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Cementless total hip arthroplasty with a metal-on-metal bearing in patients younger than 50 years.

Abstract
Total hip arthroplasty (THA) longevity is the primary concern in young patients. Metal-on-metal articulations were reintroduced to reduce polyethylene particle-induced osteolysis and improve survivorship; to date, based on issued reports, this strategy appears to have been successful. In this study, the authors investigated metal-on-metal articulation survivorship and osteolysis incidence in young patients (19-50 years old at index operations) and retrospectively reviewed cementless metal-on-metal THAs in 70 patients (78 hips) with a mean follow-up of 12.4 years. Metasul articulation was used with the Wagner acetabular component in all. Survivorship with revision for any cause was 98.7% (95% confidence interval, 98%-100%), and survivorship due to the development of osteolysis for any lesion was 97.5% (95% confidence interval, 95%-99%). Mean Harris hip score improved from 51 to 95 points at final follow-up. The findings of this study indicate that outcomes of cementless THA with a metal-on-metal bearing in young patients are satisfactory. However, longer-term studies in larger cohorts are required to determine whether metal-on-metal articulations are really a favorable option in young patients.
AuthorsKyu-Tae Hwang, Young-Ho Kim, Yee-Suk Kim, Il-Yong Choi
JournalThe Journal of arthroplasty (J Arthroplasty) Vol. 26 Issue 8 Pg. 1481-7 (Dec 2011) ISSN: 1532-8406 [Electronic] United States
PMID21414748 (Publication Type: Journal Article)
CopyrightCopyright © 2011 Elsevier Inc. All rights reserved.
Chemical References
  • Metals
Topics
  • Adult
  • Age Factors
  • Arthritis, Rheumatoid (surgery)
  • Arthroplasty, Replacement, Hip (instrumentation, methods)
  • Cohort Studies
  • Female
  • Femur Head Necrosis (surgery)
  • Follow-Up Studies
  • Hip Joint (diagnostic imaging, surgery)
  • Hip Prosthesis
  • Humans
  • Incidence
  • Male
  • Metals
  • Middle Aged
  • Osteoarthritis, Hip (surgery)
  • Osteolysis (epidemiology, surgery)
  • Osteonecrosis (surgery)
  • Prosthesis Design
  • Radiography
  • Reoperation
  • Retrospective Studies
  • Treatment Outcome

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