Definition of Infraspinatus muscle
Infraspinatus muscle: A muscle that assists the lifting of the arm while turning the arm outward (external rotation). The tendon of the infraspinatus muscle is one of four tendons that stabilize the shoulder joint and constitute the rotator cuff.
Last Editorial Review: 3/19/2012
Back to MedTerms online medical dictionary A-Z List
Need help identifying pills and medications?
Get the latest health and medical information delivered direct to your inbox FREE!