Bulbocavernosus Reflex

Bulbocavernosus Reflex

A test of the integrity of the S2, S3 and S4 spinal roots, looking for contraction of the anal sphincter (may be felt with a gloved finger in the rectum) when squeezing the glans penis or clitoris. The reflex may be abolished in lesions of the cauda equina.

Cross References

Cauda equina syndrome; Reflexes