A pilot case series for concurrent validation of inertial measurement units to motion capture in individuals who use unilateral lower-limb prostheses

Simple item page
dc.creatorFinco, M. G.
dc.creatorPatterson, Rita M.
dc.creatorMoudy, Sarah C.
dc.date.accessioned2023-07-17T20:03:11Z
dc.date.available2023-07-17T20:03:11Z
dc.date.issued2023-07-13
dc.description.abstractINTRODUCTION: Inertial measurement units (IMUs) may be viable options to collect gait data in clinics. This study compared IMU to motion capture data in individuals who use unilateral lower-limb prostheses. METHODS: Participants walked with lower-body IMUs and reflective markers in a motion analysis space. Sagittal plane hip, knee, and ankle waveforms were extracted for the entire gait cycle. Discrete points of peak flexion, peak extension, and range of motion were extracted from the waveforms. Stance times were also extracted to assess the IMU software's accuracy at detecting gait events. IMU and motion capture-derived data were compared using absolute differences and root mean square error (RMSE). RESULTS: Five individuals (n = 3 transtibial; n = 2 transfemoral) participated. IMU prosthetic limb data was similar to motion capture (RMSE: waveform </=4.65 degrees ; discrete point </=9.04 degrees ; stance </=0.03s). However, one transfemoral participant had larger differences at the microprocessor knee joint (RMSE: waveform </=15.64 degrees ; discrete </=29.21 degrees ) from IMU magnetometer interference. Intact limbs tended to have minimal differences between IMU and motion capture data (RMSE: waveform </=6.33 degrees ; discrete </=9.87 degrees ; stance </=0.04s). CONCLUSION: Findings from this pilot study suggest IMUs have the potential to collect data similar to motion capture systems in sagittal plane kinematics and stance time.
dc.description.sponsorshipThe author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by an American Orthotics and Prosthetics Association research award administered by the Center for Orthotic and Prosthetic Learning and Outcomes/Evidence-Based Practice. MGF was supported by the National Institutes of Health/National Institute on Aging (T32 AG020494) and the Institute for Healthy Aging.
dc.identifier.citationFinco, M. G., Patterson, R. M., & Moudy, S. C. (2023). A pilot case series for concurrent validation of inertial measurement units to motion capture in individuals who use unilateral lower-limb prostheses. Journal of rehabilitation and assistive technologies engineering, 10, 20556683231182322. https://doi.org/10.1177/20556683231182322
dc.identifier.issn2055-6683
dc.identifier.urihttps://hdl.handle.net/20.500.12503/32380
dc.identifier.volume10
dc.publisherSage Publications
dc.relation.urihttps://doi.org/10.1177/20556683231182322
dc.rights.holder© The Author(s) 2023
dc.rights.licenseAttribution-NonCommercial 4.0 International (CC BY-NC 4.0)
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.sourceJournal of Rehabilitation and Assistive Technologies Engineering
dc.subjectamputee
dc.subjectbiomechanics
dc.subjectkinematic
dc.subjectprosthesis
dc.subjectvalidation
dc.titleA pilot case series for concurrent validation of inertial measurement units to motion capture in individuals who use unilateral lower-limb prostheses
dc.typetext
dc.type.materialArticle

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
full text article
Size:
1.26 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Publications -- Rita M. Patterson