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Mechanically assisted crevice corrosion of the head-neck taper in a large head metal-on-metal total hip arthroplasty.

ABSTRACT: Taper corrosion of the head-neck junction is a potentially significant and devastating problem facing orthopedic surgeons. We present a case of a 53 year old male who presented for routine follow up for a left, large head, metal on metal total hip arthroplasty five years out. The patient was asymptomatic at the visit. X-rays at the time demonstrated a large amount of medial calcar osteolysis. Serum ion levels revealed a mildly increased cobalt and normal chromium level and hip aspiration revealed brownish fluid. At the time of revision surgery, corrosion of the head-neck taper was found with a normal appearing bearing surface leading to the diagnosis of mechanically assisted crevice corrosion of the head-neck taper with medial calcar osteolysis.

SUBMITTER: Moskal J

PROVIDER: S-EPMC4958113 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature

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Mechanically assisted crevice corrosion of the head-neck taper in a large head metal-on-metal total hip arthroplasty.

Moskal Joseph J Stover Matthew M

Arthroplasty today 20150513 4

Taper corrosion of the head-neck junction is a potentially significant and devastating problem facing orthopedic surgeons. We present a case of a 53 year old male who presented for routine follow up for a left, large head, metal on metal total hip arthroplasty five years out. The patient was asymptomatic at the visit. X-rays at the time demonstrated a large amount of medial calcar osteolysis. Serum ion levels revealed a mildly increased cobalt and normal chromium level and hip aspiration reveale ...[more]

PMID: 28326383

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