Which nerve biopsy is taken to diagnose neuritic leprosy?

Neuritic leprosy - only nerve involved no skin involvement. - Slit Skin smear(SSS) - negative - Nerve thickening - confirms diagnosis. A purely sensory thickened peripheral nerve should be sampled as there are chances of nerve damage during biopsy If its a motor nerve--> deformity . Therefore, option median & ulnar are ruled out. So Radial cutaneous branch is used for sampling during nerve biopsy.