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Limb Muscles - Horse Anatomy (view source)
Revision as of 12:59, 15 October 2012
, 12:59, 15 October 2012→Intrinsic Musculature
====='''Lateral'''=====
====='''Lateral'''=====
'''''Supraspinatus ''''' and '''''Infraspinatus'''''
'''''Supraspinatus '''''
:'''Innervation''':Suprascapular n. of the brachial plexus
:'''Innervation''':Suprascapular n. of the brachial plexus
:'''Origin''': The fossae of the scapula
:'''Origin''': Supraspinous fossa of the scapula
:'''Insertion''': Both tubercles of the humerus
:'''Insertion''': Lesser and greater tubercles of the humerus
:'''Action''': Brace the shoulder
:'''Action''': Extends and braces the shoulder
:'''Clinical significance''': The bursa between the tendon of the infraspinatus, and the lateral tubercle of the humerus can be the site of inflammation (bursitis).
'''''Infraspinatus'''''
:'''Innervation''':Suprascapular n. of the brachial plexus
:'''Origin''': Supraspinatous fossa and spine of the scapula
:'''Insertion''': Tendon of insertion bifurcates into a deep part and a superficial part.
:: Deep - Greater tubercle of the humerus
:: Superficial - Lateral humerus, distal to the greater tubercle
:'''Action''': Brace the shoulder, supporting flexion or extension.
:'''Clinical significance''': The bursa between the superficial tendon of the infraspinatus, and the lateral tubercle of the humerus can be the site of inflammation (bursitis).
====='''Medial'''=====
====='''Medial'''=====