fisiolike

Body

Long head of biceps tendon

tendon

Where it runs

From just above the shoulder socket, over the top of the ball of the joint and down a groove at the front of the upper arm bone.

What it does

Anchors the long head of the biceps across the shoulder.

In a pull-up

Loaded by hanging and by bending the elbows, and one of the commoner places for pain at the front of the shoulder.

Open it on the 3D model

Drills that work it

In the programs

Works alongside

Other structures the same drills work.

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