What muscles abduct shoulders?

The primary muscles involved in the action of arm abduction include the supraspinatus, deltoid, trapezius, and serratus anterior.

How do you abduct your shoulders?

Shoulder abduction: Stand and hold a weight in your hand with your palm facing your body. Slowly raise your arm to the side with your thumb pointing up. Then raise your arm over your head as far as you can without pain. Hold this position for as long as directed.

What does abduct the shoulder mean?

Shoulder abduction involves the rotation of the shoulder joint in such a way as to move the arm straight out and away from the body. This anatomical term of motion refers specifically to the movement of the arm away from the midline of the body. Workers reaching for supplies, tools, or products may make this motion.

What is normal abduction for shoulder?

Normal range of active movement of the shoulder has been specified by the American Academy of Orthopedic Surgeons (AAOS) to be 180° for flexion and abduction and 90° for external rotation [6].

What is the prime mover for shoulder abduction?

The middle region of the deltoid muscle is the prime mover for arm abduction. The pectoralis major acts as an antagonist to the middle deltoid anteriorly, whilst the latissimus dorsi acts as the antagonist posteriorly.

What muscles perform shoulder adduction?

Adduction is accomplished primarily by the pectoralis major, latissimus dorsi, teres major, triceps, and coracobrachialis. The deltoid and the supraspinatus, a muscle that runs along the scapula in the back, are the two main abductors of the shoulder.

Why is shoulder abduction important?

Its primary function is to laterally rotate and protract the scapula. The trapezius and serratus anterior muscles work in tandem to coordinate rotation and movement of the scapula to accommodate the full range of motion of the arm. Specifically, they facilitate abduction of the arm from 90 degrees and further upwards.

What limits shoulder abduction?

Muscles that can limit shoulder abduction are: Pec Major/Minor. Teres Major. Latissimus Dorsi.

What muscles cause shoulder adduction?

The latissimus dorsi muscle at the level of the shoulder is the most important internal rotator, as it is the most important for the adduction and flexion of the shoulder. It’s a fusiform muscle. The pectoralis major muscle helps flexion, internal rotation, and adduction on a horizontal plane.