No difference in 13-year survival after medial pivot or central pivot mobile bearing total knee arthroplasty. A propensity matched comparative analysis.
Details
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State: Public
Version: Final published version
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Serval ID
serval:BIB_4B5CFF676A16
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
No difference in 13-year survival after medial pivot or central pivot mobile bearing total knee arthroplasty. A propensity matched comparative analysis.
Journal
Knee surgery, sports traumatology, arthroscopy
Working group(s)
French Society for Hip and Knee Surgery (SFHG)
ISSN
1433-7347 (Electronic)
ISSN-L
0942-2056
Publication state
Published
Issued date
11/2021
Peer-reviewed
Oui
Volume
29
Number
11
Pages
3648-3653
Language
english
Notes
Publication types: Journal Article ; Multicenter Study
Publication Status: ppublish
Publication Status: ppublish
Abstract
The present study was designed to evaluate the long-term results (more than 10 years) of mobile bearing total knee arthroplasty (TKA) and to compare the survival of medial pivot axis (MPA) and central pivot axis (CPA) TKAs. The primary hypothesis was that the 10- to 15-year survival rate of MPA TKAs will be better than CPA TKAs.
A national, multicenter, retrospective study was performed in France. In this case-control design, 1154 TKAs were paired into the CPA group (control group: 577 cases) and MPA group (study group: 577 cases) based on a logistic regression analysis of age, gender, body mass index and severity of the coronal deformity, defining the propensity score for each case. Final survival information follow-up was obtained for 946 cases (82%).
There was no significant difference between the control and study groups for any baseline data. Twenty-two prosthetic revisions (2%) were performed for mechanical reasons during the follow-up period. There was no significant difference between the 13-year survival rates of CPA (98%) and MPA (97%) TKAs. There was no significant difference between groups in their final Oxford and Knee Society scores.
Our findings do not support the assumption that medialization of the pivot axis of a mobile bearing TKA improves clinical results or survival.
Level III.
A national, multicenter, retrospective study was performed in France. In this case-control design, 1154 TKAs were paired into the CPA group (control group: 577 cases) and MPA group (study group: 577 cases) based on a logistic regression analysis of age, gender, body mass index and severity of the coronal deformity, defining the propensity score for each case. Final survival information follow-up was obtained for 946 cases (82%).
There was no significant difference between the control and study groups for any baseline data. Twenty-two prosthetic revisions (2%) were performed for mechanical reasons during the follow-up period. There was no significant difference between the 13-year survival rates of CPA (98%) and MPA (97%) TKAs. There was no significant difference between groups in their final Oxford and Knee Society scores.
Our findings do not support the assumption that medialization of the pivot axis of a mobile bearing TKA improves clinical results or survival.
Level III.
Keywords
Arthroplasty, Replacement, Knee, Follow-Up Studies, Humans, Knee Joint/surgery, Knee Prosthesis, Osteoarthritis, Knee/surgery, Prosthesis Design, Range of Motion, Articular, Retrospective Studies, Central pivot, Knee, Medial pivot, Mobile bearing, Survival, Total knee arthroplasty, Total knee replacement
Pubmed
Web of science
Create date
16/11/2020 15:54
Last modification date
27/07/2023 6:57
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