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ulnar mixed
I would be grateful for thoughts on the ulnar-mixed-fibres waveform (lowermost trace) across the elbow on the left.
Woman, mid-forties, good health.
Numbness affecting left hand, mostly ulnar half, suspected to be related (having followed) soft-tissue injury to the neck ten years earlier. Neck normal on imaging.
Referred specifically for the possibility of nerve entrapment in the cubital tunnel.
No wasting or weakness in the upper limbs.
Conduction mildly slow (43m/s) across elbow, and only in fascicles to FDI.
I have seen similar two-peaks waveforms in several ulnar elbow-neuropathies, and I would be grateful for your thoughts on whether the dissociated peaks do reflect pathology in a subset of the “mixed fibres”.
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