I had a Nerve Conduction Study and EMG done recently because of nerve root compression due to cervical herniation. The Nerve Conduction Study came back normal. The EMG needle showed active Denervation.
MY QUESTIONS:
1. If my nerve is conducting normally but the muscle is not receiving the signal, does this mean that my nerve root injury is Neuropraxia? I ask this because it appears that my nerve is intact since it can still conduct properly. If it was axonotmesis, then the nerve conduction study would have been abnormal, is this correct?
2. If my injury is neuropraxia, and is localised only at the nerve root, then what kind of timeframe should i expect until recovery? My symptoms now are arm weakness persisting for 3 months. But if the neuropraxia recovers, does that mean the nerve will then be able to communicated with the muscles, and this would produce a normal EMG needle test?
Thank you
For your reference Here are the Doctor's notes:
SUMMARY: Nerve conduction studies were normal. Needle examination revealed increased insertional activity and fibrillation potentials, in left C6 innervated muscles with reduced recruitment of normal motor unit potentials.
INTERPRETATION: The EMG Findings were those of an electrophysiological moderate in severity acute left C6 radiculopathy. Active denervation is prominent, but that does not necessarily reflect ongoing compression and correlation with current imaging is required.