title: Five- to ten-year outcomes for modular metal-on-metal total hip arthroplasty.
abstract: In recent years, metal-on-metal (MOM) arthroplasty has come under fire with reported adverse outcomes of metal hypersensitivity, adverse local tissue reaction (ALTR), and the carcinogenicity concern from systemic metal ions. We present a retrospective analysis of 354 primary total hip arthroplasties from 2 independent centers. Revision data, predicted survival and Harris Hip Scores (HHS) are reported. Nine hips (2.5%) underwent component revision, and 9 year predicted survival was 95.8%. One revision had elevated metal ions but no histological evidence of ALTR. Average HHS at a minimum 5 year follow up (range 5-10 years) improved significantly from 52 pre-operatively to 93 post-operatively. While a 2.5% revision rate and improved clinical outcomes are reported in this study, longer term follow-up is warranted to monitor for late complications.
authors: Florida Orthopaedic Institute, Tampa, FL 33637, USA.
authors: Thomas L
authors: TL
authors: Bernasek
authors: John A
authors: JA
authors: Polikandriotis
authors: Melissa F
authors: MF
authors: Levering
authors: David F
authors: DF
authors: Dalury
authors: David A
authors: DA
authors: Fisher
authors: Michael J
authors: MJ
authors: Adler
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D007477:Ions; D008297:Male; D008670:Metals; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation / Q000706:statistics & numerical data; D012189:Retrospective Studies; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D007477:Ions; D008670:Metals
keywords: metal-on-metal; modular; total hip arthroplasty