Your shoulder joint is made up of bones, tendons, muscles, and ligaments and can perform a greater range of motion than any other joint. Bones of the shoulder joint include:
- Clavicle or the collarbone
- Scapula or the shoulder blade
- Humerus or the upper arm bone
The round head of the upper arm bone, called the ball, fits into a shallow socket in the shoulder blade. The clavicle attaches your shoulder to the rib cage and also connects with the shoulder blade at the acromioclavicular joint.
Damage to the shoulder joint may cause pain, weakness, and stiffness, resulting in problems in the movement of the arms and shoulder.
A shoulder replacement may be required depending on the size and location of the damage, your age, the duration of symptoms, and the limitation of the range of motion.