The simplest of these is the sub-Glenoid variety, in which the head rests on the long tendon of the triceps, where it arises from the axillary border of the scapula just below the Glenoid cavity.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
The empty Glenoid may sometimes be palpated from the axilla.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
In a few cases the condyle has been driven through the floor of the Glenoid cavity, causing fracture of the base of the skull.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson