{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,25]],"date-time":"2025-10-25T14:23:35Z","timestamp":1761402215105,"version":"build-2065373602"},"reference-count":29,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,5,12]],"date-time":"2022-05-12T00:00:00Z","timestamp":1652313600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003130","name":"Research Foundation Flanders (FWO)","doi-asserted-by":"publisher","award":["T004716N"],"award-info":[{"award-number":["T004716N"]}],"id":[{"id":"10.13039\/501100003130","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Osteoarthritis is a common musculoskeletal disorder. Classification models can discriminate an osteoarthritic gait pattern from that of control subjects. However, whether the output of learned models (probability of belonging to a class) is usable for monitoring a person\u2019s functional recovery status post-total knee arthroplasty (TKA) is largely unexplored. The research question is two-fold: (I) Can a learned classification model\u2019s output be used to monitor a person\u2019s recovery status post-TKA? (II) Is the output related to patient-reported functioning? We constructed a logistic regression model based on (1) pre-operative IMU-data of level walking, ascending, and descending stairs and (2) 6-week post-operative data of walking, ascending-, and descending stairs. Trained models were deployed on subjects at three, six, and 12 months post-TKA. Patient-reported functioning was assessed by the KOOS-ADL section. We found that the model trained on 6-weeks post-TKA walking data showed a decrease in the probability of belonging to the TKA class over time, with moderate to strong correlations between the model\u2019s output and patient-reported functioning. Thus, the LR-model\u2019s output can be used as a screening tool to follow-up a person\u2019s recovery status post-TKA. Person-specific relationships between the probabilities and patient-reported functioning show that the recovery process varies, favouring individual approaches in rehabilitation.<\/jats:p>","DOI":"10.3390\/s22103698","type":"journal-article","created":{"date-parts":[[2022,5,12]],"date-time":"2022-05-12T23:08:36Z","timestamp":1652396916000},"page":"3698","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Can the Output of a Learned Classification Model Monitor a Person\u2019s Functional Recovery Status Post-Total Knee Arthroplasty?"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9218-7604","authenticated-orcid":false,"given":"Jill","family":"Emmerzaal","sequence":"first","affiliation":[{"name":"Human Movement Biomechanics Research Group, Department of Movement Sciences, KU Leuven, 3001 Leuven, Belgium"},{"name":"REVAL Rehabilitation Research, Hasselt University, 3590 Diepenbeek, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arne","family":"De Brabandere","sequence":"additional","affiliation":[{"name":"Declarative Languages and Artificial Intelligence Group, Department of Computer Science, KU Leuven, 3001 Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5071-2124","authenticated-orcid":false,"given":"Rob","family":"van der Straaten","sequence":"additional","affiliation":[{"name":"REVAL Rehabilitation Research, Hasselt University, 3590 Diepenbeek, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Johan","family":"Bellemans","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics, Ziekenhuis Oost-Limburg, 3600 Genk, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liesbet","family":"De Baets","sequence":"additional","affiliation":[{"name":"Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Physiology and Anatomy, Vrije Universiteit Brussel, 1050 Brussel, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jesse","family":"Davis","sequence":"additional","affiliation":[{"name":"Declarative Languages and Artificial Intelligence Group, Department of Computer Science, KU Leuven, 3001 Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7611-3747","authenticated-orcid":false,"given":"Ilse","family":"Jonkers","sequence":"additional","affiliation":[{"name":"Human Movement Biomechanics Research Group, Department of Movement Sciences, KU Leuven, 3001 Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5461-947X","authenticated-orcid":false,"given":"Annick","family":"Timmermans","sequence":"additional","affiliation":[{"name":"REVAL Rehabilitation Research, Hasselt University, 3590 Diepenbeek, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6158-9483","authenticated-orcid":false,"given":"Benedicte","family":"Vanwanseele","sequence":"additional","affiliation":[{"name":"Human Movement Biomechanics Research Group, Department of Movement Sciences, KU Leuven, 3001 Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,12]]},"reference":[{"key":"ref_1","first-page":"646","article-title":"Burden of major musculoskeletal conditions","volume":"81","author":"Woolf","year":"2003","journal-title":"Bull. 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