Shoulder

Normal Anatomy of the Shoulder Joint

The shoulder is the most flexible joint in the body making it the most susceptible to instability and injury. It is a 'ball-and-socket' joint. A ‘ball' at the top of the upper arm bone, humerus, fits neatly into a 'socket’, called the glenoid, which is part of the shoulder blade, scapula.

The shoulder joint is made up several bones and soft tissues. It has three bones, the collarbone (clavicle), scapula, and humerus.

  • the American Academy of Orthopaedic Surgeons
  • Mid America Orthopaedic Association
  • American Orthopaedic Society for Sports Medicine
  • American Association of Nurse Anesthetists
  • A Nation in Motion