Preoperative tibiofemoral rotational alignment is a risk factor for component rotational mismatch in total knee arthroplasty.
Aged
Arthroplasty, Replacement, Knee
/ adverse effects
Female
Femur
/ diagnostic imaging
Humans
Knee Joint
/ surgery
Knee Prosthesis
/ adverse effects
Male
Middle Aged
Osteoarthritis, Knee
/ diagnostic imaging
Postoperative Period
Preoperative Period
Retrospective Studies
Risk Factors
Rotation
Tibia
/ diagnostic imaging
Tomography, X-Ray Computed
Treatment Outcome
Component position
Preoperative
Risk factors
Rotational deformity
Rotational mismatch
Total knee arthroplasty
Journal
The Knee
ISSN: 1873-5800
Titre abrégé: Knee
Pays: Netherlands
ID NLM: 9430798
Informations de publication
Date de publication:
Mar 2021
Mar 2021
Historique:
received:
28
09
2020
revised:
13
01
2021
accepted:
22
02
2021
pubmed:
21
3
2021
medline:
13
7
2021
entrez:
20
3
2021
Statut:
ppublish
Résumé
Rotational mismatch between the femoral and tibial components is reported to be a risk factor for unsuccessful total knee arthroplasty (TKA). However, the rotational mismatch can still occur even when each component is aligned within the desired angle. Therefore, there may be other unknown factors. This study aims to investigate a risk factor for component rotational mismatch in TKA. The authors hypothesized a significant correlation between the rotational mismatch angle and not only the rotational alignments of components, but also the preoperative tibiofemoral rotation angle. This retrospective cohort study included 79 knees who underwent TKA. Computed tomography images were obtained preoperatively and 2 weeks after surgery for the component positional measurement. The postoperative component rotational mismatch angle between the tibial and femoral components and the rotational alignment of each tibial and femoral component to anatomical axes was evaluated. In addition, the preoperative rotational angle between the tibia and femur bones and patients' demographics were also investigated. The correlation between the postoperative component rotational mismatch angle and perioperative variables was analyzed to identify risk factors for component rotational mismatch. The mean component rotational mismatch angle was 1.8° of internal rotation of the tibial component relative to the femoral component, and the angle ranged from 11.3° of internal rotation to 7.3° of external rotation of the tibial component. Multivariate regression analysis showed that the preoperative rotational alignment between the tibia and femur and the rotational alignment of each component were influential factors in the postoperative component rotational mismatch angle. The preoperative tibiofemoral rotational alignment and the rotational alignment of each tibial and femoral component and are risk factors for the postoperative component rotational mismatch in TKA.
Sections du résumé
BACKGROUND
BACKGROUND
Rotational mismatch between the femoral and tibial components is reported to be a risk factor for unsuccessful total knee arthroplasty (TKA). However, the rotational mismatch can still occur even when each component is aligned within the desired angle. Therefore, there may be other unknown factors. This study aims to investigate a risk factor for component rotational mismatch in TKA. The authors hypothesized a significant correlation between the rotational mismatch angle and not only the rotational alignments of components, but also the preoperative tibiofemoral rotation angle.
METHOD
METHODS
This retrospective cohort study included 79 knees who underwent TKA. Computed tomography images were obtained preoperatively and 2 weeks after surgery for the component positional measurement. The postoperative component rotational mismatch angle between the tibial and femoral components and the rotational alignment of each tibial and femoral component to anatomical axes was evaluated. In addition, the preoperative rotational angle between the tibia and femur bones and patients' demographics were also investigated. The correlation between the postoperative component rotational mismatch angle and perioperative variables was analyzed to identify risk factors for component rotational mismatch.
RESULTS
RESULTS
The mean component rotational mismatch angle was 1.8° of internal rotation of the tibial component relative to the femoral component, and the angle ranged from 11.3° of internal rotation to 7.3° of external rotation of the tibial component. Multivariate regression analysis showed that the preoperative rotational alignment between the tibia and femur and the rotational alignment of each component were influential factors in the postoperative component rotational mismatch angle.
CONCLUSION
CONCLUSIONS
The preoperative tibiofemoral rotational alignment and the rotational alignment of each tibial and femoral component and are risk factors for the postoperative component rotational mismatch in TKA.
Identifiants
pubmed: 33743260
pii: S0968-0160(21)00075-2
doi: 10.1016/j.knee.2021.02.028
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
448-456Informations de copyright
Copyright © 2021 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest Title: Preoperative Tibiofemoral Rotational Alignment is a Risk Factor for Component Rotational Mismatch in Total Knee Arthroplasty.