hand muscle spasm in asian young man. unilateral hand deformity. abnormal fingers flexion

abnormal atrophies atrophy claw compressive contracture deformed deformities deformity disability disable finger fingers flexed flexion function hand hands health injury leprosy mononeuropathy muscle muscles nerve neuropathy palm palsy paralysis peripheral posture problem rigid rigidity sign spasm spasms spastic spasticity stroke ulnar unilateral volkmann weak