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Joints june 24

Joints june 24 - Joints cont Condyloid joint o Oval shaped...

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June 24, 2008 Joints cont… Condyloid joint o Oval shaped condyle fits into ellipitical Saddle joint o Rider in a sadle o Modified condyloid joint Gliding joint o Wrist o Flat articulating surfaces Hinge joint o One surface concave, the other convex o Flexion and extension, one plane o Elbow, interphalangeal joints, ankle Pivot o Conical surface articulates with a ring o Rotational movements o Atlantoaxial o Axis and atlas Selective joints o Glenohumeral joint Most freely mobile Glenoid fossa Glenoid labrum Loose articular capsule Ligaments and rotator cuff (musculocuaneous cuff) Five ligaments hold the joint in place o Three are weak, and often missing
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Glenohumeral ligaments o Two others Coracohumeral ligament, extending from the coracoids process to the greater tubercle of the humerus Superior reinforcement Transverse humeral ligament, extending from the greater to the lesser tubercles of the humerus The biceps tendon is the most important stabilizer of the shoulder.
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