Does supraspinatus do adduction?

Does supraspinatus do adduction?

The supraspinatus works in cooperation with the deltoid muscle to perform abduction, including when the arm is in an adducted position. Beyond 15 degrees the deltoid muscle becomes increasingly more effective at abducting the arm and becomes the main propagator of this action.

What rotator cuff muscle does abduction?

supraspinatus muscle
The rotator cuff consists of 4 muscles, which control 3 basic motions: abduction, internal rotation, and external rotation. The supraspinatus muscle is responsible for initiating abduction, the infraspinatus and teres minor for controlling external rotation, and the subscapularis for controlling internal rotation.

What muscles are involved in shoulder abduction and 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.

What is the action of the supraspinatus muscle?

As part of the Rotator Cuff, supraspinatus helps to resist the gravitational forces which act on the shoulder joint to pull from the weight of the upper limb downward. It also helps to stabilize the shoulder joint by keeping the head of the humerus firmly pressed medially against the glenoid fossa of the scapula.

Does supraspinatus initiate shoulder abduction?

The supraspinatus muscle originates from the supraspinous fossa of the scapula, passes under the acromion, and inserts on the superior facet of the greater tubercle of the humerus. It is responsible for the initiation of arm abduction and is in control of the motion up to the first 15 degrees of abduction.

What is shoulder abduction?

Shoulder abduction is a movement of the arm away from the body and should not be confused with shoulder adduction, which involves movement toward the center of the body. During shoulder abduction, the middle deltoid and supraspinatus muscles of the shoulder operate to lift the arm away from the side of the body.

What muscles are involved in shoulder abduction?

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

Which muscle abducts the shoulder joint?

Muscles: supraspinatus (initiates abduction – first 15 degrees), deltoid (up to 90 degrees), trapezius and serratus anterior (scapular rotation, for abduction beyond 90 degrees). The deltoid muscle abducts the arm, but at 90 degrees the humerus bumps into the acromion.

What muscles perform shoulder abduction?

How long does it take for a supraspinatus tendon to heal?

With physical therapy it takes patients up to 4 months to recover. The goal of a surgery is to obtain pain relief, increased range of motion and increased power.