Characterizing knee loading asymmetry in individuals following anterior cruciate ligament reconstruction using inertial sensors.
Gait Posture
; 49: 114-119, 2016 09.
Article
en En
| MEDLINE
| ID: mdl-27395452
ABSTRACT
Limitations in the ability to identify knee extensor loading deficits during gait in individuals following anterior cruciate ligament reconstruction (ACLr) may underlie their persistence. A recent study suggested that shank angular velocity, directly output from inertial sensors, differed during gait between individuals post-ACLr and controls. However, it is not clear if this kinematic variable relates to knee moments calculated using joint kinematics and ground reaction forces. Heel rocker mechanics during loading response of gait, characterized by rapid shank rotation, require knee extensor control. Measures of shank angular velocity may be reflective of knee moments. This study investigated the relationship between shank angular velocity and knee extensor moment during gait in individuals (n=19) 96.7±16.8days post-ACLr. Gait was assessed concurrently using inertial sensors and a marker-based motion system with force platforms. Peak shank angular velocity and knee extensor moment were strongly correlated (r=0.75, p<0.001) and between limb ratios of angular velocity predicted between limb ratios of extensor moment (r(2)=0.57, p<0.001) in the absence of between limb differences in spatiotemporal gait parameters. The strength of these relationships indicate that shank kinematic data offer meaningful information regarding knee loading and provide a potential alternative to full motion analysis systems for identification of altered knee loading following ACLr.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Reconstrucción del Ligamento Cruzado Anterior
/
Marcha
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Articulación de la Rodilla
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Monitoreo Fisiológico
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Gait Posture
Asunto de la revista:
ORTOPEDIA
Año:
2016
Tipo del documento:
Article