If the thumb is simply twisted to the tendon, it is usually a soft tissue injury, including muscle tendon strain, this situation if the symptoms are not serious, through the external application of traditional Chinese medicine or local cold compresses, rest, braking, about 2 weeks can usually recover. But thumb tendon injury may cause tendon rupture, this situation is easy to miss the diagnosis, so you need to go to the hospital to find a professional doctor to check, do the relevant examination. If the tendon is damaged there is a possibility that it may need to be immobilized in a straightened position, or it may need to be repaired surgically. In addition, the position of the thumb may be contused, resulting in a fracture of the base or distal end of the thumb. If the fracture is not displaced, it is easy to miss the diagnosis simply because of the pain, and the undisplaced fracture may easily become a displaced fracture during the later activities, so it is recommended to go to the hospital to consult the doctor after the injury to get treatment.