What is the role of the ankle clonus test as an intraoperative assessment in the treatment of idiopathic scoliosis?

Updated: Dec 02, 2020
  • Author: Charles T Mehlman, DO, MPH; Chief Editor: Jeffrey A Goldstein, MD  more...
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Answer

Hoppenfeld described an ankle clonus test for intraoperative assessment of the integrity of the spinal cord during scoliosis surgery. In more than 1000 patients, the test was noted to have no false-negative results and three false-positive results. This translated into 100% sensitivity and 99.7% specificity. [130]


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