The reasons why muscles and bones are easily injured include traumatic infection, long-term musculoskeletal strain, and degenerative lesions. 1. Traumatic infection: some patients are injured accidentally in life, which is likely to cause muscle and bone pain or localized swelling and other symptoms. In particular, external impact or fall can lead to damage to body tissues and even localized edema. In more serious cases, muscle and bone pain or localized restrictions can occur. If left untreated for a long period of time, then the tendons and bones are prone to injury. 2. Long-term musculoskeletal strain: there are some people who have been engaged in physical labor for a long time, which can also cause excessive stress on the waist and back, resulting in localized musculoskeletal strain, leading to varying degrees of musculoskeletal pain, swelling and other symptoms of the affected area. Over time, this will lead to easy injury to the tendons and bones. 3. Degenerative lesions: with age, the elderly own immunity has declined, the body organs appear degenerative lesions, will also lead to signs of gradual degeneration of the tendons and bones, resulting in tendons and bones easily injured. Especially after the cold, the symptoms of tendon pain will be more obvious. However, in either case, the patient should go to the local hospital in time to find out the cause of the injury and treat it accordingly. Do not delay your condition due to your own judgment.