The infraspinatus is a small, triangular muscle that runs diagonally down the back of your shoulder. It attaches to your scapula, or shoulder blade, on one end and your humerus, the upper arm bone, on the other end. The infraspinatus is part of...
The infraspinatus muscle is on the lower back of the scapula, or shoulder blade. It attaches to the humerus, the long bone in the upper arm, near the shoulder joint. When reaching out to the side and behind, this muscle contracts to complete...
The infraspinatus muscle is attaching to the back of the shoulder blade on one end and to the back of the upper arm bone on the other. It assists with horizontal abduction and lateral rotation of the upper arm within the shoulder socket....
The infraspinatus and supraspinatus are two of the four rotator cuff muscles that act on the humerus bone of your upper arm within your shoulder socket. Exercising these muscles regularly helps increase your shoulder joint's range of motion and...
The infraspinatus is one of the four muscles of the shoulder known as the rotator cuff. This muscle is often weak, which increases the risk of injuring your shoulder, says ExRx.net. Activities such as throwing, rowing and other movements that...
The supraspinatus and infraspinatus muscles are part of the rotator cuff muscles in the shoulder. The supraspinatus muscle originates on the top part of the scapula, above the horizontal ridge, or spine, and inserts on the head of the humerus. The...
The infraspinatus muscle, located below the shoulder blade, is one of the most common problems in rotator cuff injuries. Whether you are stretching, or attempting to recover or prevent rotator cuff problems, it is important to learn how to do...
The supraspinatus and infraspinatus are two small muscles that help make up the rotator cuff of your shoulder. Both are located on the rear of the shoulder. The infraspinatus is the primary external rotator of your shoulder, and the supraspinatus...
As two of four rotator cuff muscles -- the other being the teres minor and subscapularis -- the supraspinatus and infraspinatus muscles activate the upper arm, specifically the lateral rotation of the humerus bone that lies in the shoulder socket....
The American Council on Exercise states that the rotator cuff, in the shoulder, is made up of four muscles: the infraspinatus, the teres minor, the subscapularis, and the supraspinatus. Each of these muscles is individually responsible for a...
The rotator cuff is a critical component of the shoulder that takes part in almost every movement of this joint. As described in an article published in "American Family Physician," the rotator cuff is composed of four muscles--the subscapularis,...
The rotator cuff is a group of four muscles that attach the scapula (shoulder blade) to the humerus (upper arm bone). They provide stability to the shoulder joint, especially during overhead rotational movements, such as throwing a ball or...
The rotator cuff includes the infraspinatus, supraspinatus, teres major and subscapularis muscles. Strengthening these muscles will aid in rehabilitation from rotator cuff damage. Isometric exercise involves exerting force against a resistance...
The rotator cuff refers to a group of four muscles that provide support to the shoulder and allow the shoulder joint to move in a variety of planes. The rotator cuff is composed of the supraspinatus, infraspinatus, teres minor and subscapularis....
The shoulder rotator cuff muscles assist shoulder movements and stabilize the joint. Strength exercises for these muscles include shoulder flexion and internal and external rotation with dumbbells or resistance bands. Strengthening the rotator...
Your rotator cuff is a group of four small muscles--the supraspinatus, infraspinatus, teres minor and subscapularis--that form a literal "cuff" around your humerus, stabilizing it in the shallow shoulder socket. Your rotator cuff is hard at...
The teres major and teres minor are muscles in the back. These small muscles of the back are not targeted in fitness as often as the traps, lats or erector spinae. The teres minor is one of the four rotator cuff muscles and the teres major assists...
The rotator cuff is a collection of muscles which cooperatively stabilize the shoulder joint as well as provide mobility to the joint in multiple planes of space. The four muscles of the rotator cuff are the supraspinatus, infraspinatus, teres...
The major muscles that line and support the shoulder blade include the infraspinatus, supraspinatus, subscapularis and teres minor. These muscles are commonly referred to as the rotator cuff or, simply, the upper back muscles. To work these...
According to the University of California San Francisco Medical Center, the rotator cuff is composed of muscles and tendons that hold the humerus bone within the shoulder joint. The muscles and tendons can sustain complete or partial tears,...
The rotator cuff is an integral part of the shoulder joint. It helps to stabilizes the joint during almost every type of movement of the shoulder. The rotator cuff is composed of four muscles as well as the tendons that attach then to the bones of...
Internal rotation of the shoulder is also called medial rotation. This action brings the upper arm toward the front of the body as the shoulder twists inward. When the internal rotator muscles are tight, it can cause pain, and eventually rounded...
The rotator cuff includes the supraspinatus, infraspinatus, teres minor and subscapularis muscles of your shoulder, according to Dr. Susan Hall, author of the textbook "Basic Biomechanics." They are called the "rotator" cuff muscles because they...
As the Sports Injury Clinic explains, the rotator cuff is not one muscle, but a group of muscles that work together to stabilize the shoulder joint, known as the glenohumeral joint, during rotation and other movements. The muscles that form the...
Yoga exercises can improve the strength and flexibility of your rotator cuff muscles. Strong rotator muscles are less likely to tear or develop shoulder impingement syndrome, bursitis or tendonitis. The rotator muscles include the supraspinatus,...
Four muscles form the rotator cuff group -- supraspinaturs, infraspinatus, teres minor and subscapluaris, according to the 1976 manual "Physical Examination of the Spine & Extremities" by Stanley Hoppenfeld. All four of the rotator cuff...
The rotator cuff muscles are not "show" muscles. These are small, functional muscles hidden deep inside the shoulder joint that are susceptible to strain and injury. Performing exercises for the rotator cuff muscles strengthens them, reducing your...
The shoulder is a ball-and-socket joint, which gives it a full range of motion and high flexibility. The tendons in the shoulder are used both for movement and stability, and they assist the labrum--a cap of connective tissue--in keeping the head...
The rotator cuff which is a group of muscles that stabilizes the shoulder joint and provides rotational movement. The shoulder joint can be thought of as a ball and socket, and has a wide range of motion. Together, the joint and rotator cuff make...
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