Getting on Your Nerves: Spine Numbering Utilizing Lumbosacral Plexus Anatomy

M.E. Peckham, S.E. Stilwill, M.K. Mills, T.A. Hutchins, R.K. Sanders, and L.M. Shah

View Article on Neurographics Website

Date of Activity Release: Jun. 1, 2018
Date of Activity Expiration: Jun. 1, 2021

Target Audience:
Intended for neuroradiologists and neuroradiology trainees with varying degrees of experience.

Learning Objective:
To review various imaging approaches for spine numbering; to discuss using nerve morphology on conventional MR imaging for spine numbering; and to explain the importance of spine numbering in radiology reports.

Multiple anatomic markers have been used to number the lumbar spine when complete spine imaging is unavailable. In this review, we discussed the current methods of spine numbering and reviewed a recently validated neuroanatomic method of spine numbering that uses the MR imaging of lumbosacral plexus anatomy for localization. This method is promising, not only in its accuracy in localizing the L5 vertebral body, but also in its ability to aid preoperative planning for the interventionalist/surgeon by anatomically delineating the exiting nerves. With a solid foundation in lumbosacral plexus anatomy, this method can be easily applied and communicated by the radiologist.

Commercial Support
No commercial support was received for this activity.

Credit Designation Statement

The American Society of Neuroradiology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

The American Society of Neuroradiology designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credit(s)TM. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Method of Physician Participation:
Each participant will review the corresponding Neurographics article located at Upon completion, each physician will complete and pass a post-test with a score of at least 80% to receive a CME certificate.

All individuals in control of content have disclosed the following relevant financial relationships. All of these relationships were treated as a conflict of interest, and have been resolved (C7 SCS 6.1-6.2, 6.5)

Authors have no relevant financial relationships.





Barton Branstetter 

Editor in Chief

None, N/A

Adam Flanders

Deputy Editor

Royalties, Lippincott Williams and Wilkins

Robert Quencer 

Consulting Editor

None, N/A

Mark Mullins

Associate Editor

Non-remunerative position, AUR6

Meng Law

Associate Editor

Stockholder, Clinical Imaging

Edward Escott

Associate Editor

Grant, Atherysys, Inc.; Royalties, Thieme Medical Publishers

Scott Faro

Associate Editor

None, N/A

Tina Young Poussaint

Associate Editor

None, N/A

Dheeraj Ghandi

Associate Editor

Grant, Arstasis, Axera Inc.; Consultant, Covidien, EV3

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