The common clinical causes of contusions are mainly the following: i. Patients who fall accidentally during strenuous exercise can cause contusions of the soft tissues of the skin. If the patient is moving faster, the contusion is more extensive and serious, and the recovery time takes 1-2 weeks after healing for a period of time. If the patient moves more slowly and the contusion caused by the fall is smaller in scope, the contusion can generally heal completely after 3-5 days. Second, contusions at the finger joints, mostly seen in repeated wear and tear of the finger joints, can be accompanied by nerve fiber damage and the formation of tendon sheath cysts. If the volume of the tendon sheath cyst is small, it does not affect the finger joint activities can be closely observed. If the size of the tendon sheath cyst is larger, affecting the finger joints and accompanied by pain, surgical removal can be considered.