Nerve Root vs. Peripheral Nerve (1 of 2): sensory complaints upper extremity
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Can you explain the MRS of the the Radial Nerve, with the sensory deprivation of the Pure zone on the dorsal aspect of the hand with a little more detail?? I feel like I am missing something. Radial is exclusively sensory on the dorsal aspect of the hand, correct?
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The radial n does supply the back of the hand. Understanding the pure patch location allows for differntiating a nv root problem from a peripheral n problem. C6 overlaps the radial area as well. Pure patch sensory loss suggests the peripheral n lesion as opposed to the n root, but in clinical context, you would confirm this with motor and reflex texting. I hope this helps...
NeuroDocUniverse 5 months ago