Serratus anterior muscle

In this article we will discuss about Serratus anterior muscle. So let’s get started.

Serratus anterior muscle

It originates as nine to ten slips of muscle fibres from the outer surface of upper eight or nine ribs and gets inserted into the medial border of scapula. Serratus anterior superior, intermediate and inferior fibres gets inserted into the superior angle, medial border and inferior angle respectively. It is innervated by long thoracic nerve and blood supply is through the lateral thoracic, superior thoracic and thoracodorsal artery. It’s main function is protraction of scapula and stabilizes scapula and assists in upward rotation of scapula. Clinically damage to the nerve supply of Serratus anterior leads to “winging of scapula”.


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