CLASIFICATIONS & BIOMECHANICS | CLINICAL ANATOMY | NEUROVASCULAR | MOVEMENT | OTHER |
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Compound synovial modified hinge joint
The elbow joint is classified as?
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Acromioclavicular joint dislocation
What does a step deformity indicate?
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Describe innervation to the radiocarpal jointAnterior interosseus nerve (median), posterior interosseous nerve (radial), dorsal & deep branches of ulnar nerve
Describe innervation to the radiocarpal joint
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Permit a larger ROM
What is the purpose of the glenohumeral joint capsule being loose?
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Positions glenoid fossa to serve upper limb function, maintain adequate length tension of muscles acting on humerus
What is the purpose of the scapulohumeral rhythm?
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Radiocarpal & Metacarpophalangeal Joints
Which joints of the upper limb are classified as condyloid synovial?
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Coracoclavicular & acromioclavicular ligaments
Dislocation of the AC joint would result in which ligaments being torn?
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Glenohumeral, Acromioclavicular, Sternoclavicicular
The suprascapular artery provides arterial branches to which 3 joints?
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Abduction & External Rotation
What is the closed pack position of the GH joint?
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Medial clavicle, clavicular notch of sternum, medial surface of 1st costal cartilage
What are the articulations of the sternoclavicular joint?
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What is the mechanism for a glenohumeral labrum tear?Sudden contraction of biceps or forceful subluxation of the humeral head over labrum
What is the mechanism for a glenohumeral labrum tear?
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Acromioclavicular, Sternoclavicular, or both
Movement at the scapulothoracic joint is always accompanied by movement at which other joint/joints?
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It's a functional joint, not a true anatomical joint as it does not have the features of anatomical joint
Why is the scapulothoracic joint considered atypical?
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Wrist flexors
An avulsion fracture of the medial epicondyle of the humerus would impact the action of which group of muscles?
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The humeral head rolls superiorly & slides inferiorly
Describe the movement of the humeral head in the glenoid fossa in OKC abduction
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What affect does the greater tuberosity of the humeral head have on shoulder abduction?Acts as an anatomical pulley to improve the moment arm of deltoid
What effect does the greater tuberosity of the humeral head have on shoulder abduction?
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