Basic Anatomy of Shoulder
The shoulder is a ball and socket joint. It is made up of three bones: the upper arm bone (humerus), wing bone (scapula) and collarbone (clavicle).
The shoulder ball fits into the small socket (glenoid) The glenoid is surrounded by a soft cartilage lip (labrum), which deepens the socket.
The upper part of the [...]

continue reading.....