The scapula is an irregular triangular flat bone located on the lateral side of the posterior thorax, between the second and seventh ribs, which is the four seventh ribs of the lower corner of the scapula flat against, and the scapula has the function of protecting the organs of the thoracic cavity. The scapula has the scapular glenoid and the humerus of the upper limb, which together form the shoulder joint, while the shoulder peak of the scapula and the clavicle together form the shoulder lock joint, which plays the role of maintaining the shoulder joint to lift the shoulder and the back and forth function. Moreover, the scapula is also the connecting bone between the trunk bone and the upper limb. After suffering a posterior thoracic wall injury, it is easy to cause a fracture of the scapula, resulting in significant swelling and pain in the scapula, and the pain will be significantly increased when lifting the shoulder.