Spine
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Twenty of 26 consecutive patients with sciatica caused by myelographically proven disc protrusions who were treated by chemonucleolysis with chymopapain made useful recovery. There were no major complications attributable to the procedure. Certain diagnostic and clinical criteria are described which appear to be important in producing a favorable result following chemonucleolysis.
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Percutaneous lumbar medial branch neurotomy is a technique for facet denervation in which the target is specifically the medial branch of the dorsal ramus. The radiology of the technique is illustrated, and the technical aspects of the procedure are described. The accuracy of previous techniques for facet denervation as compared with medial branch neurotomy is reviewed in a comparative analysis of radiographs illustrating the various techniques. It is suggested that the greater accuracy of medial branch neurotomy will permit a more adequate trial of the rationale and efficacy of facet denervation.
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Selective lumbosacral radiculography and block was performed on 106 patients, using 60% Conray or Dimer-X and 1% lidocaine mixed with corticosteroid. The technique of this method is reported, and the radiculographic findings and diagnostic value of this method are discussed. According to our experience, this method is technically simple and very useful in determining the limit of the lumbosacral nerve root lesion, and occasionally can be used to relieve radicular symptoms. We think it is an especially excellent diagnostic technique for disorders featuring nerve root entrapment in the lateral foraminal recess, in which accurate localization cannot be determined by the other auxiliary diagnostic measures.