It is a group of these 4 muscles that surround the shoulder joint to stabilize it by holding the head of the humerus in its place within the glenoid cavity during any kind of shoulder and arm …

Nov 6, 2025 · In this article, we shall look at the anatomy of the shoulder joint – its structure, blood supply, and clinical correlations. Explore, cut, dissect, annotate and manipulate our 3D models …

This movement is facilitated by two large muscles: the serratus anterior muscle and the upper and lower fibers of the trapezius muscle. They work together to rotate the shoulder blade, …

4 days ago · Additionally, the trapezius and serratus anterior muscles assist in stabilizing the scapula (shoulder blade) during the movement, ensuring smooth and controlled abduction. …

Aug 25, 2025 · Two muscles are primarily responsible for moving the arm away from the body: the deltoid and the supraspinatus. The supraspinatus, located in the upper back, initiates the …

Nov 12, 2025 · The primary muscles responsible for shoulder abduction are the deltoid and supraspinatus, with several other muscles also playing a role. The deltoid is the primary …

Muscles: supraspinatus (initiates abduction - first 15 degrees), deltoid (up to 90 degrees), trapezius and serratus anterior (scapular rotation, for abduction beyond 90 degrees).

The supraspinatus muscle initiates the abduction movement of the arm by pulling the humeral head medially towards the glenoid cavity thereby creating a fulcrum for movement.

Oct 1, 2025 · Discover the key muscles involved in shoulder abduction and their essential role in movement, enhancing your understanding of upper body mechanics.

Apr 29, 2025 · Shoulder abduction is primarily driven by the deltoid and supraspinatus. The middle deltoid generates most of the force required to lift the arm, while the supraspinatus …