Upper limb

Articular cartilage of shoulder girdle (Humeral head, Glenoid, AC, SC)

Cartilagines articulares cinguli pectoralis et humeri

Origin

Hyaline cartilage on humeral head, glenoid cavity, acromioclavicular, and sternoclavicular joints

Insertion

Opposing articular surfaces of glenohumeral, AC, and SC joints

Function

Provides smooth, low-friction gliding and distributes compressive forces across shoulder articulations

Innervation

Avascular and aneural

Movement & chain

Enables multi-planar circumduction and rotational mobility

Palpation

Not palpated directly

Clinical

Glenohumeral osteoarthritis (omarthrosis) leading to stiffness and crepitus; managed conservatively or via total/reverse shoulder arthroplasty.

Segmental innervation

C5–C6

In clinical practice

Rotator cuff strengthening, joint protection, and rehabilitation following total/reverse shoulder arthroplasty

Region in the model

Upper limb