Metal-on-metal CoCrMo McKee-Farrar total hip arthroplasty : characteristics from a long-term follow-up study

A total of 38 cemented metal-on-metal CoCrMo McKee-Farrar total hip arthroplasties (THAs) were clinically and radiographically evaluated over a long-term follow-up. No osteolysis and no granuloma were found more than 20 years after the operation. The main radiological findings were bone erosion and...

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Bibliographic Details
Published in:Archives of orthopaedic and trauma surgery 1997-02, Vol.116 (3), p.121-124
Main Authors: HIGUCHI, F, INOUE, A, SEMLITSCH, M
Format: Article
Language:English
Subjects:
Adult
Age Distribution
Aged
Biological and medical sciences
Bone Cements
Chromium
Cobalt
Evaluation Studies as Topic
Female
Follow-Up Studies
Hip Prosthesis - adverse effects
Humans
Joint surgery
Male
Medical sciences
Metals
Middle Aged
Molybdenum
Orthopedic surgery
Osteoarthritis - surgery
Prognosis
Prosthesis Design
Prosthesis Failure
Reoperation
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Time Factors
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Summary:A total of 38 cemented metal-on-metal CoCrMo McKee-Farrar total hip arthroplasties (THAs) were clinically and radiographically evaluated over a long-term follow-up. No osteolysis and no granuloma were found more than 20 years after the operation. The main radiological findings were bone erosion and migration of the acetabular component, seen in 17 hips (44.7%). The direction of the migration correlated with the setting position of the acetabular component at operation. At revision surgery, metallosis was observed in unstable THA, and no metallosis was observed in stable THA. Using a micrometer, no wear of the sockets was found. Therefore, the loosening was thought to be due to the equatorial bearing rather than to metallosis. The mean survival of the THA to data was 14.6 years in those patients 60 years old or younger at operation and was significantly less (11.9 years) in those 61 years old or older at operation (P < 0.03). The mean survival time was 13.8 years.
ISSN:0936-8051
1434-3916
DOI:10.1007/bf00426058