Mid-term results of Zweymüller SLR-plus? stem used in hip revision
10.3969/j.issn.2095-4344.2014.35.005
- VernacularTitle:Zweymüller SLR-Plus?非骨水泥柄用于髋关节翻修的中期效果
- Author:
Peng LI
;
Zhiqi ZHU
;
Ming HOU
;
Zhanjun SHI
- Publication Type:Journal Article
- Keywords:
hip prosthesis;
arthroplasty,replacement,hip;
fol ow-up studies
- From:
Chinese Journal of Tissue Engineering Research
2014;(35):5600-5605
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:The outcomes of SL-Plus? stem in primary total hip arthroplasty have been proved good, but whether SLR-Plus? revision stem can obtain a good outcome in revision hip arthroplasty needs more studies. OBJECTIVE:To observe the clinical results of revision hip arthroplasty with Zweymül er SLR-plus ? stem. METHODS:Revision hip arthroplasty of 41 hips in 39 patients was performed from November 1997 to May 2013 using SLR-plus ? stem. There were 26 hips (male) and 15 hips (female). They were at the age of 34-73 years old, 53 on average. In the 41 hips, 36 cemented and 5 uncemented femoral prostheses were used. Prosthetic changes on radiographs were observed. In accordance with Brooker classification, heterotopic ossification was classified to record the region and incidence of heterotopic ossification. Hip joint function was evaluated using Harris Hip Score, and survival rate of the prosthesis was analyzed. RESULTS AND CONCLUSION:A total of 31 patients (33 hips) were fol owed up for 1 to 16 years. The mean preoperative Harris hip score of 34 (range, 13-64) points improved to 85 (range, 55-94) points at the time of final fol ow-up. 32 hips (97%) had an excellent result. A 1 mm width radiolucent line was found in 1 femoral component without any symptom. Osteolysis and migration were seen in 1 hip, which needed re-revision. Heterotopic ossification developed in 9 hips, including 2 hips of Brooker grade 1, 4 hips of grade 2 and 3 hips of grade 3. No re-infection was found. Kaplan-Meier survivorship was 92%with radiographic loosening as the end point. Results demonstrated that the SLR-Plus? stem has sufficient immediate and long-term stability, which is reliable for patients undergoing hip revision surgery.
