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Long-Term Outcomes After Metal-on-Metal Total Hip Arthroplasty With a 28-mm Head: A 17-to 23-Year Follow-Up Study of a Previous Report

Title
Long-Term Outcomes After Metal-on-Metal Total Hip Arthroplasty With a 28-mm Head: A 17-to 23-Year Follow-Up Study of a Previous Report
Author
김영호
Keywords
metal-on-metal; small head; total hip arthroplasty; osteolysis; survivorship
Issue Date
2018-07
Publisher
CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS
Citation
JOURNAL OF ARTHROPLASTY, v. 33, no. 7, page. 2165-2172
Abstract
Background: Second-generation, metal-on-metal total hip arthroplasty (MoM THA) using a 28-mm head has shown favorable results compared with large head MoM THA. The purpose of this study is to evaluate the long-term outcomes of cementless primary MoM THA with a 28-mm head and the incidence of osteolysis using computed tomography.Methods: A total of 92 patients (53 men and 39 women) who underwent primary cementless MoM THA (114 hips) with a 28-mm head were enrolled in this study. Their mean age was 46.2 years at the time of surgery. The mean follow-up duration was 20 years. The Harris hip score, presence of thigh or groin pain, radiographic results, presence of peri-implant osteolysis, histologic analysis, and Kaplan-Meier survival curves were evaluated.Results: The mean preoperative Harris hip score of 50.5 improved to 85.1 at the final follow-up. Eight patients (8 hips) experienced groin pain, but none had thigh pain. Twelve revisions (6.2%) were performed including 10 hips for aseptic loosening with osteolysis and 2 hips for periprosthetic fracture around the stem. At 23 years, 91% of patients were free from revision of the acetabular component due to aseptic loosening and 90.1% were free from revision of both femoral and acetabular components due to any reason. Osteolysis was identified around the cup in 12 cases (10.5%) and around the stem in 7 cases (6.1%).Conclusion: MoM THA with a 28-mm head showed a relatively low rate of aseptic implant loosening at a mean follow-up of 20 years. (c) 2018 Elsevier Inc. All rights reserved.
URI
https://www.arthroplastyjournal.org/article/S0883-5403(18)30239-0/fulltexthttp://repository.hanyang.ac.kr/handle/20.500.11754/119462
ISSN
0883-5403; 1532-8406
DOI
10.1016/j.arth.2018.02.089
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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