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Rotator Cuff Muscles

Rotator Cuff Muscles – Functional Anatomy

Rotator Cuff Muscles Rotator muscles tend to have anatomy that is more complicated than expected. Each muscle has its own structural quirks, which need to be considered in treatment. As a whole, they complete each other in the balancing act of securing the humeral head. It is complicated by unexpected attachments as well as play …

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Infraspinatus – Functional Anatomy

The anatomy of the infraspinatus is a bit more complicated than typically explained. A more detailed understanding is helpful for effective neuromuscular massage. Overview of Anatomy Overview Attachments, Function, and Innervation Origin: infraspinous fossa Insertion: posterior greater tubercle of the humerus Function: stabilize the humeral head, externally rotate the humerus Innervation: C4-C6, Brachial Plexus, Suprascapular nerve …

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Subscapularis – Functional Anatomy

Subscapularis The subscapularis muscle is thick with multiple bellies on the underside of the scapula. Its tendon is separated from the joint capsule by a bursa. It can be a key player in frozen shoulder and pitching restrictions. Origin: subscapular fossa Insertion: lesser tubercle of the humerus Function: stabilization of the humeral head, internal rotation of the …

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Teres Minor – Functional Anatomy

    Teres minor is a simple muscle in a complicated area of structural anatomy. Its a flat muscle that lies up under the inferior belly of infraspinatus and posterior deltoid. It is the border of rotator cuff muscle. Consequently, teres covers the long head of the triceps, which attaches to the infraglenoid tubercle and separates …

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Supraspinatus – Functional Anatomy

Supraspinatus anatomy presents as a simple strip of mucle. It attaches to the top of the scapula and inserts on the head of the humerus. More extensive studies have been done because of its association with shoulder impingement and tendinopathy. In fact, it is more complex than it appears. Actually, more recent studies, like this …

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