1. To determine if tendon surgery for the forearm, wrist and thumb deformities of UECP is more effective than Botulinum toxin injections or regular ongoing treatment at improving function and quality of life for children with UECP. Children who are candidates for tendon surgery will be prospectively randomized to one of three treatment groups: standard tendon surgery, a series of three Botulinum toxin injections over a period of 12 months, and regular ongoing treatment. Validated tests of cognition, function and quality of life with tests of stereognosis and range of motion will be administered before, during and after treatment in order to compare outcomes of the three treatment groups.