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J Arthroplasty. 2014 Apr;29(4):802-7. doi: 10.1016/j.arth.2013.08.016. Epub 2013 Oct 3.

Long-term outcome of a metal-on-polyethylene cementless hip resurfacing.

Author information

1
David Geffen School of Medicine, University of California, Los Angeles; J. Vernon Luck, Sr., MD Orthopaedic Research Center at Los Angeles Orthopaedic Hospital, in Alliance with UCLA Department of Orthopaedic Surgery.
2
J. Vernon Luck, Sr., MD Orthopaedic Research Center at Los Angeles Orthopaedic Hospital, in Alliance with UCLA Department of Orthopaedic Surgery.
3
Joint Replacement Institute at St. Vincent Medical Center.

Abstract

Due to the well-documented problems surrounding metal-on-metal bearings, the use of hip resurfacing has declined. Since the potential benefits of hip resurfacing remain desirable, it may be beneficial to investigate the long-term outcome of hip resurfacings using metal-on-polyethylene in the 1980's. We report the long-term survivorship and modes of failure of a cementless metal-on-polyethylene resurfacing (n = 178) with different porous ingrowth surfaces. While acetabular loosening was absent, a high incidence of femoral failures (femoral loosening = 18.1%, osteolytic neck fracture = 21%) occurred despite using the same ingrowth surface for both components. Ongoing developments using the lessons learned from these previous generation components and utilizing modern low wear materials, e.g., cross-linked polyethylene, may lead to improved implants for future hip resurfacings.

KEYWORDS:

cementless; hip resurfacing; polyethylene; porous ingrowth; revision hip arthroplasty

PMID:
24090660
DOI:
10.1016/j.arth.2013.08.016
[Indexed for MEDLINE]

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