- Title
- Wearable inertial sensors and pressure MAT detect risk factors associated with ACL graft failure that are not possible with traditional return to sport assessments
- Creator
- Dan, Michael J.; Lun, Kimberly Kai; Dan, Luke; Efird, Jimmy; Pelletier, Matthew; Broe, David; Walsh, William R.
- Relation
- BMJ Open Sport and Exercise Medicine Vol. 5, Issue 1, no. e000557
- Publisher Link
- http://dx.doi.org/10.1136/bmjsem-2019-000557
- Publisher
- BMJ Group
- Resource Type
- journal article
- Date
- 2019
- Description
- Introduction: Anterior cruciate ligament reconstruction (ACLR) is associated with poor return to sport and high graft re-rupture rates. This study explored the use of a wearable inertial sensor (ViMove) that incorporates an accelerometer and gyroscope, and MatScan pressure sensing mat (TekScan, South Boston, Massachusetts, USA) to provide objective return-to-sport measures. Methods: Three cohorts' ACLR patients, non-athletic controls and elite athletes (Australian seven's rugby Olympic Gold medallist). Patients performed biometric and functional tests (thigh circumference and triple hop) and the ViMove knee module (consisting of single and double leg squats, hops and box drops) for lower limb alignment assessment, concurrently with force plate. Results: Elite athletes had less varus/valgus (VV) movement during ViMove exercises compared with the ACLR cohort, who in turn had less VV malalignment than controls. When analysing side-to-side differences, single leg squats and box drop were asymmetrical in the ACL group, with greater malalignment in the reconstructed leg (p<0.05). Subgroup analysis failed to differentiate who passed or failed current return to sport assessment. TekScan pressure plate detected differences in double leg landing and flight time while hopping not detected with ViMove, suggesting ACL patients compensate by offloading the reconstructed leg to improve coronal alignment during double leg activity. Conclusion: The inertial sensor detected differences in motion for patients following ACLR, which are known to be associated with graft rupture and were not detected with functional return to sport testing. Coupling the device with data from a pressure plate provides a powerful assessment tool detecting alignment differences known to be associate with graft failure only previously detected in formal gait analysis.
- Subject
- wearable inertial sensors; risk factor; anterior cruciate ligament reconstruction (ACLR); sport assessments
- Identifier
- http://hdl.handle.net/1959.13/1455217
- Identifier
- uon:45064
- Identifier
- ISSN:2055-7647
- Rights
- © Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.
- Language
- eng
- Full Text
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