Clarke H J, Jinnah R H, Lennox D
Johns Hopkins University, Baltimore, Maryland.
Clin Orthop Relat Res. 1990 Sep(258):160-7.
Since 1983, 19 patients have had bone grafting of acetabular defects in association with a porous-coated acetabular prosthesis. The defects were defined by anatomic location to assess the rates of incorporation at different sites. The average time to incorporation was 12 months, judged by trabecular continuity. Superolateral grafts showed a greater degree of rarefaction than medial grafts. Nonprogressive migration of the graft was seen in only two cases before full incorporation of the graft. Developing lucency was seen up to 2 mm at the prosthesis-graft interface but not at the graft-ilium level. Roentgenograms suggested that integration of porous acetabular prostheses into bone may improve results of reconstructive surgery of the acetabulum.
自1983年以来，19例患者在使用多孔涂层髋臼假体的同时进行了髋臼缺损的骨移植。根据解剖位置对缺损进行定义，以评估不同部位的骨融合率。根据小梁连续性判断，平均骨融合时间为12个月。髋臼上外侧的移植物比内侧的移植物稀疏程度更高。在移植物完全融合之前，仅在两例中观察到移植物的非进行性移位。在假体-移植物界面处可见高达2毫米的进行性透亮区，但在移植物-髂骨界面处未见。X线片显示，多孔髋臼假体与骨的融合可能会改善髋臼重建手术的效果。
