The shoulder is a complex joint. It is capable of more motion than any other joint in the body. It is made up of three bones: your upper arm bone (humerus), your shoulder blade (scapula) and your collarbone (clavicle). More information can be found at orthoinfo.aaos.org
Any surgical or invasive procedure carries risks. Before proceeding, you should seek a second opinion from an appropriately qualified health practitioner.