APSIC: Training and fitting amputees during situations of daily living

Whole limb push-off work in people with transtibial amputation during slope ascent

“…Gait speed was averaged on three to five gait cycles in each situation. From the positions of 54 markers, anatomical frames were created and kinematics of the whole body were obtained as described in (Pillet et al 2014). A personalized volumetric model of the body was created to compute, in each local body segment reference frame, the position of the center of gravity (Pillet et al 2014).…”

“…From the positions of 54 markers, anatomical frames were created and kinematics of the whole body were obtained as described in (Pillet et al 2014). A personalized volumetric model of the body was created to compute, in each local body segment reference frame, the position of the center of gravity (Pillet et al 2014). Combined with the anatomical frames kinematics, position and velocity (by derivation) of the body center of mass were obtained in the global reference frame.…”

Evolution of vaulting strategy during locomotion of individuals with transfemoral amputation on slopes and cross-slopes compared to level walking

“…All subjects followed the same protocol. Subjects were equipped with a set of 54 reflective markers placed on landmarks of the whole body (Pillet et al, 2014). 3D position of these markers during motion was captured with an optoelectronic system (Vicon 8i, 100 Hz, Oxford Metrics, Oxford, UK).…”

“…A 13 segment model was created (foots, shanks, thighs, pelvis, trunk, head, arms, lower-arms). Anatomical frames were defined for each segment of the model (Pillet et al, 2014). Spatiotemporal parameters and lower limb joint kinematics and kinetics in the frontal, transverse and sagittal planes were computed as described in Pillet et al (2014) in each walking situation (flat surface, downstream on cross-slopes, gentle slope ascent, and steep slope ascent).…”

“…Anatomical frames were defined for each segment of the model (Pillet et al, 2014). Spatiotemporal parameters and lower limb joint kinematics and kinetics in the frontal, transverse and sagittal planes were computed as described in Pillet et al (2014) in each walking situation (flat surface, downstream on cross-slopes, gentle slope ascent, and steep slope ascent). Particularly, ankle power in the sagittal plane was defined as the product of ankle moment and ankle angular velocity in the sagittal plane, and normalized by body mass.…”