infraspinatus muscle

The infraspinatus is a muscle located on the back of your shoulder blade (scapula). It plays a key role in shoulder movement, primarily helping you rotate your upper arm outward and stabilize the shoulder joint. This muscle contributes to activities like throwing, lifting, or reaching overhead. It works together with other shoulder muscles to ensure smooth, controlled movements and to prevent dislocation. The infraspinatus is part of the rotator cuff group, which is essential for shoulder strength and stability. Proper function of this muscle is vital for shoulder health and mobility.