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Clinical evaluation of a mobile sensor-based gait analysis method for outcome measurement after knee arthroplasty

  • Clinical scores and motion-capturing gait analysis are today’s gold standard for outcome measurement after knee arthroplasty, although they are criticized for bias and their ability to reflect patients’ actual quality of life has been questioned. In this context, mobile gait analysis systems have been introduced to overcome some of these limitations. This study used a previously developed mobile gait analysis system comprising three inertial sensor units to evaluate daily activities and sports. The sensors were taped to the lumbosacral junction and the thigh and shank of the affected limb. The annotated raw data was evaluated using our validated proprietary software. Six patients undergoing knee arthroplasty were examined the day before and 12 months after surgery. All patients reported a satisfactory outcome, although four patients still had limitations in their desired activities. In this context, feasible running speed demonstrated a good correlation with reported impairments in sports-related activities. Notably, knee flexion angle while descending stairs and the ability to stop abruptly when running exhibited good correlation with the clinical stability and proprioception of the knee. Moreover, fatigue effects were displayed in some patients. The introduced system appears to be suitable for outcome measurement after knee arthroplasty and has the potential to overcome some of the limitations of stationary gait labs while gathering additional meaningful parameters regarding the force limits of the knee.

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Author:Tilman Calliess, Raphael Bocklage, Roman Karkosch, Michael MarschollekGND, Henning Windhagen, Mareike SchulzeGND
DOI original:https://doi.org/10.3390/s140915953
Parent Title (English):sensors
Document Type:Article
Year of Completion:2014
Publishing Institution:Hochschule Hannover
Release Date:2017/07/25
Tag:outcome measurement; sensor-based mobile gait analysis; sports ability; total knee arthroplasty
First Page:15953
Last Page:15964
Link to catalogue:1751865762
Institutes:Fakultät III - Medien, Information und Design
DDC classes:610 Medizin, Gesundheit
Licence (German):License LogoCreative Commons - Namensnennung 3.0