Impingement occurs when inflammation, bone spurs, or fluid buildup
rotator cuff tendon to be squeezed and rub against a
Every time you raise your arm above your head, the upper tendon in
the rotator cuff (supraspinatus tendon) and the
bursa that lies on top of the tendon glide on the
underside of the upper end of your shoulder blade (acromion).
Over time, the tendon may wear against the underside of the
November 30, 2011
William H. Blahd, Jr., MD, FACEP - Emergency Medicine
& Timothy Bhattacharyya, MD
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