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Long-Term Outcomes of Ultra-Short Metaphyseal-Fitting Anatomic Cementless Femoral Stem in Total Hip Arthroplasty With Ceramic-on-Ceramic Articulation for Young Patients

Title
Long-Term Outcomes of Ultra-Short Metaphyseal-Fitting Anatomic Cementless Femoral Stem in Total Hip Arthroplasty With Ceramic-on-Ceramic Articulation for Young Patients
Authors
Kim, Young-HooPark, Jang-Won
Ewha Authors
박장원
SCOPUS Author ID
박장원scopus
Issue Date
2019
Journal Title
JOURNAL OF ARTHROPLASTY
ISSN
0883-5403JCR Link

1532-8406JCR Link
Citation
JOURNAL OF ARTHROPLASTY vol. 34, no. 10, pp. 2427 - 2433
Keywords
total hip arthroplastycementlessultra-short anatomic stemclinical outcomerevision ratesurvival rate
Publisher
CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Background: The aim of this study is to assess the long-term outcomes of this specific stem in patients younger than 50 years old, with regard to clinical and radiographic outcomes, survivorship, and complication rate. Methods: Two hundred thirty-nine consecutive series of patients (324 hips) who were younger than 50 years old at the time of surgery were enrolled in the study. Osteonecrosis (50%) and dysplastic hip (34%) were most common diagnoses. Patients were informed to use crutches or walker for 4 weeks to protect the femoral component against rotational stress. The mean follow-up was 15.6 years (range 14-17). Results: At the latest follow-up, the mean Harris Hip Score, Western Ontario and McMaster Universities Osteoarthritis Index score, and University of California, Los Angeles activity score were 93 points, 13 points, and 7 points, respectively. Three patients (1.3%) had moderate thigh pain. All of the acetabular components and 321 (99%) femoral stems were solidly fixed at the time of the latest follow-up. Three stems (0.9%) were revised for aseptic loosening. Two hips (0.6%) had a dislocation and 2 hips (0.6%) had a periprosthetic fracture. Ceramic fracture or osteolysis was not found in any hip at the time of the final follow-up. Survival rate of the femoral component was 99.1% (95% confidence interval 94-100) and that of the acetabular component was 100% (95% confidence interval 94-100) at 15.6 years. Conclusion: In this series, THA using an ultra-short metaphyseal-fitting anatomic cementless femoral stem provided excellent long-term clinical and radiographic results in patients younger than 50 years old. Furthermore, our initial theoretical concerns about early aseptic loosening due to the absence of distal stem fixation were not justified. (C) 2019 Elsevier Inc. All rights reserved.
DOI
10.1016/j.arth.2019.04.036
Appears in Collections:
의과대학 > 의학과 > Journal papers
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