Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.

Definition of Subdeltoid

Medically reviewed by Min Clinic Staff | Updated: January 2026

Subdeltoid: Beneath the deltoid, the large muscle that stretches from the clavicle (collarbone) to the humerus (the long bone in the upper arm) and so covers the shoulder.