This paper presents the proof-of-concept of a home-based gamified wrist rehabilitation training system for children with cerebral palsy (CCP). We describe the user-centered design process of this system, which is composed of a wrist-worn inertial measurement unit (IMU) and a tangible device with an embedded IMU. The system employs a quaternion-based algorithm for automatic real-time estimation of the range of motion (RoM) covered by adduction/abduction and flexion/extension motions of the wrist. Experimental validation shows that the RoM can be determined with sufficient accuracy to control a game and that the algorithm is applicable in CCP. A serious game, which uses the presented algorithm and enables feedback as well as motivating stimuli, is implemented and evaluated by physiotherapists.

Children with unilateral cerebral palsy (CCP) benefit from intensive training with the affected side. The SHArKi project strives for a motivational support system, using wristbands with inertial measurements units (IMU) to measure arm function, providing biofeedback as well as motivating stimuli. To consider finger and wrist movements as well, this paper covers concepts for a tangible solution and its first implementation including the gamification development. Finalizations of the demonstrator, an overall functional test as well as concluding feedback from CCP are pending.