Study of the Sensitivity to Change of a Bimanual 3D Analysis Protocol for the Assessment of Upper Limb Movement in Children With Cerebral Palsy Before and After Therapies

Cerebral Palsy is the most common cause of motor disability in children. It can lead to a deficit of the upper limb which alters the realization of daily activities, in particular in bimanual situations, and eventually leads to a decrease in their participation. Three-dimensional (3D) movement analysis is a tool that provides an accurate and objective measurement of movement. This technology allows us to understand and characterize movement anomalies in order to guide and adapt therapies to the upper limb. The majority of 3D upper limb analysis protocols used to measure the effect of interventions, such as botulinum toxin injections indicated for the treatment of spasticity or other innovative rehabilitative therapies, are unimanual and do not study bimanual function, which is more representative of the actual use of the upper limbs in daily life. Recently, a 3D bimanual analysis protocol called "Be An Airplane Pilot" (BE-API), taking place in an innovative play context, has been developed and validated in PC children. The 2nd version of the protocol (BE API 2.0) also allowed the exploration of new parameters in a bimanual situation such as the fluidity and the trajectory of the movement. In order to determine the interest of the BE API 2.0 protocol in routine clinical evaluation of the upper limbs, its sensitivity to change, i.e. its capacity to detect modifications caused by a therapy on the movements of the upper limbs is necessary (e.g.: Hand and Arm Bimanual Intensive Therapy Including Lower Extremity (HABIT ILE), botulinum toxin injections).