What is the rotator cuff anatomy? The rotator cuff is made of four shoulder muscles: The supraspinatus lets you rotate and lift your arm. It stretches from the top of your scapula to the upper end of your humerus (its head). The subscapularis lets you hold your arm outstretched, away from your body.

Nov 26, 2019 · Four muscles and their attached tendons make up the rotator cuff. Each of them aids in a specific motion of your shoulder. All together they help hold your upper arm in place in the shoulder...

Jan 28, 2025 · The rotator cuff is a complex anatomical structure comprising four muscles and their associated tendons. These components work together to stabilize and support the shoulder joint while enabling a wide range of movements.

Mar 27, 2023 · The tendons of the rotator cuff muscles blend with the joint capsule and form a musculotendinous collar that surrounds the posterior, superior, and anterior aspects of the joint, leaving the inferior aspect unprotected.

Jul 21, 2023 · Your rotator cuff is made up of four muscles: the supraspinatus, infraspinatus, teres minor, and subscapularis. The muscles start on the shoulder blade (scapula) and join as tendons to form a thick covering at the top of the humerus (the bone in the upper arm).

Oct 30, 2023 · The rotator cuff muscles are a favourite exam topic! Imprint them into your brain easily using the following mnemonic. Rotator cuff SITS on the shoulder. Supraspinatus; Infraspinatus; Teres minor; Subscapularis; Functions. The main function of the rotator cuff is to stabilize and center the humeral head in the joint socket

The Rotator Cuff (RC) is a common name for the group of 4 distinct muscles and their tendons, which provide strength and stability during motion to the shoulder complex. They are also referred to as the SITS muscle, with reference to the first letter of their names ( Supraspinatus , Infraspinatus , Teres minor , and Subscapularis , respectively).

Aug 21, 2021 · The rotator cuff consists of four muscle-tendon units: the subscapularis, infraspinatus, supraspinatus, and teres minor ( Fig. 50.1 ). These four muscles have their origins on the body of the scapula, a thin sheet of bone, and insert through their tendons onto the greater and lesser tuberosity of the proximal humerus.

The rotator cuff (SITS muscles) is a group of muscles and their tendons that act to stabilize the human shoulder and allow for its extensive range of motion. Of the seven scapulohumeral muscles, four make up the rotator cuff. The four muscles are: subscapularis muscle.

Jun 10, 2018 · The rotator cuff is a group of four muscles and tendons that surround the shoulder joint. These muscles and tendons provide stability in the shoulder, attaching around the head of the humerus bone, encircling it like a cuff. These four muscles include: Infraspinatous: This muscle is positioned more behind the shoulder joint.