title: Current concepts of metal-on-metal hip resurfacing.
abstract: The second-generation, metal-on-metal (MOM) bearing for total hip replacements was launched in the 1980s, and resurfacing followed in the mid-1990s. Remaining challenges include long-term bone remodeling of the femoral resurfacing and consideration of adverse MOM wear conditions. Precise understanding of manufacturing variables such as alloy types, bearing diameters, design tolerances, and surface finish is imperative in obtaining clinical consistency and safety in the patient. This review examines femoral fixation, bone remodeling, and wear studies of MOM implants and provides a brief overview of the latest outcome and retrieval data and how these data integrate with the in vitro wear studies.
authors.affiliation: Orthopedic Research Center, 11406 Loma Linda Drive #606, Loma Linda University Medical Center, Loma Linda, CA 92354, USA. iclarke@som.llu.edu
authors.forename: Ian C
authors.initials: IC
authors.lastname: Clarke
authors.forename: Thomas
authors.initials: T
authors.lastname: Donaldson
authors.forename: John G
authors.initials: JG
authors.lastname: Bowsher
authors.forename: Sam
authors.initials: S
authors.lastname: Nasser
authors.forename: Tomoki
authors.initials: T
authors.lastname: Takahashi
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods; D001696:Biomechanical Phenomena; D020099:Coated Materials, Biocompatible; D019544:Equipment Failure Analysis; D004869:Equipment Safety; D006622:Hip Prosthesis; D006801:Humans; D008422:Materials Testing; D008670:Metals; D011095:Polyethylenes; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012307:Risk Factors; D013314:Stress, Mechanical; D013499:Surface Properties; D014025:Titanium
chemical_list: D020099:Coated Materials, Biocompatible; D008670:Metals; D011095:Polyethylenes; D014025:Titanium