Two cases are described in which inversion of the quadriceps jerk was observed. It is suggested that the finding of an inverted quadriceps jerk is evidence of a spinal cord lesion at L2, 3, 4 segmental level and has for the lumbar cord the same localising value as the inverted supinator jerk for the cervical cord.
CITATION STYLE
Boyle, R. S., Shakir, R. A., Weir, A. I., & McInnes, A. (1979). Inverted knee jerk: A neglected localising sign in spinal cord disease. Journal of Neurology, Neurosurgery and Psychiatry, 42(11), 1005–1007. https://doi.org/10.1136/jnnp.42.11.1005
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