{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T10:49:41Z","timestamp":1771930181587,"version":"3.50.1"},"reference-count":38,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2023,7,18]],"date-time":"2023-07-18T00:00:00Z","timestamp":1689638400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Chemnitz University of Technology"},{"name":"State Ministry of Science, Culture and Tourism (SMWK)"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The soft tissues of residual limb amputees are subject to large volume fluctuations over the course of a day. Volume fluctuations in residual limbs can lead to local pressure marks, causing discomfort, pain and rejection of prostheses. Existing methods for measuring interface stress encounter several limitations. A major problem is that the measurement instrumentation is applied in the sensitive interface between the prosthesis and residual limb. This paper presents the principle investigation of a non-intrusive technique to evaluate the fit of orthopaedic prosthesis sockets in transfemoral amputees based on experimentally obtained vibrational data. The proposed approach is based on changes in the dynamical behaviour detectable at the outer surface of prostheses; thus, the described interface is not affected. Based on the experimental investigations shown and the derived results, it can be concluded that structural dynamic measurements are a promising non-intrusive technique to evaluate the fit of orthopaedic prosthesis sockets in transfemoral amputee patients. The obtained resonance frequency changes of 2% are a good indicator of successful applicabilityas these changes can be detected without the need for complex measurement devices.<\/jats:p>","DOI":"10.3390\/s23146500","type":"journal-article","created":{"date-parts":[[2023,7,19]],"date-time":"2023-07-19T01:02:23Z","timestamp":1689728543000},"page":"6500","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Approach for Non-Intrusive Detection of the Fit of Orthopaedic Devices Based on Vibrational Data"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4950-8721","authenticated-orcid":false,"given":"Constanze","family":"Neupetsch","sequence":"first","affiliation":[{"name":"Fraunhofer Institute for Machine Tools and Forming Technology, 09126 Chemnitz, Germany"},{"name":"Professorship Adaptronics and Lightweight Design, Faculty of Mechanical Engineering, Chemnitz University of Technology, 09111 Chemnitz, Germany"},{"name":"Department of Orthopaedic, Trauma and Plastic Surgery, University of Leipzig Medical Center, 04103 Leipzig, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Hensel","sequence":"additional","affiliation":[{"name":"Fraunhofer Institute for Machine Tools and Forming Technology, 09126 Chemnitz, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andreas","family":"Heinke","sequence":"additional","affiliation":[{"name":"Institute of Biomedical Engineering, Dresden University of Technology, 01307 Dresden, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tom","family":"Stapf","sequence":"additional","affiliation":[{"name":"Fraunhofer Institute for Machine Tools and Forming Technology, 09126 Chemnitz, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nico","family":"Stecher","sequence":"additional","affiliation":[{"name":"Institute of Biomedical Engineering, Dresden University of Technology, 01307 Dresden, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hagen","family":"Malberg","sequence":"additional","affiliation":[{"name":"Institute of Biomedical Engineering, Dresden University of Technology, 01307 Dresden, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0375-0232","authenticated-orcid":false,"given":"Christoph-Eckhard","family":"Heyde","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic, Trauma and Plastic Surgery, University of Leipzig Medical Center, 04103 Leipzig, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8504-4584","authenticated-orcid":false,"given":"Welf-Guntram","family":"Drossel","sequence":"additional","affiliation":[{"name":"Fraunhofer Institute for Machine Tools and Forming Technology, 09126 Chemnitz, Germany"},{"name":"Professorship Adaptronics and Lightweight Design, Faculty of Mechanical Engineering, Chemnitz University of Technology, 09111 Chemnitz, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"80","DOI":"10.1590\/1516-3180.2014.1322572","article-title":"Adaptation to prostheses among patients with major lower-limb amputations and its association with sociodemographic and clinical data","volume":"132","author":"Nunes","year":"2014","journal-title":"Sao Paulo Med. 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