{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T15:52:37Z","timestamp":1774972357890,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2024,3,22]],"date-time":"2024-03-22T00:00:00Z","timestamp":1711065600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The purpose of this study was to investigate the relationship between clinical outcomes and lateral thrust before and after unicompartmental knee arthroplasty (UKA) using inertial measurement sensor units. Eleven knees were evaluated with gait analysis. The varus angular velocity was used to evaluate lateral thrust. The femorotibial angle (FTA) and hip\u2013knee\u2013ankle angle (HKA) were used to evaluate lower-limb alignment, and the Oxford Knee Score (OKS) and Japanese Orthopaedic Association Score (JOA) were used to evaluate clinical outcomes. The mean pre-UKA peak varus velocity was 37.1 \u00b1 9.8\u00b0\/s, and that for post-UKA was 28.8 \u00b1 9.1\u00b0\/s (p = 0.00003), such that instabilities clearly improved. Assuming the definition of lateral thrust is when the varus angular velocity is more than 28.1\u00b0\/s, 81.8% of patients had lateral thrust preoperatively, but this decreased to 55.6% postoperatively, such that the symptoms and objective findings improved. Both OKS and JOA improved after surgery. In addition, HKA was \u22127.9\u00b0 preoperatively and \u22125.8\u00b0 postoperatively (p = 0.024), and FTA was 181.4\u00b0 preoperatively and 178.4\u00b0 postoperatively (p = 0.012). There was a positive correlation between postoperative JOA and FTA, indicating that changes in postoperative alignment affected clinical outcomes. This study quantitatively evaluated the disappearance of lateral thrust by UKA, and it found that the stability can be achieved by UKA for unstable knees with lateral thrust.<\/jats:p>","DOI":"10.3390\/s24072019","type":"journal-article","created":{"date-parts":[[2024,3,22]],"date-time":"2024-03-22T05:10:53Z","timestamp":1711084253000},"page":"2019","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Unicompartmental Knee Arthroplasty for Osteoarthritis Eliminates Lateral Thrust: Associations between Lateral Thrust Detected by Inertial Measurement Units and Clinical Outcomes"],"prefix":"10.3390","volume":"24","author":[{"given":"Hikaru","family":"Sato","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4939-9545","authenticated-orcid":false,"given":"Hiroaki","family":"Kijima","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takehiro","family":"Iwami","sequence":"additional","affiliation":[{"name":"Department of System Design Engineering, Faculty of Engineering Science, Akita University Graduate School of Engineering Science, 1-1 Tegatagakuenmachi, Akita 010-8502, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroaki","family":"Tsukamoto","sequence":"additional","affiliation":[{"name":"Noshiro Kousei Medical Center, Ochiaiazakamimaedachinai, Noshiro 016-0014, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hidetomo","family":"Saito","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8626-1057","authenticated-orcid":false,"given":"Daisuke","family":"Kudo","sequence":"additional","affiliation":[{"name":"Division of Rehabilitation Medicine, Akita University Hospital, 44-2, Hiroomote Hasunuma, Akita 010-8543, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4855-3283","authenticated-orcid":false,"given":"Ryota","family":"Kimura","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7008-675X","authenticated-orcid":false,"given":"Yuji","family":"Kasukawa","sequence":"additional","affiliation":[{"name":"Division of Rehabilitation Medicine, Akita University Hospital, 44-2, Hiroomote Hasunuma, Akita 010-8543, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naohisa","family":"Miyakoshi","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1137","DOI":"10.1016\/j.joca.2009.04.005","article-title":"Prevalence of radiographic knee osteoarthritis and its association with knee pain in the elderly of Japanese population-based cohorts: The ROAD study","volume":"17","author":"Muraki","year":"2009","journal-title":"Osteoarthr. 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