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The scapula is moved posteriorly and medially along the back, moving the arm and shoulder joint posteriorly. Retracting both scapulae gives a sensation of "squeezing the shoulder blades together." rhomboideus major, minor, and trapezius Scapular protraction [10] (aka scapular abduction) The opposite motion of scapular retraction.
Improves stability during scapular motion which may decrease impingement of the bursa in the subacromial space. Active assisted range of motion - creeping the hand up the wall in abduction, scaption and flexion and door pulley manoeuvre Help to improve active range of motion and gravity assists with shoulder depression
The rotator cuff muscles of the shoulder produce a high tensile force, and help to pull the head of the humerus into the glenoid cavity. The glenoid cavity is shallow and contains the glenoid labrum which deepens it and aids stability. With 120 degrees of unassisted flexion, the shoulder joint is the most mobile joint in the body.
So, you’re not super into lifting weights but want to improve upper-body strength and range of motion. Adding resistance band shoulder exercises will help get you there. Adding resistance band ...
These exercises are used to increase stability, strength and range of motion of the subscapularis, supraspinatus, infraspinatus, and teres minor muscles within the rotator cuff. [26] Passive exercises include internal and external rotation of the shoulder joint, as well as flexion and extension of the shoulder. [26]
The most important ligament involved in shoulder joint stability is the Inferior Glenohumeral Ligament. During abduction of the arm, the middle and inferior ligaments become taut while the superior ligament relaxes. The radius of curvature of the head of the humerus is greater superiorly than inferiorly, which further stretches these ligaments ...
One action the scapula performs during a throwing or serving motion is elevation of the acromion process in order to avoid impingement of the rotator cuff tendons. [8] If the scapula fails to properly elevate the acromion, impingement may occur during the cocking and acceleration phase of an overhead activity.
By being so shallow the glenoid cavity allows the shoulder joint to have the greatest mobility of all joints in the body, allowing 120 degrees of unassisted flexion. Additional range of motion in shoulder flexion (typically up to 180 degrees in humans) is also accomplished by the great mobility of the scapula (shoulder blade) through a process ...