What is the role of needle electromyography (EMG) in the diagnosis of diabetic neuropathy?

Updated: Jan 08, 2019
  • Author: Dianna Quan, MD; Chief Editor: Romesh Khardori, MD, PhD, FACP  more...
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Answer

Needle EMG is performed in the distal muscles in cases of generalized neuropathy and entrapment, in the proximal limb muscles in amyotrophy, and in the paraspinal and limb muscles in suspected radiculopathy. The examiner searches for abnormal spontaneous potentials, voluntary motor unit recruitment, and motor unit configuration. In weak patients, the recruitment characteristics can often help distinguish a neuropathic from a myopathic process.


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