Shoulder and Elbow

Glenohumeral Suction Cup

Last Updated: Thursday, February 10 2005


The glenohumeral "suction cup" provides stability by virtue of the seal of the labrum and capsule to the humeral head.

Suction

Glenohumeral Balance

Last Updated: Thursday, February 10 2005

Glenohumeral balance is a stabilizing mechanism in which the glenoid is positioned so that the net humeral joint reaction force passes through the glenoid fossa.

 

Joint positioning

Evaluation of the Stiff Shoulder

Last Updated: Monday, February 4, 2013

Evaluation of the Stiff Shoulder

 The normal shoulder is the most moveable joint in the body. It enables us to put our hand in a wide range of positions for example reaching over head reaching cross the body reaching up the back and rotating out to the side. These motions are accomplished by motion between the humerus (arm bone) and scapula (shoulder blade) as well as between the scapula and the chest wall. These motions are called humeroscapular and scapulothoracic motions.

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