Long-term outcomes of cementless femoral stem revision with the Wagner cone prosthesis

Journal of Orthopaedic Surgery and Research

Taek-Rim Yoon¹  Sheng-Yu Jin¹  Jun-Hyuk Lim¹  Kyung-Soon Park¹ 

[1] Department of Orthopedic Surgery, Center for Joint Disease, Chonnam National University Hwasun Hospital, 322 Seo Yang-Ro, Hwasun-Eup, Hwasun-Gun, 519-809, Gwangju, Jeonnam, Republic of Korea;

关键词: Revision total hip arthroplasty;    Cementless femoral stem;    Wagner cone prosthesis;    Stress shielding;   

DOI  :  10.1186/s13018-021-02457-8

来源: Springer

【 摘 要 】

BackgroundThe procedure of femoral stem revision is challenging, and bone conservation with less stress shielding is a mandatory effort in these cases. Although there are several reports of stem revision with stems designed for primary total hip arthroplasty (THA), there is no report on stem revision with the Wagner cone prosthesis.MethodsBetween 1996 and 2008, 41 hips of 41 consecutive patients were subjected to femoral revision THA using the Wagner cone prosthesis. The mean age during revision surgery was 56.1 years, and the mean follow-up period was 14.8 years. The clinical results were evaluated, and the femoral component was assessed radiologically.ResultsThe results showed that the average period from the first operation to revision THA was 8.0 years. Additionally, the mean Harris hip score improved from 52 points preoperatively to 83 points at the final follow-up. All stems showed bone integration in the radiological evaluation. A subsidence of more than 5 mm was observed in 3 out of 28 (10.7%) femoral stems. Two patients needed an acetabular revision for acetabular cup loosening during the follow-up period. Furthermore, one patient had recurrent dislocation and had to undergo revision surgery for soft tissue augmentation.ConclusionsWe achieved favorable clinical and radiological long-term outcomes in femoral stem revision using the Wagner cone prosthesis. This cementless femoral stem could be an option for femoral stem revision in cases with relatively good bone stock.

【 授权许可】

CC BY