Middle school students' shoulder pain is caused by studying for a long time and keeping a posture for a long time. Long-term inactivity leads to scapular dislocation and soft tissue pain. When the shoulder is sore, you can do shoulder exercises or incubate soft bonesetting conditioning to solve it. It is recommended to get up every half hour to move your limbs and do stretching exercises. In addition, don't carry your schoolbag on one shoulder for a long time. Better carry it on your shoulder. Massage your shoulders and neck properly every day to reduce the time spent using the computer. Using the mouse for a long time will also cause the right arm, working at a desk for a long time or using the computer to make the shoulders work for a long time, which will lead to a long-term stalemate in the joints and make the shoulders feel sore.

Pain in the upper corner of the scapula was caused by levator scapulae's injury. Playing with your head down or working at your desk for a long time will lead to levator scapulae's sustained elongation and injury. However, the long-term tension of pectoralis minor muscle, pulling the scapula forward, will also cause the passive tension of levator scapulae to form injury. Many people describe scapular pain, in fact, it is the strain of this part, which mostly occurs in barbers, teachers, laboratory workers, mainly those who work with their arms up. Being in this position for a long time makes the muscles in the infraspinatus tense. The scapula is an irregular bone of human skeleton, which is triangular and attached to the posterior chest wall, between 2 and 7 ribs. Generally divided into three sides, triangle and two sides. The transverse ridge of the back becomes the scapular ridge, which is divided into two nests, namely the supraspinatus fossa and the infraspinatus fossa.

Scapular groove inflammation, there is a groove on the back of scapula, because sedentary or strain, it is easy to cause aseptic inflammation, and adhesion will occur after a long time, resulting in pain. This kind of pain is also mixed with pain, discomfort and oppression, such as heavy objects, which always make people feel more comfortable. Patients with bone tuberculosis, pulmonary tuberculosis and lung cancer can all cause scapular pain, which is somewhat different from scapulohumeral periarthritis. Besides scapular pain, this kind of disease is accompanied by fever and cough. But there was no significant change in pain at night and during the day. Think of this disease as periarthritis of shoulder.