Anatom3DLeft rhomboid minor
Musculus rhomboideus minor sinister · Levý malý sval rombický
Muscles
Looks like
A small strap muscle just above the rhomboid major, from the lowest neck and first chest vertebra to the top of the inner shoulder blade edge.
What it does
Pulls the shoulder blade toward the spine and slightly up.
Keeping it well
Upper back pain between the shoulder blades is usually muscular; with chest pain or breathlessness see a doctor.