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Long-term follow-up results of a second-generation cementless femoral prosthesis with a collar and straight distal fixation channels

Authors
 Chang Wook Han  ;  Ick Hwan Yang  ;  Hye Yeon Lee  ;  Chang Dong Han 
Citation
 Yonsei Medical Journal, Vol.53(1) : 186-192, 2012 
Journal Title
 Yonsei Medical Journal 
ISSN
 0513-5796 
Issue Date
2012
Abstract
PURPOSE: We evaluated the results of more than 10 years of follow-up of total hip arthroplasty using a second-generation cementless femoral prosthesis with a collar and straight distal fixation channels. MATERIALS AND METHODS: One hundred five patients (129 hips) who underwent surgery between 1991 and 1996 for primary total hip arthroplasty using cementless straight distal fluted femoral stems were followed for more than 10 years. Ninety-four hips in 80 patients were available for clinical and radiologic analysis. The mean age at the time of surgery was 47 years, and the mean duration of follow-up was 14.3 years. RESULTS: The mean Harris hip scores had improved from 58 points to 88 points at the time of the 10-year follow-up. Activity-related thigh pain was reported in nine hips (10%). At the last follow-up, 93 stems (99%) were biologically stable and one stem (1%) was revised because of loosening. No hip had distal diaphyseal osteolysis. Proximal femoral stress-shielding was reported in 86 hips (91%). We found no significant relationship between collar-calcar contact and thigh pain, stem fixation status, or stress-shielding. The cumulative survival of the femoral stem was 99% (95% confidence interval, 98-100%) after 10 years. CONCLUSION: The long-term results of total hip arthroplasty using a second-generation cementless femoral prosthesis with a collar and straight distal fixation channels were satisfactory; however, the high rate of proximal stress-shielding and the minimal effect of the collar indicate the need for some changes in the stem design.
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/92058
Files in This Item:
T201200450.pdf Download
DOI
10.3349/ymj.2012.53.1.186
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실)
Yonsei Authors
양익환(Yang, Ick Hwan)
이혜연(Lee, Hye Yeon) ORCID logo https://orcid.org/0000-0001-6945-1967
한창동(Han, Chang Dong)
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