KINE 3575 Lecture Notes - Lecture 13: Glenohumeral Ligaments, Coracoclavicular Ligament, Shoulder Joint
20 Dec 2019
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Document Summary
Shoulder is ball and socket joint - multi-axial so that it can moves in many directions: damage it in overuse activity, such as over the head activity. Sternoclavicular joint: stops right under neck, can be sprained. Scapulothoracic: how it moves and glides against the shoulder blade. Glenohumeral joint: glenohumeral joint is a multiaxial ball and socket joint which depends on the muscles for support. Scapulothoracic: not a true joint but movement of the scapula on the thoracic ribs, after 20 degrees, there should be a 2:1 ratio of movement. For every 2 degrees of gh joint movement there is one degree of thoracic movement. Lesser tuberosity/ tubercle: bicipital groove, coracoid process. Ligaments: weak and loose because capsule of the joint is really loose, acromioclavicular, coraco-acromial ligament, big area where we get impingement in the shoulder. Long head of biceps insert on the shoulder blade. If it inserts on the top the fibers of tendon blend down into the labrum.
