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Electrophysiological studies performed in both cases on radial nerves bilaterally indicative of a partial conduction block of the left radial nerve along the spiral groove with additional distal motor axonal loss due to wallerian degeneration. |
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| Examination |
Left side |
Right side |
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|
|
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| Patient 1 |
Patient 2 |
Patient 1 |
Patient 2 |
|
|
|
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| CMAP-stimulation at the elbow |
5 mV |
4.5 mV |
7.5 mV |
8 mV |
| CMAP-stimulation below the spiral groove |
4.5 mV |
4.2 mV |
7.2 mV |
7.5 mV |
| CMAP-stimulation above the spiral groove |
1.6 mV |
1.3 mV |
6.8 mV |
7.0 mV |
| SNAP |
15 μV |
8 μV |
63 μV |
42 μV |
|
CMAP stands for Compound Muscle Action Potentials. SNAP stands for Sensory Nerve Action Potentials | ||||
Papadopoulou et al. Journal of Brachial Plexus and Peripheral Nerve Injury 2006 1:7 doi:10.1186/1749-7221-1-7 |
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