2-year follow-up report on micromotion of a short tibia stem.
(2015) In Acta Orthopaedica 86(5). p.594-598- Abstract
- Background and purpose - A shortened tibial stem could influence the early prosthetic fixation. We therefore compared the short stem to the standard-length stem using radiostereometric analysis (RSA) as primary outcome measure. Patients and methods - 60 patients were randomized to receive a cemented Triathlon total knee arthroplasty (TKA) with a tibial tray of either standard or short stem length. The patients were blinded regarding treatment allocation. The micromotion of the tibial component was measured by RSA postoperatively, at 3 months, and after 1 and 2 years; clinical outcome was measured with the American Knee Society score (AKSS) and the knee osteoarthritis and injury outcome score (KOOS). Results - The maximum total point motion... (More)
- Background and purpose - A shortened tibial stem could influence the early prosthetic fixation. We therefore compared the short stem to the standard-length stem using radiostereometric analysis (RSA) as primary outcome measure. Patients and methods - 60 patients were randomized to receive a cemented Triathlon total knee arthroplasty (TKA) with a tibial tray of either standard or short stem length. The patients were blinded regarding treatment allocation. The micromotion of the tibial component was measured by RSA postoperatively, at 3 months, and after 1 and 2 years; clinical outcome was measured with the American Knee Society score (AKSS) and the knee osteoarthritis and injury outcome score (KOOS). Results - The maximum total point motion (MTPM) for the standard stem was 0.36 (SD 0.16) mm at 3 months, 0.51 (SD 0.27) mm at 1 year, and 0.54 (SD 0.28) mm at 2 years. For the short stem, it was 0.42 (0.24) mm, 0.59 (0.43) mm, and 0.61 (0.39) mm. 4 short-stemmed components and 2 standard-stemmed components had more than 0.2 mm of migration between the first- and second-year follow-up, and were classified as continuously migrating. Interpretation - The short-stemmed cemented tibial prosthesis showed an early prosthetic migratory pattern similar to that of the standard-stemmed cemented Triathlon knee prosthesis. The number of continuously migrating tibial plates in each group is predictive of a lower revision rate than 5% at 10 years. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5257646
- author
- Molt, Mats LU and Toksvig-Larsen, Sören LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Acta Orthopaedica
- volume
- 86
- issue
- 5
- pages
- 594 - 598
- publisher
- Taylor & Francis
- external identifiers
-
- pmid:25809183
- wos:000361286600011
- scopus:84941352739
- pmid:25809183
- ISSN
- 1745-3682
- DOI
- 10.3109/17453674.2015.1033303
- language
- English
- LU publication?
- yes
- id
- 420ab559-755f-4774-ba67-87664a5f7174 (old id 5257646)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/25809183?dopt=Abstract
- date added to LUP
- 2016-04-01 10:36:48
- date last changed
- 2022-03-12 07:26:11
@article{420ab559-755f-4774-ba67-87664a5f7174,
abstract = {{Background and purpose - A shortened tibial stem could influence the early prosthetic fixation. We therefore compared the short stem to the standard-length stem using radiostereometric analysis (RSA) as primary outcome measure. Patients and methods - 60 patients were randomized to receive a cemented Triathlon total knee arthroplasty (TKA) with a tibial tray of either standard or short stem length. The patients were blinded regarding treatment allocation. The micromotion of the tibial component was measured by RSA postoperatively, at 3 months, and after 1 and 2 years; clinical outcome was measured with the American Knee Society score (AKSS) and the knee osteoarthritis and injury outcome score (KOOS). Results - The maximum total point motion (MTPM) for the standard stem was 0.36 (SD 0.16) mm at 3 months, 0.51 (SD 0.27) mm at 1 year, and 0.54 (SD 0.28) mm at 2 years. For the short stem, it was 0.42 (0.24) mm, 0.59 (0.43) mm, and 0.61 (0.39) mm. 4 short-stemmed components and 2 standard-stemmed components had more than 0.2 mm of migration between the first- and second-year follow-up, and were classified as continuously migrating. Interpretation - The short-stemmed cemented tibial prosthesis showed an early prosthetic migratory pattern similar to that of the standard-stemmed cemented Triathlon knee prosthesis. The number of continuously migrating tibial plates in each group is predictive of a lower revision rate than 5% at 10 years.}},
author = {{Molt, Mats and Toksvig-Larsen, Sören}},
issn = {{1745-3682}},
language = {{eng}},
number = {{5}},
pages = {{594--598}},
publisher = {{Taylor & Francis}},
series = {{Acta Orthopaedica}},
title = {{2-year follow-up report on micromotion of a short tibia stem.}},
url = {{https://lup.lub.lu.se/search/files/1991378/8228765.pdf}},
doi = {{10.3109/17453674.2015.1033303}},
volume = {{86}},
year = {{2015}},
}