exhR0002-nl

This medical illustration series displays the normal anatomy of the spinal meninges showing the dura mater, arachnoid and sub-arachnoid space. The remaining three illustrations portray the progression of arachnoiditis showing A. The irritated arachnoid layer and spinal nerves; B. Increased scarring and adhesions bind the arachnoid and begin encapsulating the spinal nerves; and C. Calcification and hardening of the spinal nerves.