Abstract: A support cradle for supporting a person seated in a chair by cradling the upper legs of the person, and maintaining the legs in a desired passive restraint arranged so that if the person moves the hips or legs in an abnormal degree such as excessive hip flexion, hip adduction, hip internal rotation, hip extension, scissoring or the like, the cradle will restrain such movement. The cradle provides no restraint so long as normal sitting posture is maintained. The cradle is especially useful in treatment and management of patients with neurogenic movement disorders which manifest with spasticity and abnormal movement patterns such as with spinal cord injury or in cerebral palsy.