Quantification of Motor Compensation Following Biomechanical, Proprioceptive and Physiological Alterations Post-lower Limb Amputation.

"Amputees and controls will be equipped with measurement sensors to record spatio-temporal, kinetic, kinematic, pressure, electromyographic and physiological parameters of gait in the movement analysis laboratory (GRAIL System).~16 Anatolog FSR sensors will be installed in the amputee population (transtibial, transfemoral on the medial, lateral, anterior and posterior parts of the stump, 4 per side, aligned in the proximal/distal axis. The Anatolog sensors have a sampling frequency of 100Hz. Electromyographic data recording is performed by setting up a number of EMGs depending on the healthy population or the level of amputation. Surface electromyography (sEMG) signals will be recorded from 10 muscles on each lower limb for control subjects and transtibial amputees"

Energy consumption (VO2), will be performed using the VO2 Master Pro (VO2 Master Health Sensors Inc., Vernon, British Columbia, CA). Each participant will wear a face mask connected to the VO2 Master, which will measure oxygen consumption in real time during the assessment. The mask will be adjusted to prevent air leakage and ensure accurate measurements.

For amputees, the joint above the amputation will be measured due to the presence of the proximal insertions of the bi-articular muscles and the absence of their distal insertion (i.e., knee joint for transtibial amputees and hip joint for transfemoral amputees).