Siatica Nerve Pain from Left Butt to Ankle You are here: Orthoped > Back and Spine (Chiropractor) Questions > Siatica Nerve Pain from Left Butt to Ankle admin 0 Comment Back and Spine (Chiropractor) Questions MRI indicated little bulging and no narrowing of canal. Related Postsback pains (1) Disk desiccation, protusion and foraminal narrowing (1) MRI Results (1) MRI interpretation (3) bulged disk (2) Disc desiccation (38)