Late stabilization after initial migration in patients undergoing cemented total knee arthroplasty : a 5-year followup of 2 randomized controlled trials using radiostereometric analysis
(2022) In Acta Orthopaedica 93. p.271-276- Abstract
BACKGROUND AND PURPOSE: In total knee arthroplasty (TKA), metal-backed (MBT) and all-polyethylene (APT) designs have shown comparable implant migration up to 2 years postoperatively using radiostereometric analysis (RSA). However, studies comparing mid-term migration of both designs are lacking. Furthermore, continuously migrating TKAs up to 2 years may continue to migrate or stabilize thereafter. Therefore, we compared 5-year migration of MBT and APT using either cruciate-stabilizing (CS) or posteriorstabilizing (PS) designs and specifically assessed migration profiles of continuously migrating TKAs beyond 2 years. PATIENTS AND METHODS: The present study includes results from 2 randomized trials comparing migration of cemented MBT... (More)
BACKGROUND AND PURPOSE: In total knee arthroplasty (TKA), metal-backed (MBT) and all-polyethylene (APT) designs have shown comparable implant migration up to 2 years postoperatively using radiostereometric analysis (RSA). However, studies comparing mid-term migration of both designs are lacking. Furthermore, continuously migrating TKAs up to 2 years may continue to migrate or stabilize thereafter. Therefore, we compared 5-year migration of MBT and APT using either cruciate-stabilizing (CS) or posteriorstabilizing (PS) designs and specifically assessed migration profiles of continuously migrating TKAs beyond 2 years. PATIENTS AND METHODS: The present study includes results from 2 randomized trials comparing migration of cemented MBT with APT of either CS (CS study, n = 59) or PS (PS study, n = 56) design. 2 surgeons performed all surgeries. We used a linear mixed model for the analyses. RESULTS: The overall migration between MBT and APT TKAs was similar for either the CS or PS design over a 5-year period. In both studies combined, 9 implants showed continuous migration in the second postoperative year, of which 1 (APT-CS) was revised for instability, 4 (2 MBT-CS, MBT-PS, APT-PS) stabilized, and 4 (2 MBT-CS, APT-CS, MBT-PS) lacked 5-year data. INTERPRETATION: Overall migration was similar between MBT and APT TKAs up to 5 years, for both the CS and PS design. 4 initially migrating TKAs stabilized between 2- and 5-year follow-up, stressing the need for longer-term followup to determine whether second-year continuous migration correctly predicts loosening.
(Less)
- author
- Hasan, Shaho ; Kaptein, Bart L. ; Marang-van de Mheen, Perla J. ; Van Hamersveld, Koen T. ; Nelissen, Rob G.H.H. and Toksvig-Larsen, Sören LU
- organization
- publishing date
- 2022-01-24
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Acta Orthopaedica
- volume
- 93
- pages
- 6 pages
- publisher
- Taylor & Francis
- external identifiers
-
- scopus:85123905254
- pmid:35099566
- ISSN
- 1745-3682
- DOI
- 10.2340/17453674.2022.1381
- language
- English
- LU publication?
- yes
- id
- 04644d3d-c855-4332-ac69-2581cd8e5b67
- date added to LUP
- 2022-04-06 12:36:46
- date last changed
- 2024-06-20 00:00:51
@article{04644d3d-c855-4332-ac69-2581cd8e5b67,
abstract = {{<p>BACKGROUND AND PURPOSE: In total knee arthroplasty (TKA), metal-backed (MBT) and all-polyethylene (APT) designs have shown comparable implant migration up to 2 years postoperatively using radiostereometric analysis (RSA). However, studies comparing mid-term migration of both designs are lacking. Furthermore, continuously migrating TKAs up to 2 years may continue to migrate or stabilize thereafter. Therefore, we compared 5-year migration of MBT and APT using either cruciate-stabilizing (CS) or posteriorstabilizing (PS) designs and specifically assessed migration profiles of continuously migrating TKAs beyond 2 years. PATIENTS AND METHODS: The present study includes results from 2 randomized trials comparing migration of cemented MBT with APT of either CS (CS study, n = 59) or PS (PS study, n = 56) design. 2 surgeons performed all surgeries. We used a linear mixed model for the analyses. RESULTS: The overall migration between MBT and APT TKAs was similar for either the CS or PS design over a 5-year period. In both studies combined, 9 implants showed continuous migration in the second postoperative year, of which 1 (APT-CS) was revised for instability, 4 (2 MBT-CS, MBT-PS, APT-PS) stabilized, and 4 (2 MBT-CS, APT-CS, MBT-PS) lacked 5-year data. INTERPRETATION: Overall migration was similar between MBT and APT TKAs up to 5 years, for both the CS and PS design. 4 initially migrating TKAs stabilized between 2- and 5-year follow-up, stressing the need for longer-term followup to determine whether second-year continuous migration correctly predicts loosening.</p>}},
author = {{Hasan, Shaho and Kaptein, Bart L. and Marang-van de Mheen, Perla J. and Van Hamersveld, Koen T. and Nelissen, Rob G.H.H. and Toksvig-Larsen, Sören}},
issn = {{1745-3682}},
language = {{eng}},
month = {{01}},
pages = {{271--276}},
publisher = {{Taylor & Francis}},
series = {{Acta Orthopaedica}},
title = {{Late stabilization after initial migration in patients undergoing cemented total knee arthroplasty : a 5-year followup of 2 randomized controlled trials using radiostereometric analysis}},
url = {{http://dx.doi.org/10.2340/17453674.2022.1381}},
doi = {{10.2340/17453674.2022.1381}},
volume = {{93}},
year = {{2022}},
}