title: The argument for the use of Metasul as an articulation surface in total hip replacement.
abstract: Metasul metal-on-metal articulations have been used for 15 years in approximately 300,000 total hip replacements. We have used Metasul articulations in three clinical studies and have shown clinical success as measured by Harris hip scores and patient self-assessment; we also have had the usual mechanical complications. The only complications have been mechanical, including two cup loosenings and 24 dislocations in a total of 582 patients (619 hips; 3.8%) who had Metasul articulations and were included in these studies. In the randomized study, the group who had Metasul articulations had no clinical results or complications different from the control ceramic-on-polyethylene group. Authors of retrieval results in the literature report low annual linear wear rates and no consequences of elevated Co ion levels. Currently, the scientific evidence of the results of using the Metasul articulation would recommend its continued use in any patient who does not have compromised renal function.
authors.affiliation: The Arthritis Institute, 501 E. hardy Street, Suite 300, Inglewood, CA 90301, USA. patricia.paul@tenethealth.com
authors.forename: Lawrence D
authors.initials: LD
authors.lastname: Dorr
authors.forename: William T
authors.initials: WT
authors.lastname: Long
authors.forename: Leighellen
authors.initials: L
authors.lastname: Sirianni
authors.forename: Martha
authors.initials: M
authors.lastname: Campana
authors.forename: Zhinian
authors.initials: Z
authors.lastname: Wan
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods; D002516:Ceramics / Q000737:chemistry*; D002858:Chromium Alloys / Q000737:chemistry*; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D007593:Joint Instability / Q000517:prevention & control; D008297:Male; D008422:Materials Testing; D008875:Middle Aged; D011183:Postoperative Complications; D011474:Prosthesis Design; D011475:Prosthesis Failure; D016032:Randomized Controlled Trials as Topic; D016059:Range of Motion, Articular / Q000502:physiology; D012086:Reoperation / Q000706:statistics & numerical data; D018570:Risk Assessment; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D002858:Chromium Alloys