3 doctors weighed in:

Where is the posterior deltoid muscle?

3 doctors weighed in
Dr. Robert Purchase
Orthopedic Surgery
2 doctors agree

In brief: Back of shoulder

The deltoid is the fan shaped muscle that drapes over your shoulder. "posterior" is a commonly used medical term that basically means behind or the backside.
So the posterior deltoid is the portion of that fan shaped muscle that is on your back. See the red area of the attached picture.

In brief: Back of shoulder

The deltoid is the fan shaped muscle that drapes over your shoulder. "posterior" is a commonly used medical term that basically means behind or the backside.
So the posterior deltoid is the portion of that fan shaped muscle that is on your back. See the red area of the attached picture.
Dr. Robert Purchase
Dr. Robert Purchase
Thank
Get help from a real doctor now
Dr. Steven Seres
Board Certified,
17 years in practice
497K people helped
Continue
108,000 doctors available
Read more answers from doctors