[Electromyographic study of sciatica caused by lumbosacral disk hernia. Apropos of 40 cases with operative findings].

The Authors present the electromyographic study of 40 cases of low-back and sciatic pain due to lumbar herniation of the intervertebral disk after surgical checking. The E.M.G. parameters, which are thought to be more valid in order to make a diagnosis of the motor nerve-root pain and choose the test muscles to be examined, are shown here. Following the data of scientific publications, a special emphasis is put on the usefulness of the this check-up in order to supply important elements for the evaluation of the degree and position of the nerve-root damage.