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

Three patients with spinal muscular atrophy had improved muscle strength and could walk farther after a month of daily spinal ...

Three people with a muscle-destroying disease destined to worsen got a little stronger when an implanted device zapped their ...

Pain in this muscle sometimes develops due to underlying structural abnormalities in the spine. Whatever the cause, effective treatments can help restore the mobility and function of your arms and ...