Seventy-four total hip arthroplasties using a cementless acetabular component without holes for supplemental screw fixation were evaluated during a follow-up period of 2–6 years. Immediate full weight-bearing walking was allowed after the operation. A comparison of anteroposterior (AP) radiographs of the pelvis taken in the early postoperative period and when the patient returned for the final follow-up revealed that there was no migration of the acetabular component. Based on the early postoperative radiographs and using the zones described by Martell et al. [J Bone Joint Surg (1993) 75-A:554–571], gaps between the acetabular component and the bone occurred at zone A2 in three hips (4.1%), at zone B1 in 12 hips (16.2%), and at zone B2 in seven hips (9.5%). The final follow-up radiographs, however, revealed only one hip to have a gap of 1.1 mm at zone B2; the majority of the gaps had disappeared. The results suggest that immediate weight-bearing walking did not result in the migration of the cementless acetabular component.
展开▼
机译：在2至6年的随访期间，评估了74例使用无孔的无骨水泥髋臼假体进行的全髋关节置换术，以进行辅助螺钉固定。手术后立即进行完全负重步行。对比术后早期和患者返回进行最终随访时骨盆的前后位（AP）X线片，发现髋臼组件没有移动。根据术后早期X光片并使用Martell等人描述的区域。 [J Bone Joint Surg（1993）75-A：554-571]，髋臼组件和骨骼之间的间隙发生在三个髋部的A2区（4.1％），十二个髋部的B1区（16.2％）和七髋（9.5％）的B2区。然而，最终的X线照片显示，只有一个髋关节在B2区的间隙为1.1毫米;大多数差距已经消失。结果表明立即负重步行不会导致非骨水泥髋臼组件的迁移。
展开▼
