There are many reasons for the elderly to have a high shoulder and a low shoulder. The more common ones in clinical practice are as follows: 1. In itself, it is because of severe osteoporosis, the height of the whole spine has changed, and even a hunchback has appeared, and at this time it can be traction causing a high shoulder and a low shoulder. 2. Having osteoporosis at the same time causes severe pain in the spinal area, and because pain is self-protective, traction on the shoulder joint can also cause a high shoulder and a low shoulder. 3. It is very common for elderly people to have underlying lesions of frozen shoulder, and prolonged frozen shoulder can lead to muscle atrophy and limited range of motion around the shoulder joint, which can also cause the shoulder to be one high and one low. 4. If you have severe cervical spondylosis, which leads to deformed changes in the appearance of the cervical spine and muscle pain, pulling on the shoulder joint can also cause the two sides to be different in height. Therefore, if you want to determine what the cause is, you have to make a comprehensive judgment based on the corresponding accessory symptoms and other examinations.