tomograms and scintigrams taken after operation suggest satisfactory incorporation of the grafts, and no complications have been encountered in a follow-up period ranging from three months to two years.
因类风湿性关节炎前来接受全关节置换的患者中，很大比例的髋关节存在髋臼内陷畸形，髋臼内侧壁极薄。生物力学原理表明，为防止髋臼假体向内移位，假体应放置在髋臼边缘附近的外侧。为加固内侧壁，将股骨头制成实心移植物，作为塞子固定在内侧壁上，从而减少骨水泥用量，无需在髋臼周围使用金属丝网和约束环。本文介绍了对7例患者进行的9次手术。术后拍摄的系列X光片、断层扫描和闪烁扫描显示移植物融合情况良好，在3个月至2年的随访期内未出现并发症。
