Article ; Online: Comparison of time courses in postoperative functional outcomes between simultaneous bilateral and unilateral total knee arthroplasty with propensity score matching.
Archives of orthopaedic and trauma surgery
2023 Volume 144, Issue 1, Page(s) 369–375
Abstract: Introduction/objectives: No consensus has been reached on which is better in terms of functional outcomes between simultaneous bilateral and unilateral total knee arthroplasty (TKA). As patient characteristics, such as age, sex, and body mass index, ... ...
Abstract | Introduction/objectives: No consensus has been reached on which is better in terms of functional outcomes between simultaneous bilateral and unilateral total knee arthroplasty (TKA). As patient characteristics, such as age, sex, and body mass index, have significant effects on functional outcomes after TKA, these factors should be matched before comparisons are made. This study aimed to compare time courses in functional outcomes between simultaneous bilateral TKA and unilateral TKA after matching the patient characteristics. Materials and methods: In this retrospective study, the clinical records of patients admitted to a hospital were reviewed. Of 425 patients, 43 underwent simultaneous bilateral TKA, whereas 382 underwent unilateral TKA. Propensity score matching was performed for age, sex, and body mass index between simultaneous bilateral and unilateral TKA patients. Therapists measured pain intensity, knee extensor strength, and knee-specific functional outcomes by using the new knee society score, including total score, symptoms, patient satisfaction, patient expectations, and functional activities preoperatively and 3 and 12 months postoperatively. Two-way repeated analysis of variance was performed to compare the time courses in functional outcomes between simultaneous bilateral and unilateral TKA. Results: After propensity score matching, 40 patients each for underwent bilateral TKA and unilateral TKA were selected. Knee extensor strength in simultaneous bilateral TKA patients was significantly lower than that in unilateral TKA patients at 3 months postoperatively (p = 0.04). A significant interaction was observed between the effects of time and group on knee extensor strength (F [1, 78] = 3.338; interaction: p = 0.042; η Conclusions: Patients who underwent simultaneous bilateral TKA should undergo postoperative rehabilitation focused on alleviating delayed recovery in knee extensor strength during the acute phase. |
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MeSH term(s) | Humans ; Arthroplasty, Replacement, Knee ; Retrospective Studies ; Propensity Score ; Osteoarthritis, Knee/surgery ; Knee Joint/surgery ; Treatment Outcome |
Language | English |
Publishing date | 2023-09-26 |
Publishing country | Germany |
Document type | Journal Article |
ZDB-ID | 80407-1 |
ISSN | 1434-3916 ; 0003-9330 ; 0344-8444 |
ISSN (online) | 1434-3916 |
ISSN | 0003-9330 ; 0344-8444 |
DOI | 10.1007/s00402-023-05065-9 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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