Other common orthopedic pain: Acute pain is distinct from chronic pain and is relatively more sharp and severe, usually related to external forces in the skeletal muscle system, nervous system or other injuries, such as acute pain caused by orthopedic surgery or motor system trauma. For example, pain after hip joint replacement, accidental trauma-such as fracture, recovery pain after surgical treatment. Chronic pain is mainly affected by chronic degenerative diseases or caused by nerve injury, such as osteoarthritis, back pain, foot and ankle pain, shoulder, elbow and hand pain, spinal pain, tendonitis and so on.