the shoulder joint is made up of which articular surfaces
Fig 1.0 â The articulating surfaces of the shoulder joint. The shoulder joint is formed by the articulation of the head of the humerus with the glenoid cavity (or fossa) of the scapula. This gives rise to the alternate name for the shoulder joint â the glenohumeral joint. Type of joint â It is a ball and socket joint. 2  Bony surfaces â Shallow glenoid cavity and large humeral head â there is a 1:4 disproportion in surfaces. 3  A commonly used analogy is the golf ball and tee. 4  Laxity of the joint capsule.