A high prevalence of corrosion at the head-neck taper with contemporary Zimmer non-cemented femoral hip components.

Document Type

Article

Publication Date

7-1-2015

Institution/Department

Surgery

Journal Title

The Journal of arthroplasty

MeSH Headings

Adult, Aged, Arthroplasty, Replacement, Hip, Ceramics, Chromium, Chromium Alloys, Cobalt, Corrosion, Female, Follow-Up Studies, Hip Prosthesis, Humans, Male, Middle Aged, Polyethylene, Prevalence, Prosthesis Design, Prosthesis Failure, Stress, Mechanical

Abstract

Mechanically assisted crevice corrosion (MACC) occurs at metal/metal modular junctions in which at least one of the components is fabricated from cobalt-chromium alloy and may lead to adverse local tissue reaction (ALTR) in patients with metal-on-polyethylene (MoP) total hip arthroplasty. This type of reaction has been previously described in hips with head/neck modularity, but the prevalence is unknown. We found a prevalence of 1.1 percent in a consecutive series of 1356 contemporary Zimmer non-cemented femoral hip components followed for a minimum of 2years. The average time to presentation was 3.7years (range, 9-105months); delay in treatment led to irreversible soft tissue damage in three patients. We recommend usage of ceramic heads until this problem is further understood.

ISSN

1532-8406

First Page

1265

Last Page

1268

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