title: Inverted knee jerk: a neglected localising sign in spinal cord disease.
abstract: 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.
mesh_terms: D000328:Adult; D004576:Electromyography; D005260:Female; D006801:Humans; D007717:Knee / Q000503:physiopathology*; D008875:Middle Aged; D012021:Reflex, Abnormal / Q000503:physiopathology*; D012023:Reflex, Monosynaptic; D012026:Reflex, Stretch; D013118:Spinal Cord Diseases / Q000175:diagnosis*