This issue of Hand Clinics, guest edited by Dr. Joshua Adkinson, will cover several import aspects of the Management of Spastic Conditions of the Upper Extremity. At the invitation of consulting editor Dr. Kevin Chung, Dr. Adkinson put together a comprehensive issue, which covers: Etiologies; Assessment measures and motion analysis; Non-surgical treatment options; Surgical management of spasticity of the thumb and fingers, wrist and forearm, elbow, and shoulder; Management of spastic upper extremity joint contractures; Technical pearls of tendon transfers; Selective neurotomy; Neurosurgical management; Outcomes after surgical treatment; The future of upper extremity spasticity management; and Management of spinal cord injury-induced upper limb spasticity, among others.