Ossification centers of the pectoral girdle

Last revised by Assoc Prof Craig Hacking on 08 Aug 2022

Ossification centers of the pectoral girdle can be divided into each of the three bones that form it: clavicle, scapula and proximal humerus.

Ossification centers of the clavicle
  • lateral end: 5 weeks in utero
  • medial end: 15 years
Ossification centers of the scapula
  • body: 8 weeks in utero
  • coracoid process (two centers): 12-18 months
  • glenoid: 10-11 years
  • inferior angle: 14-20 years (puberty)
  • acromion (three centers): 14-20 years (puberty)
  • medial border: 14-20 years (puberty)
Ossification centers of the proximal humerus
  • diaphysis (shaft): 8 weeks in utero
  • head: 1-6 months
  • greater tubercle: 1 year
  • lesser tubercle: 3-5 years

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Cases and figures

  • Figure 1: scapular ossification centers (Gray's illustrations)
    Drag here to reorder.
  • Figure 2: humeral ossification centers (Gray's illustrations)
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