Hi, What Does Mean Laesio Neuronalis Sin. C6-C7-C8 Grade Levis?

Hi, what does mean Laesio neuronalis sin. C6-C7-C8 grade levis? Also, bulging of the annulus of the disc and there are posterior osteophytes producing mild indentation of the thecal sac, and mild boni narrowing of the neural exit foraqmen of the right C6 nerve root? Thank you.