The document describes the anatomy of the scapula bone. It notes that the scapula is a large, triangular, flat bone located on the posterolateral aspect of the chest wall opposite ribs 2-7. The dorsal surface of the scapula is divided into two portions by its spine: the supraspinous fossa superiorly and infraspinous fossa inferiorly. It describes landmarks like the superior, inferior, and lateral angles. Key borders including the lateral, medial, and superior borders and their extensions are outlined. Muscle attachments and the shoulder and acromioclavicular joints are also mentioned. Pathologies such as fractures, winging of the scapula, and scapho

1. SCAPULA
Dr. Simi Prabhakaran
Assistant professor
SDM Hassan
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2. SCAPULA
• Large,triangular,flat bone
• Location : posterolateral
aspect of chest wall.
• Opp.2nd -7th Rib
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5. Costal surface
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6. Spine divided dorsal surface into 2
Upper : Supraspinous fossa
Lower : Infraspinous fossa
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9. Superior angle
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10. Inferior angle
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11. Lateral angle
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16. Lateral Border
• Thickest of all borders
• Extends :- lower part
of glenoid cavity to
inferior angle
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17. Medial Border
• Longest of all borders
• Extends :- superior
angle to inferior angle
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18. Superior Border
• Thinnest & shortest
• Extends :- superior
angle to
Suprascapular notch
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25. Posterior border / crest of spine
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26. Lower lip of crest of spine
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27. Upper lip of crest of spine
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29. Acromion process
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30. Coracoid process
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32. Muscle attachment
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36. Shoulder Joint Acromioclaviclar Joint
B/w the glenoid cavity
& the head of humerus
B/w the acromial process
& the lateral end of clavicle

37. Fracture of scapula
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38. winging of scapula
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40. • The term ‘winged scapula’ (also scapula
alata) is used when the muscles of the
scapula are too weak or paralyzed,
resulting in a limited ability to stabilize the
scapula. As a result, the medial border of
the scapula protrudes, like wings.
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41. Scaphoid scapula
• Developmental anomaly
• The medial border is concave.
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