Rotator cuff series; Subscapularis

Subscapularis is the largest of the rotator cuff ("RC") muscles; it lies inside/under the shoulder blade itself, and is responsible for internal rotation.

Our research and experience shows that, in the vast majority of the population (excepting two groups, mentioned below) the shoulder--arm function 'internal rotation' is much stronger than external rotation. Loosening the internal rotator cuff muscle (subscapularis) and strengthening and stretching the external rotator cuff muscles (infraspinatus and teres minor) can have an almost magical effect on some kinds of shoulder pain.

Symmetry of functional strength is needed in the rotator cuff muscles, to avoid having the humerus pulled forwards in the joint capsule (the capsule and its associated fascia are infused with pain-signalling mechanisms; if the capsule is stretched by this movement, you feel pain). Together with long head of biceps, unbalanced RCs are a hidden cause of shoulder pain and/or dysfunction for many.

The two groups in the population who do not conform to this trend are, perhaps unsurprisingly, among the strongest and most mobile of athletes too: gymnasts and rock climbers.

I have disabled comments on all our clips, because too many people abuse the opportunity. I can be contacted through my channel if you want to discuss a particular subject; as well, there are the new Stretch Therapy Forums (www.kitlaughlin.com/forums). You only need a real email address to join and post your questions.

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