Long-term behaviour of the Charnley offset-bore acetabular cup

We report the long-term radiological results of 58 total hip arthroplasties (THA) using the Charnley offset-bore acetabular socket. Wear was measured at four sites and radiolucent lines and possible migration were recorded. Four cups were retrieved at revision and were examined using light microscop...

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Veröffentlicht in:Journal of bone and joint surgery. British volume 1998, Vol.80 (1), p.48-53
Hauptverfasser: IOANNIDIS, T. T, ZACHARAKIS, N, MAGNISSALIS, E. A, ELIADES, G, HARTOFILAKIDIS, G
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container_end_page 53
container_issue 1
container_start_page 48
container_title Journal of bone and joint surgery. British volume
container_volume 80
creator IOANNIDIS, T. T
ZACHARAKIS, N
MAGNISSALIS, E. A
ELIADES, G
HARTOFILAKIDIS, G
description We report the long-term radiological results of 58 total hip arthroplasties (THA) using the Charnley offset-bore acetabular socket. Wear was measured at four sites and radiolucent lines and possible migration were recorded. Four cups were retrieved at revision and were examined using light microscopy, SEM and X-ray microanalysis. At a mean follow-up of seven years the mean wear in the DeLee and Charnley zone I was 0.4 mm and in zone II 0.26 mm. The wear rate was 0.06 and 0.04 mm/year, respectively. Progression of radiolucent lines was seen in five cases (8.6%). Three sockets (5.2%) were revised because of aseptic migration at a mean follow-up of 9.8 years and one socket for infection at two years. The offset-bore acetabular cup had excellent wear behaviour and a low migration and revision rate. We recommend that it should be considered in THA since the use of small cups is increasing, particularly in revision cases.
doi_str_mv 10.1302/0301-620X.80B1.0800048
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2044-5377
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source MEDLINE; Alma/SFX Local Collection
subjects Acetabulum
Adult
Aged
Arthroplasty, Replacement, Hip
Biological and medical sciences
Female
Follow-Up Studies
Hip Dislocation - surgery
Hip Prosthesis
Humans
Medical sciences
Middle Aged
Orthopedic surgery
Prosthesis Design
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Treatment Outcome
title Long-term behaviour of the Charnley offset-bore acetabular cup
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