Dorsoventral organization of sensory nerves in the lumbar spine as indicated by double labeling of dorsal root ganglion neurons

Dorsoventral organization of the primary sensory system in the lumbar body trunk was suggested from the proportion of DRG neurons with dichotomizing afferent fibers innervating the lumbar disc and other tissues. The present findings provide a pathomechanism of groin referred pain in lumbar disc disorders.