Reaching Training Based on Robotic Hybrid Assistance for Stroke Patients ( RETRAINER-S2 )

In the researchers' words

Stroke is the third most common cause of death and the main cause of acquired adult disability in high-income countries. The most common deficit after stroke is motor impairment of the contralateral arm, with more than 80% of stroke survivors experiencing this condition in the acute phase, and only half regaining some useful upper limb function after six months. Within the European project RETRAINER (grant agreement No 644721), the consortium developed a platform for the rehabilitation of the upper limb after stroke, which combines a passive forearm-hand orthosis for hand-wrist motion stabilization, selective fingers constraining and grasp movement facilitation, Functional Electrical Stimulation (FES) of the extrinsic hand flexor muscles and of the extrinsic hand extensor muscles, interactive objects, and voluntary effort. The system also provides a graphical user interface which helps the therapist set the training session and save the training data and parameters, and provides the subject a visual feedback about his/her active involvement in the exercise. The training consists of the execution of a series of exercises involving the affected arm during daily life activities. Typical exercises include controlled wrist flexion and extension, controlled fingers flexion and extension, anterior reaching and grasping on a plane or in the space, moving an object on a plane or in…