Spinal Evoked Potentials in Infants with Myelomeningocele

Spinal SEPs were recorded in 8 infants with myelomeningocele, in response to posterior tibial, peroneal and femoral nerve stimulation. Small, polyphasic potentials could be recorded from the neural plaque in all cases studied. Spinal SEPs were frequently absent, except with stimulation of the femoral nerve. Spinal SEPs generally correlated well with clinical sensory levels, but were obtained from levels lower than the sensory level in 2 cases.