{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T19:05:50Z","timestamp":1789671950423,"version":"4.0.1"},"reference-count":40,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2024,12,3]],"date-time":"2024-12-03T00:00:00Z","timestamp":1733184000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["R01AR080708"],"award-info":[{"award-number":["R01AR080708"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Tibia shaft fractures are common lower extremity fractures that can require surgery and rehabilitation. However, patient recovery is often poor, partly due to clinicians\u2019 inability to monitor bone loading, which is critical to stimulating healing. We envision a future of patient care that includes at-home monitoring of tibia loading using pressure-sensing insoles. However, one issue is missing portions of daily loading due to limited insole wear time (e.g., not wearing shoes all day). Here, we introduce a method for overcoming this issue with a wrist-worn fitness tracker that can be worn all day. We developed a model to estimate tibia loading from fitness tracker data and evaluated its accuracy during 10-h remote data collections (N = 8). We found that a fitness tracker, with trained and calibrated models, could effectively supplement insole-based estimates of bone loading. Fitness tracker-based estimates of loading stimulus\u2014the minute-by-minute weighted impulse of tibia loading\u2014showed a strong fit relative to insole-based estimates (R2 = 0.74). However, insoles needed to be worn for a minimum amount of time for accurate estimates. We found daily loading stimulus errors less than 5% when insoles were worn at least 25% of the day. These findings suggest that a multi-sensor approach\u2014where insoles are worn intermittently and a fitness tracker is worn continuously throughout the day\u2014could be a viable strategy for long-term, remote monitoring of tibia loading in daily life.<\/jats:p>","DOI":"10.3390\/s24237717","type":"journal-article","created":{"date-parts":[[2024,12,4]],"date-time":"2024-12-04T06:38:25Z","timestamp":1733294305000},"page":"7717","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Using Fitness Tracker Data to Overcome Pressure Insole Wear Time Challenges for Remote Musculoskeletal Monitoring"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7296-7550","authenticated-orcid":false,"given":"Cameron A.","family":"Nurse","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37212, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katherine M.","family":"Rodzak","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37212, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7478-4317","authenticated-orcid":false,"given":"Peter","family":"Volgyesi","sequence":"additional","affiliation":[{"name":"Institute for Software Integrated Systems, Vanderbilt University, Nashville, TN 37212, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brian","family":"Noehren","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, University of Kentucky, Lexington, KY 40506, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karl E.","family":"Zelik","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37212, USA"},{"name":"Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA"},{"name":"Department of Physical Medicine and Rehabilitation, Vanderbilt University, Nashville, TN 37212, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Antonova, E., Le, T.K., Burge, R., and Mershon, J. 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