Upper Limb Muscle Strength Models for Patients With Motor Impairment.

The trial is a single-center prospective interventional study. Patients aged 18 to 85 years hospitalized in a French rehabilitation center for stroke, multiple sclerosis or traumatic tetraplegia and presenting a motor deficit ≤3/5 at the shoulder and elbow will be included. MVF measurements will be performed using an isokinetic ergometer during a single session. Concentric and eccentric MVF, as well as the forces generated during passive motion, will be measured in shoulder external-internal rotation and in elbow flexion-extension, in the seated position. The demographic, anthropometric and medical data required for the study will be extracted from medical records. Patients' residual muscle strength will be described and modeled. Explanatory factors for model quality will be determined.