What Is the Trapezius Muscle? Trapezius muscles are large, paired, triangular muscles in the back of your neck and upper back. They extend down your back, but they’re mostly involved in the movements ...

A trapezius strain is a muscle or tendon injury that limits movement and strength in the arms. It occurs when the fibers are stretched beyond their typical limit. In severe cases, it can lead to a ...

Have you ever felt that nagging discomfort after a long day, or noticed your posture slipping as you scroll through your phone? The trapezius muscle, often overlooked, plays a crucial role in ...

If you’ve got a lump on top of your shoulder muscle, you have a good chance of it being a trapezius knot. This type of lump in the trapezius muscle — called a myofascial trigger point — is among the ...

Choi, a 31-year-old female office worker, suffered severe side effects for over eight months after receiving a so-called “trapezius muscle injection” last summer. Before attending a water-themed ...