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- Title
Clinical utility of markerless motion capture for kinematic evaluation of sit-to-stand during 30 s-CST at one year post total knee arthroplasty: a retrospective study.
- Authors
Onitsuka, Katsuya; Kubota, Keisuke; Yokoyama, Moeka; Miyazawa, Taku; Hamaguchi, Toyohiro; Taniguchi, Hiroto; Usuki, Naohiro; Miyamoto, Satoshi; Okazaki, Ken; Murata, Kenji; Kanemura, Naohiko
- Abstract
Background: Although the importance of kinematic evaluation of the sit-to-stand (STS) test of total knee arthroplasty (TKA) patients is clear, there have been no reports analyzing STS during the 30-s chair sit-up test (30 s-CST) with a focus on kinematic characteristics. This study aimed to demonstrate the clinical utility of kinematic analysis of STS during the 30 s-CST by classifying STS into subgroups based on kinematic parameters, and to determine whether differences in movement strategies are expressed as differences in clinical outcomes. Methods: The subjects were all patients who underwent unilateral TKA due to osteoarthritis of the knee and were followed up for one year postoperatively. Forty-eight kinematic parameters were calculated using markerless motion capture by cutting STS in the 30 s-CST. The principal components of the kinematic parameters were extracted and grouped by kinematic characteristics based on the principal component scores. Clinical significance was examined by testing whether differences in patient-reported outcome measures (PROMs) were observed. Results: Five principal components were extracted from the 48 kinematic parameters of STS and classified into three subgroups (SGs) according to their kinematic characteristics. It was suggested that SG2, using a kinematic strategy similar to the momentum transfer strategy shown in previous studies, performed better in PROMs and, in particular, may be associated with achieving a "forgotten joint", which is considered the ultimate goal after TKA. Conclusions: Clinical outcomes differed according to kinematic strategies used STS, suggesting that kinematic analysis of STS in 30 s-CST may be useful in clinical practice. Trial registration: This study was approved by the Medical Ethical Committee of the Tokyo Women's Medical University (approval number: 5628 on May 21, 2021).
- Subjects
TOTAL knee replacement; MOTION capture (Human mechanics); PATIENT reported outcome measures; KNEE osteoarthritis; MOMENTUM transfer
- Publication
BMC Musculoskeletal Disorders, 2023, Vol 24, Issue 1, p1
- ISSN
1471-2474
- Publication type
Article
- DOI
10.1186/s12891-023-06364-3