• What is the cause of pain in osteoarthritis? I. Increased wear down there is a friction of the bone this causes pain. II. Increased stretching of tendon and ligaments this is also lead pain. III. swelling in the joint leading to stretching of capsule, IV. Stagnation of blood in the bone causes pain due to increase in vascular pressure. V. Osteophyte on the side of the bone which causes stretching of the ligament. VI. Irritation of the tendon and ligaments leading to pain VII. Loose bodies in joint sometime come in between two bones. Ashwini Multispeciality Hospital treat for the back pain, neck pain, knee pain , bone fractures , joint replacement surgery, spine surgery, laproscopy etc.