This week, we're going to do some peripheral nerve palsies because I happen to be very weak (pun intended) on them.
A 30 year old man presents with wrist drop. On examination, he has weakness of his finger and wrist extensors. He also has loss of sensation over the dorsum of his hand. Triceps strength is normal. You give the patient some thiamine because of alcohol use, but that doesn't change anything.
Challenge: What's the lesion?
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