Wilhelm K, Conrad R, Reich H, Zieger H, Schild H
Radiologische Universitätsklinik Bonn.
Aktuelle Radiol. 1998 Sep;8(5):225-31.
To evaluate early reliable radiographic signs of loosening in cementless total hip arthroplasty compared to clinical follow-up.
Within a time interval of 5 years 89 patients with 101 hips underwent total hip arthroplasty using the Autophor 900 S-prosthesis. Clinical and radiographic follow-up were first performed retrospectively followed by a prospective investigation.
Radiographic evaluation showed prosthesis fixation in 93%. Loosening of the prosthesis was identified in 4 cases of the acetabular component and in 4 cases of the femoral stem. Pain was associated with radiographically detectable loosening of the cementless arthroplastic components in only two cases.
Within a follow-up period of up to five years, loosening of cementless total hip arthroplasty occurs in about 7%. The most reliable radiographic signs of loosening are complete radiolucent zones wider than 2 mm at the bone-component interface, progressive subsidence, migration, or tilt of the component. Pain and movement disorders are not specific symptoms and do not necessarily indicate a loosening of the prosthesis.
与临床随访相比，评估非骨水泥型全髋关节置换术中早期可靠的松动影像学征象。
在5年的时间间隔内，89例患者的101髋接受了使用Autophor 900 S假体的全髋关节置换术。首先进行回顾性的临床和影像学随访，然后进行前瞻性研究。
影像学评估显示93%的假体固定良好。髋臼部件有4例、股骨柄有4例发现假体松动。仅2例疼痛与非骨水泥型关节置换部件影像学可检测到的松动有关。
在长达5年的随访期内，非骨水泥型全髋关节置换术的松动发生率约为7%。最可靠的松动影像学征象是骨-部件界面处宽度超过2 mm的完整透亮区、部件的进行性下沉、移位或倾斜。疼痛和运动障碍不是特异性症状，不一定表明假体松动。
