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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.
Shoulder problems, including pain, are common [20] and can relate to any of the structures within the shoulder. [21] The primary cause of shoulder pain is a rotator cuff tear . [ 20 ] The supraspinatus is most commonly involved in a rotator cuff tear, [ 22 ] but other parts of the rotator cuff may also be involved.
This pathology is similar to the frozen shoulder. It may be caused by arthritis or by a long period of immobilization Capsular Pattern : According to Cyriax : ROM of Medial rotation, flexion and abduction are more reduced than extension; End-Feels The end-feel is abnormal when there's a capsule contracture.
Holding one end in both hands, palms facing the floor, pull straight back with your elbows at a 90-degree angle. From that position, raise your forearms to create another 90-degree angle. Then ...
The shoulder joint is made up of three bones: the shoulder blade (scapula), the collarbone (clavicle) and the upper arm bone (humerus). The acromion is a bony process at the end of the scapula. The shoulder is a complex mechanism involving bones, ligaments, joints, muscles, and tendons.
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 ...
There are more than eighty Dynasplint Systems that stretch in extension and flexion of the elbow, wrist, hand, finger, knee, and toes, as well as dorsiflexion and plantarflexion of the foot and ankle, supination and pronation of the forearm, internal rotation and external rotation of the shoulder, as well as abduction and adduction of the ...
The pectoralis major has four actions which are primarily responsible for movement of the shoulder joint. [7] The first action is flexion of the humerus, as in throwing a ball underhand, and in lifting a child. Secondly, it adducts the humerus, as when flapping the arms. Thirdly, it rotates the humerus medially, as occurs when arm-wrestling.