Chinese Journal of Tissue Engineering Research

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Zweymüller spiral acetabular prosthesis for treating developmental dysplasia of the hip in adults

Wu Jian, Wang Bing, Yao Li   

  1. Department of Joint Surgery, the First People’s Hospital of Lianyungang Affiliated to Xuzhou Medical College, Lianyungang 222002, Jiangsu Province, China
  • Online:2015-09-24 Published:2015-09-24
  • About author:Wu Jian, Associate chief physician, Department of Joint Surgery, the First People’s Hospital of Lianyungang Affiliated to Xuzhou Medical College, Lianyungang 222002, Jiangsu Province, China
  • Supported by:

    the Project of Lianyungang Municipal Bureau of Health, No. 201505

Abstract:

BACKGROUND: Spiral acetabular prosthesis has good stability during total hip arthroplasty.
OBJECTIVE: To observe the early therapeutic effect of Zweymüller spiral acetabular prosthesis in total hip arthroplasty for patients with developmental dysplasia of the hip.
METHODS: Totally 38 patients (48 hips) with developmental dysplasia of the hip received total hip arthroplasty with Zweymüller spiral acetabular prosthesis from January 2011 to June 2013 were selected. The clinical effect was observed after the operation.
RESULTS AND CONCLUSION: A total of 38 patients were followed up for 21-46 months (averagely 42.3 months). One case suffered from deep venous thrombosis. Harris scores and Charnely scores apparently increased after surgery compared with that before surgery. The mean length of the osteotomy was 2.42±0.48 cm, and the mean extended length of the affected limb was 4.58±1.15 cm. X-ray films showed that there was no disunion of the osteotomy, no subsidence and loosening of prosthesis. The position of the acetabulum was suitable. The healing time of bone graft was 3-11 months (averagely 5.3 months). The coverage of the acetabular component was 92.5%, with a good initial stability, and the excellent rate of the operation was 90%. The satisfaction rate of patients was 84%. These results indicate that the Zweymüller spiral acetabular prosthesis has the advantages of reasonable design, good initial stability, low loosening rate and high satisfaction degree.  However, the number of cases of this study was relatively small, the follow-up time was short, and only the short-term effect was evaluated. Thus, the midterm and long-term effects need to be observed by the follow-up evaluation.

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Hip Joint, Hip Dislocation, Congenital, Acetabulum, Hip Prosthesis

CLC Number: