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(bgates1654 @ Nov. 19 2008,10:21)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Here is a way to find out exactly which muscle of the rotator cuff is bothering you.
Here a wiki article for reference and pictures:
http://en.wikipedia.org/wiki/Supraspinatus_muscle
1. Take a tennis ball or some other hard rounded object and place it above the spine of the scapula and against a wall. Roll it horizontally across the entire width of the scapula. This is a relatively small area. Take a look at the picture. If you have pain in this area it is the Supraspinatis.
2. Place the object below the spine of the scapula and do that same as in 1. This is a relatively large area. If you have pain in this area it is the infraspinatis.
3. In the same positioning as 2 roll to the outer edge/off of the scapula. If you have pain here it is either the Teres minor/major or perhaps the long head of the tricep.
4. Bring your arm with the hurt shoulder across the front of your body such that the scapula shifts to the outside of your body and the underside can be accessed with your fingers/knuckles. Probe the area under the scapula for tender spots. If you have pain here it is the subscapularis.
There are also resistance movements which help diagnose/comfirm the palpations above, but I cant think of the them all off the top of my head. However the one for the infraspinatis is checked by placing your arm in front of you with you elbow at 90 degrees making your forearm cross your body horizontally. Grasp your hand and attempt to rotate externally such that your forearm becomes vertical in front of your body without displacing the elbow. Pain with this movement points to as infraspinatis issue.
By doing the palpations above you have learned how to massage your rotator cuff and assist in recuperation.</div>
The link you provided does not include the text you have written. Is that yours or have you taken it from somewhere? I seem to be plagued by shoulder problems recently and would really like to find out exactly where my imbalance is. Cheers.