Beware Older Brothers

A teenage older brother is teaching his 5-year old sister how to do tricks on her skateboard. After mastering air, he begins to teach her a Caballerial, a 360-degree ollie (where the skater uses her feet to pull the skateboard up into the air) performed on a ramp while riding fakie (riding the board backwards and without grabbing). Indeed, this is recognized as quite a gnarly trick by boarders.

Unfortunately, and predictably, the encouragement by the older brother leads to his younger sister’s bailing (euphemism for falling) on her outstretched hand. Soon after, she experiences numbness over the shaded area of the skin indicated in the image by the triangle. There was considerable crying too, which obscured a crepitus (the grating sound a bone makes when it breaks) arising from her arm. Based on this scenario, what artery is associated with the nerve injured that led to the numbness? For penalty and penance the older brother did not get to attend summer camp and was required to stay home to care for his injured sister who did experience significant wrist drop after her cast was Removed at summer’s end.

Based on this scenario, what artery is associated with the nerve injured that led to the numbness?

A.Axillary

B.Antebrachial cutaneous

C.Lateral thoracic

D.Profunda brachial

E.Radial