Muscles that Horizontally Adduct the Shoulder
- Anterior Deltoid.
- Pectoralis Major.
What is horizontal abduction adduction?
Horizontal abduction (arm behind torso; C) occurs early in the throwing motion, whereas horizontal adduction (arm in front of torso) occurs from the end of late cocking and beyond. Source publication. +4.
What is a horizontal abduction?
Horizonal abduction is the movement of the arms from horizontally across the body. Starting from a position where the arms are straight to the front (shoulders flexed at 90 degrees), moving in the transverse plane to end in a position where the arms are straight out to the side (flexed at 90 degrees).
What is the joint action of the scapula if you were to perform horizontal shoulder adduction?
The major movements at the glenohumeral joint are: Abduction: upward lateral movement of humerus out to the side, away from the body, in the plane of the scapula. Adduction: downward movement of humerus medially toward the body from abduction, in the plane of the scapula.
What muscles do horizontal adduction?
The muscles that horizontally abduct your upper arm are your posterior deltoid, infraspinatus and teres minor. The muscles that horizontally adduct your upper arm are your middle deltoid, coracobrachilis, pectoralis major and latissimus dorsi.
What is horizontal shoulder adduction?
This is called horizontal shoulder adduction. It is when your arms move in toward the body along the horizontal or transverse plane. The main muscles involved in horizontal shoulder adduction are the upper fibers of the pectoralis major and the anterior fibers of the deltoids.
What is the difference between adduction and horizontal adduction?
How does “horizontal adduction” differ from just “adduction”? “Horizontal Adduction” is adduction (bone moving closer to midline) in the horizontal plane. “Adduction” is a bone moving closer to the midline in the frontal plane.
What axis is horizontal adduction?
There are three reference axes in each plane that are used to describe motion: frontal, sagittal, and vertical: Flexion / extension: Movement occuring in a sagittal plane across a horizontal axis. Abduction / adduction: Movement occuring in a frontal plane across a sagittal axis.
Which joint performs adduction abduction horizontal adduction and abduction?
Glenohumeral joint
| Type | Synovial ball and socket joint; multiaxial |
|---|---|
| Blood supply | Anterior and posterior circumflex humeral, circumflex scapular and suprascapular arteries |
| Movements | Flexion, extension, abduction, adduction, external/lateral rotation, internal/medial rotation and circumduction |
Which muscle may contribute to adduction of the glenohumeral shoulder joint?
Adduction – Defined as bringing the upper limb towards the midline in the coronal plane. Pectoralis major, latissimus dorsi, and teres major are the muscles primarily responsible for shoulder adduction.
