Upper Extremity Elbow Osteology, Ligaments, Muscles, Vessels

Presentation  Brachial Plexus

Midsemester Survey  Level of performance compared to effort:  Thieme term lists need combing through  Other thoughts on discrepancy in lab?  Teaching strategies  Reduce lecture time  Disorders and dysfunctions?  Essays  Instructional materials?  Clarity in assignments?  Fairness in evaluation?  Clicker questions vs. quizzes in lecture

Upper Extremity Fascia

Anterior Shoulder

Posterior Shoulder

Arm Muscles  Anterior:  Biceps Brachii  Short head  Long head (2 joint)  Brachialis  Coracobrachialis  Posterior:  Triceps  Lateral head  Long head (2 joint)  Medial head

Arm Muscles Task  Compare and contrast actions around joints:  Coracobrachialis and short head of biceps  Long head of biceps and long head of triceps  Brachialis and lateral and medial heads of triceps  Brachialis and deltoid  Short head and long head of biceps  Biceps and brachialis  Triceps and anconeus

Coracobrachialis is cool because it does NOT… A. attach to the coracoid process B. do both shoulder flexion and horizontal adduction C. attach to the middle of the humerus D. cross 2 joints

The long head of biceps attaches more proximally on the humerus than the coracobrachialis. A. True B. False

The long head of biceps is to the long head of triceps as the ____________ is to the lateral and medial heads of triceps. A. Brachialis B. Coracobrachialis C. Short head of biceps D. Anconeus

Clinical Relevance  Biceps tendinitis  Rupture of tendon of long head of biceps  Bicipital myotatic reflex

Clinical Relevance  Injury to musculocutaneous nerve  Injury to radial nerve 

Your patient heard a “snap” and presents with a popeye deformity. What happened? A. The short head of biceps tendon ruptured B. The long head of biceps tendon ruptured C. The brachialis insertion ruptured D. The musculocutaneous nerve was injured

Elbow Osteology and Ligaments  break

Ulna & Elbow Joint

Clinical Relevance  Bursitis of elbow  Dislocation of the elbow

Clinical Relevance

Your friend’s daughter shrieks after her older brother pulled her arm and holds the elbow flexed and pronated protectively. What should you do? A. Bring her to the hospital – this is a very serious injury B. Supinate and flex the elbow C. Pronate and extend the elbow D. Pronate and flex the elbow

Conclusion  Wednesday  Elbow biomechanics  Forearm muscles  Wrist and hand osteology