Medically reviewed by Amy Kwan, PT Your latissimus dorsi (your "lats") is a broad, flat, triangle-shaped muscle that spans ...

Arm pain is a common experience with many possible causes. Acute injury, overuse (wear and tear), and underlying conditions ...

A pulled (or strained) muscle could take a few days to feel better. Severe injury could take weeks to months. Find out what ...

It plays a role in many arm movements and supports respiratory muscles to help with breathing. Traumatic or overuse injuries to your lats can cause pain and discomfort that affects your mobility.