Monday, 31 March 2014

Supraspinatus: 1 of 4 Rotator Cuff Muscles

“I injured my rotator cuff” how many times have you heard this? “

What is the rotator cuff anyway? We all know it has something to do with the SHOULDER – well!

The Rotator cuff consists of 4 smaller muscles around the shoulder blade – each responsible for moving your entire arm in various directions  (all directions actually – except EXTENSION)

Here’s how to remember all 4: the first letter of each rotator cuff muscle together spells S.I.T.S


SUPRASPINATUS is 1 of 4 Rotator Cuff Muscles and the first S in 'SITS' :

 Let’s break it down:  SUPRA meaning ‘above’ and SPINATUS referring to the SPINE OF SCAPULA (a long bony ridge on the back of your shoulder blade (scapula) therefore the supraspinatus muscle sits “above the spine of the scapula”.


 Originates from the supraspinatus fossa of the scapula and inserts onto the SUPERIOR facet of the greater tubercle of the humerus (a bony bump on the ball of your shoulder!)

How lovely and fitting that the supraspinatus muscles lives in the “supraspinatus fossa”! 
ACTIONS: helps to move entire arm into flexion and abduction (see photo & video for details!)

These actions are possible because SUPRASPINATUS crosses the shoulder joint onto the top of the arm so that it can help move the arm move the arm!

Here is a visual of shoulder flexion and shoulder abduction!