Some urban women always have a lot of sundries in their bags, at least four or five pounds, some even seven or eight pounds. Let one shoulder carry such a heavy load, it is simply “torture” of the shoulder. Shoulder satchel, shoulders bear the force is asymmetric, between the human head and shoulder, bearing the head force is mainly cervical vertebrae, pressed side of the joint is squeezed, while the other side is traction. If you often carry a large bag, the spine will always be under pressure. When the backpack is too heavy, people involuntarily tilt to the other side, in order to maintain balance, they will subconsciously lift it up, and the muscles of the shoulders are always under tension. The neck and cervical vertebrae are in a state of lateral bending, and this abnormal state of stress lasts too long, and inflammation will gradually develop between the joints, and in some cases, rotator cuff injury will occur. Rotator cuff injury is caused by what If you carry a shoulder bag too heavy and have shoulder pain for a long time, even when you sleep, you may have another very common disease – rotator cuff injury. Rotator cuff injury belongs to the category of sports medicine. The rotator cuff is a group of four muscles attached to the shoulder joint that protect the shoulder joint and are responsible for the movement of the shoulder joint. Acute injuries are common when lifting heavy objects, supporting the shoulder during a fall, and being pulled by external forces; chronic strain injuries are more common in older people who regularly participate in sports. If you carry a heavy shoulder bag for a long time, you will be prone to rotator cuff injury. Don’t treat rotator cuff injury as frozen shoulder It is important to note that it should be distinguished from frozen shoulder and not treated as frozen shoulder. Frozen shoulder is a type of adhesive capsulitis that causes stiffness in the glenohumeral joint. It is characterized by pain around the shoulder joint, reduced active and passive mobility of the shoulder joint in all directions, and no significant abnormalities on imaging except for a decrease in bone mass. It is also known as “fifty shoulder”, which occurs in people around 50 years old. It is also known as frozen shoulder and frozen shoulder. It is a self-limiting disease, which means that it can be treated conservatively or some patients will heal on their own in six months to a year without treatment. If a rotator cuff tear is misdiagnosed as frozen shoulder and patients with rotator cuff tears or impingement are allowed to perform functional exercises such as “climbing the wall” or artificially pulling on the rotator cuff, it may cause the tear in the rotator cuff to increase or even aggravate the injury. It is best for patients with shoulder pain to seek a clear diagnosis from a professional sports medicine or shoulder surgeon before receiving the treatment that is right for them.