Shoulder blade

It is an even, flat, very thin bone that can be translucent at certain points. It forms the dorsal part of the shoulder girdle.

It has a triangular shape with two faces, three edges and three angles.

faces

Dorsal Face

  • Spine of the Scapula – Separates the supraspinatus and infraspinatus fossae
  • Acromion – Located at the end of the spine
  • Supraspinatus Fossa – It is concave and smooth, located above the spine
  • Infraspinous Fossa – It is concave and located below the spine

costal face

subscapularis fossa

edges

    Top Edge

      • Scapular Notch – Semicircular notch located on the lateral portion and formed by the base of the coracoid process
      • Coracoid Process – Thick, curved process near the neck of the scapula

        Side Edge

        Medial Edge

          angles

          Bottom Angle – Thick and rough

          Top Angle – Thin, smooth and rounded

          Side Angle – Is widened in a thick process. Enter the shoulder joint

          • Glenoid cavity – It is an excavation of the scapula that articulates with the humerus
          • Supraglenoid tubercle – Located above the glenoid cavity
          • Infra-Glenoid Tubercle – Located below the glenoid cavity


          The Scapula articulates with two bones: Humerus and Clavicle.


          Articulações da Escápula

          SCAPULA - PREVIOUS VIEW
           Escápula - Vista Anterior
          Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21 ed. Rio de Janeiro: Guanabara Koogan, 2000.
          SCAPULA - BACK VIEW
           Escápula - Vista Posterior
          Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21 ed. Rio de Janeiro: Guanabara Koogan, 2000.
          SCAPULA - SIDE VIEW
           Escápula - Vista Lateral
          Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21 ed. Rio de Janeiro: Guanabara Koogan, 2000.


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