[Electromyography and electroneurography in peripheral nerve lesions. Part II].

Electromyographical and electroneurographical examinations are indicated in the forefield of the surgical treatment for radicular syndromes, traumatic plexus and nerve lesions as well as compression or bottle-neck syndromes. The electrophysiological findings point out the neurogenic nature of the disturbance. They furthermore furnish statements with respect to the localisation, the extent, the kind and the prognosis of the lesions. The electromyographical and electroneurographical examination programme is determined by the anatomical innervation conditions and the questions that are of clinical interest. In case of radicular syndromes it is mainly the localisation with respect to the height of the root lesions that is of interest. In plexus lesions, the question regarding the reinnervation chance is usually to the fore. In primary nerve lesions, the question whether there is a partial or total nerve separation is above all of interest. In secondary nerve lesions and the bottle-neck syndromes it is usually necessary to determine the exact site of the lesions and the extent of the chronic compression damage. In this paper, these aspects ae discussed on the basis of the more important clinical pictures and practical hints for diagnosis and therapy are given.