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Wear-through of Metal-Backed Acetabular Shell in Total Hip Arthroplasty
Resource
JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION v.102 n.5 pp.334-337
Journal
JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION
Journal Volume
v.102
Journal Issue
n.5
Pages
334-337
Date Issued
2003
Date
2003
Author(s)
HUANG, KOU-YUAN
LIU, HWA-CHANG
HOU, SHENG-MOU
Abstract
Full-thickness wear-through of the metal-backed acetabular shell after total hip arthroplasty is unlikely in patients who receive adequate follow -up after operation. We report such a case that occurred after neglect of a dislodged polyethylene liner from the cup of a total hip prosthesis. The patient was a 71-year-old retired male laborer with a 40 -year history of alcohol dependence that may have contributed to the decline in his condition. During a period of almost 7 years, clinical findings such as clicking sound , leg length shortening, eccentric position of the femoral head relative to the acetabular shell, and metallic mark in the polyethylene liner had been identified on radiographic examination. However, delayed recognition of the clinical importance of these findings resulted in full thickness wear -through and subsequent bony deficiency.