Deputy Chief, Department of Orthopaedics, Heinrich-Heine University Medical School, Moorenstr. 5, 40225 Duesseldorf, Germany.
Eur J Med Res. 2011 Mar 28;16(3):127-32. doi: 10.1186/2047-783x-16-3-127.
The aim of this study was to evaluate the initial acetabular implant stability and late acetabular implant migration in press fit cups combined with screw fixation of the acetabular component in order to answer the question whether screws are necessary for the fixation of the acetabular component in cementless primary total hip arthroplasty. One hundred and seven hips were available for follow-up after primary THA using a cementless, porous-coated acetabular component. A total of 631 standardized radiographs were analyzed digitally by the "single-film-x-ray-analysis" method (EBRA). One hundred and one (94.4 %) acetabular components did not show significant migration of more than 1 mm. Six (5.6%) implants showed migration of more than 1 mm. Statistical analysis did not reveal preoperative patterns that would identify predictors for future migration. Our findings suggest that the use of screw fixation for cementless porous-coated acetabular components for primary THA does not prevent cup migration.
本研究旨在评估压配杯结合髋臼部件螺钉固定在初始髋臼植入物稳定性和晚期髋臼植入物迁移方面的效果，以回答在非骨水泥初次全髋关节置换术中髋臼部件固定是否需要螺钉的问题。107 髋采用非骨水泥、多孔涂层髋臼部件初次 THA 后可进行随访。通过“单张 X 射线分析”（EBRA）方法对总共 631 张标准 X 光片进行了数字化分析。101（94.4%）个髋臼部件没有出现超过 1 毫米的明显迁移。6（5.6%）个植入物出现超过 1 毫米的迁移。统计分析未发现可识别未来迁移预测因素的术前模式。我们的研究结果表明，在初次 THA 中使用螺钉固定非骨水泥多孔涂层髋臼部件并不能防止杯体迁移。
