title: Large-head metal-on-metal total hip arthroplasty using the Durom acetabular component at minimum 1-year interval.
abstract: Large-head metal-on-metal total hip arthroplasty represents novel technology, and outcome data are lacking. We prospectively compared the performance of a nonmodular metal-on-metal acetabular component (Durom; Zimmer, Warsaw, IN) with a modular titanium component (Trilogy, Zimmer). All Durom components placed at our institution with minimum 1-year follow up (n = 63) were compared with an age- and sex-matched Trilogy control group (n = 100). Failure defined as revision or persistent moderate/severe groin pain was significantly higher for the Durom (11.1%) compared with the Trilogy group (0%) (P = .002). Although all acetabular components in both groups appeared radiographically stable, no significant bone ingrowth was noted at the time of Durom revisions. We could not identify any patient/surgical-related factors predictive of failure. Further study is needed to determine the scientific basis for these observations.
authors.affiliation: University of Wisconsin Hospital and Clinics, Department of Orthopedics and Rehabilitation, Clinical Science Center, Madison, Wisconsin, USA.
authors.forename: Richard L
authors.initials: RL
authors.lastname: Illgen
authors.forename: John P
authors.initials: JP
authors.lastname: Heiner
authors.forename: Matthew W
authors.initials: MW
authors.lastname: Squire
authors.forename: David N
authors.initials: DN
authors.lastname: Conrad
mesh_terms: D018771:Arthralgia / Q000453:epidemiology; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D016022:Case-Control Studies; D005260:Female; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D015994:Incidence; D008297:Male; D008670:Metals; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D011446:Prospective Studies; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D012189:Retrospective Studies; D014025:Titanium; D016896:Treatment Outcome
chemical_list: D008670:Metals; D014025:Titanium