A sprained tendon in the upper back usually hurts for about two weeks, which is the average case, and after such a sprain, it is important to do relevant treatments in time, such as taking bed rest in time and using ointments with the effect of activating blood circulation and removing blood stasis here. If the sprain is very severe and is not treated accordingly, the recovery time for this type of injury may be much longer. In some cases, the pain may still be noticeable after four weeks, or even recurring and unrelenting. Sprains of the tendons in this area of the back are often the result of strenuous activity, activities involving the torso too suddenly, which in turn leads to the muscles being strained, or spasm, which can lead to back pain and stiffness, and unfavorable mobility. A similar mechanism may occur if heavy lifting is performed.