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A 26-year-old male sustains a traction injury to his left arm after a motorcycle crash with resulting weakness in this left upper extremity. An electromyography (EMG) done shows normal cervical paraspinal muscle activity. Which of the following statements is true regarding this injury?
The injury has likely resulted in the avulsion of several nerve roots
Physical exam would likely reveal drooping of his left eyelid and anhidrosis
Intact paraspinal musculature on EMG is suggestive of a post-ganglionic lesion
Immediate surgical intervention with neurotization would eliminate weakness and restore function
The patient would show a normal histamine test
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A 21-year-old collegiate football player has been diagnosed with a left superior trunk brachial plexus injury following a tackle. Which of the following would most likely be normal on physical exam?
Sensation over the lateral aspect of shoulder
Sensation over radial aspect of forearm
2nd and 5th finger abduction
A patient sustains a transection of the posterior cord of the brachial plexus from a knife injury. This injury would affect all of the following muscles EXCEPT?
A good lecture on brachial plexus injury:
HPI - 74 y/o female s/p nonsyncopal fall with left proximal humerus fracture dislocation, sent from outside hospital for definitive treatment
What would you do with the nerve function loss?