オカザキ　ケン   OKAZAKI Ken   岡崎　賢    所属   医学部 医学科（東京女子医科大学病院）    職種   教授・基幹分野長
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	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.
掲載誌名	正式名：BMC musculoskeletal disorders 略　 称：BMC Musculoskelet Disord ISSNコード：14712474/14712474
掲載区分	国外
巻・号・頁	24(1),pp.254
著者・共著者	Katsuya Onitsuka, Keisuke Kubota, Moeka Yokoyama, Taku Miyazawa, Toyohiro Hamaguchi, Hiroto Taniguchi, Naohiro Usuki, Satoshi Miyamoto, Ken Okazaki, Kenji Murata, Naohiko Kanemura
担当区分	最終著者
発行年月	2023/04
概要	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).
DOI	10.1186/s12891-023-06364-3
PMID	37005665