A patient presents with lateral elbow pain and the ART exam reveals restricted sliding of the radial nerve through the radial tunnel. Which tissue is most likely creating the entrapment?
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A
Extensor carpi radialis brevis at its origin
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B
The supinator muscle at the arcade of Frohse
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C
The flexor carpi ulnaris at the cubital tunnel
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D
The brachioradialis at the musculotendinous junction