Unknown

Dataset Information

0

Equivalent 2-year stabilization of uncemented tibial component migration despite higher early migration compared with cemented fixation: an RSA study on 360 total knee arthroplasties.


ABSTRACT: Background and purpose - Thresholds of implant migration for predicting long-term successful fixation of tibial components in total knee arthroplasty have not separated cemented and uncemented fixation. We compared implant migration of cemented and uncemented components at 1 year and as the change in migration from 1 to 2 years. Patients and methods - Implant migration of 360 tibial components measured using radiostereometric analysis was compared at 1 year and as the change in migration from 1 to 2 years in 222 cemented components (3 implant designs) and 138 uncemented components (5 implant designs). Results - 1-year maximum total point motion was lower for the cemented tibial components compared with the uncemented components (median = 0.31 mm [0.03-2.98] versus 0.63 mm [0.11-5.19] respectively, p < 0.001, mixed model). The change in migration from 1 to 2 years, however, was equivalent for cemented and uncemented components (mean [SD] 0.06 mm [0.19] and 0.07 mm [0.27] mm respectively, p = 0.6, mixed model). Interpretation - These findings suggest that current thresholds of acceptable migration at 1 year may be better optimized by considering cemented and uncemented tibial components separately as higher early migration of uncemented components was not associated with decreased stability from 1 to 2 years.

SUBMITTER: Laende EK 

PROVIDER: S-EPMC6461081 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

altmetric image

Publications

Equivalent 2-year stabilization of uncemented tibial component migration despite higher early migration compared with cemented fixation: an RSA study on 360 total knee arthroplasties.

Laende Elise K EK   Astephen Wilson Janie L JL   Mills Flemming Joanna J   Valstar Edward R ER   Richardson C Glen CG   Dunbar Michael J MJ  

Acta orthopaedica 20190123 2


Background and purpose - Thresholds of implant migration for predicting long-term successful fixation of tibial components in total knee arthroplasty have not separated cemented and uncemented fixation. We compared implant migration of cemented and uncemented components at 1 year and as the change in migration from 1 to 2 years. Patients and methods - Implant migration of 360 tibial components measured using radiostereometric analysis was compared at 1 year and as the change in migration from 1  ...[more]

Similar Datasets

| S-EPMC8369662 | biostudies-literature
| S-EPMC3584612 | biostudies-literature
| S-EPMC10003978 | biostudies-literature
| S-EPMC6066768 | biostudies-literature
| S-EPMC2656955 | biostudies-other
| S-EPMC6746274 | biostudies-literature
| S-EPMC10635966 | biostudies-literature
| S-EPMC6066763 | biostudies-literature
| S-EPMC10792398 | biostudies-literature
| S-EPMC2584290 | biostudies-literature