How can I tell if I'm grinding my rotator cuff?

Pain & stiffness . In the shoulder joint, certain movement bother more than other, like scratching your back, reaching above your head all symptoms increase with activity and over head work.
New Information. Although many physicians and patients are under the impression that a bone spur is grinding or tearing the rotator cuff, our current knowledge confirms this isn't the case. Learn more here: http://theshouldercenter.Com/rotator-cuff-tear.Htm and http://www.Theshouldercenter.Com/shoulderpain/2013/shoulder-surgery/spur-acromioplasty-impingement/.