Glenn,

You may want to check this site out--lots of information. http://www.ehealthmd.com/library/Rotator-Cuff-Tear/RCI_surgery.html
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)