Clavicle & Pectoral Girdle

The pectoral girdle (clavicle + scapula) is the only bony link between the upper limb and the axial skeleton — and that single strut is the clavicle. CLAVICLE — KEY FACTS • First bone to ossify (5th–6th intra-uterine week) and the last epiphysis (medial) to fuse (~25 yrs). • Ossifies in membrane (the only long bone to do so), but its ends are cartilaginous. • Double curve: convex forward medial…