TY - JOUR T1 - Inverted knee jerk: a neglected localising sign in spinal cord disease. JF - Journal of Neurology, Neurosurgery & Psychiatry JO - J Neurol Neurosurg Psychiatry SP - 1005 LP - 1007 DO - 10.1136/jnnp.42.11.1005 VL - 42 IS - 11 AU - R S Boyle AU - R A Shakir AU - A I Weir AU - A McInnes Y1 - 1979/11/01 UR - http://jnnp.bmj.com/content/42/11/1005.abstract N2 - 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 12, 3, 4 segmental level and has for the lumbar cord the same localising value as the inverted supinator jerk for the cervical cord. ER -