What structure does the lead pass through to access the DRG in the neural foramen?

The lead accesses the dorsal root ganglion (DRG) through the intraforaminal structure within the neural foramen. The neural foramen is an opening between the vertebrae where spinal nerves exit the spinal column. The intraforaminal area specifically refers to the space within the foramen where the nerve root and associated ganglion are located. This area is crucial for the placement of leads in procedures like spinal cord stimulation, as it allows direct access to the nerve's entry point for effective pain management and intervention.

When considering the other options, the intervertebral disc is situated between vertebrae and does not provide a direct path to the DRG. The epidural space is found around the dural sac but also does not serve as a conduit for accessing the DRG itself. The dura mater is the outermost layer of the meninges covering the spinal cord and root structures, but it needs to be navigated to get to the intraforaminal space and access the DRG directly. Thus, the most accurate route for the lead's placement in this context is through the intraforaminal space.