Histological Consequences of Needle-Nerve Contact following Nerve Stimulation in a Pig Model
Nerve injury score. Slight nerve damage is represented by the score grades 1 and 2. A severe nerve injury with structural damage is described with score grades 3 and 4. For detailed description with histological examples, please refer to Steinfeldt and coworkers .
No signs of neural injury or inflammation
Areas with slight accumulation of inflammatory cells
Areas with distinctive signs of inflammation
Areas with distinctive signs of inflammation plus haematoma
Areas with distinctive signs of inflammation plus myelin damage
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