USA AAO Upper Extremity Exam with 100% correct answers

USA AAO Upper Extremity Exam with 100% correct answers What pathology results in an arm adducted, medially rotated, elbow extended, and wrist pronated? Know the alias names! - answerErb's Palsy / Waiter's Tip / Superior Trunk Lesion (C5,C6) Which age group is most at risk for Erb's Palsy? Why? - answerInfants. Internal traction on neck during delivery What pathology is caused by a sudden upward pull on the arm? - answerKlumpke Palsy / Claw Hand / Inferior Trunk (C8, T1) What is the correct sequence of the subunits that form the brachial plexus? - answerRoots, Trunks, Divisions, Cords, Branches (Remember to drink cold bubbly;) Which nerve innervates the deltoid and the teres minor? - answerAxillary Nerve (C5, C6) Damage to this will result in a flattened deltoid and loss of arm ABduction. - answerAxillary Nerve (C5, C6) What nerve is in danger when the surgical neck of the humerus is fractured or the humerus is anteriorly dislocated? - answerAxillary Nerve (C5, C6) What nerve can be damaged and thus results in Saturday Night Palsy / Wrist Drop? - answerRadial Nerve (C5 - T1) Which nerve is in danger when an axillary crutch is not fitted properly or the midshaft of the humerus is fractured? - answerRadial Nerve (C5 - T1) Damage to the radial nerve can result in which pathology? Know the aliases! - answerSaturday Night Palsy / Wrist Drop The extensors are innervated by which nerve? - answerRadial Nerve (C5 - T1) Which nerve innervates the biceps brachii, coracobrachialis, and brachialis? - answerMusculocutaneous Nerve (C5, C6, C7) If someone is experiencing loss of elbow flexion and forearm supination, this nerve is most likely compressed. - answerMusculocutaneous Nerve (C5, C6, C7) A stab wound or surgery to this nerve would result in a winged scapula. Which nerve is it? - answerLong Thoracic Nerve (C5, C6, C7) Someone with a winged scapula will have difficulty with this movement. What is it? - answerCannot ABduct arm above horizontal position This nerve innervates the serratus anterior. What is it? - answerLong Thoracic Nerve (C5, C6, C7) A proximal lesion to the median nerve or supra condylar fracture of the humerus results in this pathology. What is it? - answerPope's Bless