The medical term for injured tendons is soft tissue injury, and depending on the extent of its injury department, mild can heal on its own, and severe injuries cannot heal on its own. Specific as follows. The soft tissue of human body generally includes skin, subcutaneous tissue, ligaments, joint capsules, muscles, tendons, synovial sacs, nerves, blood vessels and so on. Stretching for patients in daily life generally involves injuries to the skin, muscles, ligaments and other parts of the body. Mild soft tissue injury, that is, only manifested as localized swelling, mild pain, no activity limitation, 2 to 4 weeks of rest can generally heal by itself. Serious soft tissue injuries, such as the existence of muscle, ligament tears or disconnection, bleeding, swelling, severe pain, activity limitation, and even the corresponding parts of the fracture and so on, can not be self-healing, the need to go to the hospital in a timely manner to consult the treatment. If soft tissue injury is suspected and there are obvious symptoms, it is recommended to go to the hospital in time for early and regular treatment.