Robot-based Wrist Rehabilitation in Orthopaedics: Efficacy and Comparison With Traditional Methods

The WRISTBOT is a fully backdrivable manipulandum that allows for movements along its 3 Degrees of Freedom (DoFs) in a human-like Range Of Motion (ROM) of the wrist: 62° flexion/extension (FE), -40°/+45° in ulnar/radial deviation (RUD), and 60° pronation/supination (PS). In addition, the robot permits motions along planes that involve combined multi-DoFs movements. Mechanically, the robot was developed to have low values of inertia, emulating the fluency of natural movements. Each DOF is measured by high resolution incremental encoders and actuated by one brushless motor or two in case of the RUD planes, providing both gravity compensation and continuous torque values necessary to manipulate the human wrist joints. Depending on the torques exerted, the device can be used in either active or assistive/passive modality. The system is integrated with a Virtual Reality environment (VR), useful to provide a visual feedback to the user while he/she is requested to complete the tasks.

Passive, active and assisted mobilization

Exercise with elastic bands or weights, exercise of manipulation and dexterity, simulation of daily life activities supervised by the physiotherapist