Scalp Recorded Somatosensory Evoked Potentials During Spinal Surgery

  • S. Breitner
  • K. A. Matzen
Conference paper


The experiences in 124 intraoperative examinations with scalp SEP in spinal surgery including 38 scoliosis operations and 35 traumatic cases are reported. Technically reliable results were obtained in 92% of cases. Among the changes observed where a continuously decreasing amplitude in 26%, constant amplitudes in 40% and unclassifiable fluctuation in the remainder cases. Neurologically-induced changes were seen in two cases, changes induced by shock and acidosis were found in another two cases. The value of a reproducable P40/N50-complex is stressed and the problems of a grey zone of responses with difficult interpretation is discussed.


Spinal Cord Spinal Cord Injury Neurologic Deficit Spinal Surgery Grey Zone 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • S. Breitner
    • 1
  • K. A. Matzen
  1. 1.Orthopädische Klinik und Poliklinik, Klinikum GroßhadernLudwig-Maximilians-Universität MünchenMünchen 70Germany

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