It is this force that needs to be stabilized at the glenohumeral joint. This force includes component forces applied to the humerus by muscles, capsule, and ligaments as well as by external factors such as gravity, contact with objects, and inertia. Glenohumeral translation is movement of the center of the humeral head with respect to the face of the glenoid. Glenohumeral translational laxity is the translation observed on examination of the joint. A substantial amount of laxity is characteristic of normal glenohumeral joints.
Glenohumeral stability is the ability to maintain the humeral head centered in the glenoid fossa.
Glenohumeral instability is the inability to maintain the humeral head centered in the glenoid fossa. Glenohumeral apprehension is the sense of impending instability in certain glenohumeral positions. Traumatic instability is instability that arises from an injury of sufficient magnitude to tear the glenohumeral capsule, ligaments, or rotator cuff or to produce a fracture of the humerus or glenoid. Atraumatic instability is instability that arises without significant trauma. Disclaimer Please honor our copyrights and disclaimer.