This document discusses joint mobility and range of motion exercises. It defines types of range of motion including active, passive, and active-assisted. It describes causes of limited mobility like injury, immobilization, or lifestyle. The principles, preparation, and techniques for range of motion exercises are outlined, including positioning, monitoring the patient's response, and moving joints smoothly through their pain-free range. Guidelines are provided for applying range of motion exercises to individual joints. The goals are to maintain joint mobility and function while avoiding further injury.