Pain may occur in any part of the body and has various causes. One of the possible causes is the inflammation in the joints caused by arthrosis/ erosion, bursitis or tendinitis.
Bursa plays the role of the joints lubricant between the bones and tendons and is filled with synovial fluid, essential for absorbing impact forces during movements. Its inflammation is very painful.
The tendon connects a muscle with the bone and has the role of transforming muscular contractions into the bones movements. It has solid, white-glazing structure and can have round or flat form. On the parts where it experience extreme frictional force, it is enforced by tendon sheath.