Body

tendon

Where it runs

The end of the infraspinatus, at the back of the top of the upper arm bone.

What it does

Carries the pull of the infraspinatus to the arm.

Drills that work it

In the programs

• Phase 1 — Set the shoulder blades — Shoulder: kipping works, strict pull-ups do not
• Phase 2 — Own the top and the way down — Shoulder: kipping works, strict pull-ups do not

Works alongside

Other structures the same drills work.

• Infraspinatus
• Teres minor
• Deltoid

General anatomy, simplified. It describes a structure, not anybody's shoulder, and cannot say what is wrong with yours.