Clinical Musings II

A few weeks ago a patient came into the office complaining of shoulder pain with most shoulder movements that woke her up in the night. When asked where the pain was located she stated that the pain was in the lateral shoulder. She then started to rub the outside of her arm. When asked if she feels pain when she rubs her arm in the area that usually hurts with shoulder movement, she stated the she does not.  This is an extremely common presentation for shoulder pain.

What this patient was experiencing was referral pain from the rotator cuff. Lateral shoulder pain that occurs with movement but does not hurt with palpation is usually referral pain from the infraspinatus tendon of the rotator cuff.

The rotator cuff (RTC) is a term that is thrown out there a lot and is usually referred to without much knowledge of what it actually is. The RTC is actually a group of 4 muscles: The infraspinatus, subscapularis, supraspinatus and the teres minor. 

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These four muscles are the primary movers and stabilizers of the shoulder. People think that you only injure your RTC by playing sports, but most often times we can injure these structures by poor posture and repetitive habits. 

The patient I was seeing was an avid exerciser that just finished knee surgery. During that time she was exercising her upper body exclusively and thus caused irritation to her RTC. This is what was causing her pain. More specifically, she was presenting with infraspinatus tendinitis (inflammation of the tendon). 

Treatment for this condition is usually trigger point release techniques (either dry needling or deep massage), Ultrasound, RTC strengthening, and shoulder mobilizations. This patient has been seen for 3 weeks and is showing vast improvements. Unfortunately, physical therapy is not always helpful and more aggressive treatment maybe necessary.