| 4.5 ) Relations of the shoulder joint |
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| Crossectional view of Shoulder Joint |
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| Superior |
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 The tendon of supraspinatus(2) fuses with the capsule, and is separated from the secondary socket above by the subacromial bursa.
 Identify the stractures 1,3,4 and 5
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| Anterior . |
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The subtendinous bursa of subscapularis partly intervenes between the capsule and the tendon of subscapularis. More distant are the axillary structures which lie on the tendon of coracobrachialis, the short head of biceps brachii, the axillary vessels and the brachial plexus. |
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| Posterior |
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The tendon of infraspinatus and its bursa(1)
The tendon of teres minor posterosuperior(2) .All the above relations are covered by deltoid |
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| Inferior |
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The axillary nerve and the posterior circumflex humeral vessels
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| 4.6 ) Blood Supply and Innervation |
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a) Blood Supply
The anterior and posterior circumflex humeral arteries and the suprascapular artery.
b) Innervation
The nerves supplying the muscles whose tendons fuse with the capsule, viz. the suprascapular, axillary and subscapular nerves |
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