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Iatrogenic paraplegia in spinal surgery.

Delank KS, Delank HW, König DP, Popken F, Fürderer S, Eysel P

Department of Orthopaedic Surgery, University of Cologne, Joseph-Stelzmannstrasse 9, 50931, Cologne, Germany. karl-stefan.delank@medizin.uni-koeln.de

INTRODUCTION: Paraplegia as a result of a surgical spinal procedure is a rare complication. The risk cannot be precisely quantified due to the lack of current data. The aim of this study was to record a sufficiently large number of major spinal operations, especially extended methods in scoliosis surgery. Hereby, a reliable statement regarding the risk of severe neurological complications with these surgical techniques should be possible. First, a retrospective analysis of patients from a German spine centre (spinal fusion) and a survey of 17 German centres of spinal surgery were conducted for the retrospective acquisition of severe iatrogenic neurological complications. MATERIALS AND METHODS: The study included 1194 patients who underwent a spinal fusion during the period 1992-2002. The incidents of postoperative paraplegia are described in detail, and case studies done. Possible causes, methods of intraoperative monitoring and options of therapy are discussed according to research in relevant publications. Additionally, severe neurological complications of 3115 spinal operations were recorded in a standardised survey conducted throughout major German spinal centres. RESULTS: Of the 1194 patients surveyed, 7 (0.59%) experienced a postsurgical complete or incomplete paraplegia. In 3 of the recorded cases, the cause could be identified. The survey of 3115 scoliosis surgeries showed that iatrogenic paraplegia occurred with a frequency of 0.55%. The risks associated with short spinal fusions (0.14%), cervical discectomies (0.07%) and lumbar discectomies (0.03%) are considerably less. CONCLUSION: Operative treatment of scoliosis with a high degree of correction carries a risk of neurological complications of about 0.5%. Mechanical as well as ischaemic damage to the spinal cord can be detected early by means of consistent intraoperative neuromonitoring.

Published 28 February 2005 in Arch Orthop Trauma Surg, 125(1): 33-41.
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