Table 1 Examined nerve injuries, methods, extent, and Seddon classification*.
From: Infrared neural stimulation markedly enhances nerve functionality assessment during nerve monitoring
Injury type | Method | Partial injury | Complete injury | ||
|---|---|---|---|---|---|
Extent | Seddon classification | Extent | Seddon classification | ||
Transection | Razor blade via nerve cutting guide | Half the diameter of the nerve severed | Neurotmesis | Cut through entirety of the nerve | Neurotmesis |
Crush | Calibrated hemostats | Half of the nerve diameter crushed | Axonotmesis | Crushed entire diameter of the nerve | Axonotmesis |
Stretch | Hook electrodes mounted to micromanipulator | Nerve stretched to an average strain of:\(\varepsilon =8.6\pm 1.6\%\) | Neuropraxia | Stretched nerve to an average strain of:\(\varepsilon =13.4\pm 3.6\%\) | Neuropraxia |
