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Migration of the Charnley stem in rheumatoid arthritis and osteoarthritis. A roentgen stereophotogrammetric study

Önsten, Ingemar LU ; Åkesson, Kristina LU ; Besjakov, Jack LU and Obrant, Karl LU (1995) In Journal of Bone and Joint Surgery 77-B(1). p.18-22
Abstract
Migration of 65 Charnley stems implanted with modern cementing techniques was studied by roentgen stereophotogrammetry. There were 25 patients with rheumatoid arthritis (RA) and 40 with osteoarthritis (OA) followed up for two years. In 43 cases a bone sample for histomorphometric analysis was obtained from the femur during the operation. In 22 cases the mean subsidence of the prosthetic head was 0.40 mm and in 20 the mean posterior migration was 1.25 mm. There was no difference in migration between the two diagnostic groups (p = 0.8) after adjusting for variations in gender, age and weight. Male gender was associated with increased subsidence (p = 0.006). Histological examination showed that the RA series had more osteoid surface (p =... (More)
Migration of 65 Charnley stems implanted with modern cementing techniques was studied by roentgen stereophotogrammetry. There were 25 patients with rheumatoid arthritis (RA) and 40 with osteoarthritis (OA) followed up for two years. In 43 cases a bone sample for histomorphometric analysis was obtained from the femur during the operation. In 22 cases the mean subsidence of the prosthetic head was 0.40 mm and in 20 the mean posterior migration was 1.25 mm. There was no difference in migration between the two diagnostic groups (p = 0.8) after adjusting for variations in gender, age and weight. Male gender was associated with increased subsidence (p = 0.006). Histological examination showed that the RA series had more osteoid surface (p = 0.04), but neither this, nor any of the other histomorphometric variables, influenced migration. These results suggest that, unlike the acetabular socket, the cemented Charnley femoral component is equally secure in osteoarthritis and in rheumatoid arthritis, and that its initial fixation is not influenced by the quality of the local cancellous bone. Our results provide data with which the early performance of new prosthetic designs and fixation methods can be compared. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Bone and Joint Surgery
volume
77-B
issue
1
pages
18 - 22
publisher
British Editorial Society of Bone & Joint Surgery
external identifiers
  • pmid:7822389
ISSN
2044-5377
language
English
LU publication?
yes
id
e276e912-8c49-4427-bc37-95d3b0ebcc9a (old id 1109228)
alternative location
http://www.jbjs.org.uk/cgi/reprint/77-B/1/18
date added to LUP
2008-07-25 16:07:46
date last changed
2016-04-15 20:01:05
@article{e276e912-8c49-4427-bc37-95d3b0ebcc9a,
  abstract     = {Migration of 65 Charnley stems implanted with modern cementing techniques was studied by roentgen stereophotogrammetry. There were 25 patients with rheumatoid arthritis (RA) and 40 with osteoarthritis (OA) followed up for two years. In 43 cases a bone sample for histomorphometric analysis was obtained from the femur during the operation. In 22 cases the mean subsidence of the prosthetic head was 0.40 mm and in 20 the mean posterior migration was 1.25 mm. There was no difference in migration between the two diagnostic groups (p = 0.8) after adjusting for variations in gender, age and weight. Male gender was associated with increased subsidence (p = 0.006). Histological examination showed that the RA series had more osteoid surface (p = 0.04), but neither this, nor any of the other histomorphometric variables, influenced migration. These results suggest that, unlike the acetabular socket, the cemented Charnley femoral component is equally secure in osteoarthritis and in rheumatoid arthritis, and that its initial fixation is not influenced by the quality of the local cancellous bone. Our results provide data with which the early performance of new prosthetic designs and fixation methods can be compared.},
  author       = {Önsten, Ingemar and Åkesson, Kristina and Besjakov, Jack and Obrant, Karl},
  issn         = {2044-5377},
  language     = {eng},
  number       = {1},
  pages        = {18--22},
  publisher    = {British Editorial Society of Bone & Joint Surgery},
  series       = {Journal of Bone and Joint Surgery},
  title        = {Migration of the Charnley stem in rheumatoid arthritis and osteoarthritis. A roentgen stereophotogrammetric study},
  volume       = {77-B},
  year         = {1995},
}