Shoulder

Sternal end of the clavicle

Extremitas sternalis claviculae

How to find it

Move a centimetre laterally from the jugular notch: there you feel a clear thickening of the clavicle. Have the shoulder shrug and drop, and that part moves clearly under your finger.

What you use it for

The only true joint between arm and trunk. Swelling here after a fall may be a dislocation; a posterior dislocation is rare but threatens the great vessels and is an emergency.

On the bone

Clavicle

Body region

Shoulder