Advertisement for orthosearch.org.uk
Orthopaedic Proceedings Logo

Receive monthly Table of Contents alerts from Orthopaedic Proceedings

Comprehensive article alerts can be set up and managed through your account settings

View my account settings

Visit Orthopaedic Proceedings at:

Loading...

Loading...

Full Access

WHAT IS THE DISTRIBUTION OF PAIN ATTRIBUTABLE TO LUMBO-SACRAL NERVE ROOT COMPRESSION?



Abstract

Aim: To determine the distribution of pain which can be most reliably attributed to individual lumbo-sacral nerve root compression.

Introduction: Patients are selected for nerve root decompression based on a correlation between symptoms, signs and imaging findings. However, the belief that a given pain may be attributable to a specific nerve root varies widely between surgeons. Some will only consider decompressing a nerve root in the presence of pain radiating in a classical dermatomal distribution whilst others consider nerve root compression to be a cause of back, buttock or thigh pain.

We sought to determine the distribution of pain which significantly improves following decompression of lumbo-sacral nerve roots.

Methods: Data from consecutive patients undergoing lumbo-sacral nerve root decompression between 2002 and 2005 was prospectively analysed. Inclusion criteria were:

  1. uni- or bilateral single level nerve root decompression

  2. Three month post-operative visual analogue pain scores of less than 2 (0 = no pain, 10 = worst pain).

For individual nerve roots the distribution of pain described on post-operative pain drawings was sub-tracted from that described on pre-operative pain drawings. This produced a composite pain drawing demonstrating the distribution of pain most reliably improved by decompressing a particular nerve root.

Results: 52 cases fulfilled the inclusion criteria. There were 6 L4, 36 L5 and 17 S1 nerve root decompressions. The distribution of dramatically improved pain following nerve root decompression did not follow the classic dermatomal patterns described in standard text books.

Conclusions:

  1. Pain as a consequence of lumbo-sacral nerve root compression does not appear to be restricted to classical dermatomal distributions.

  2. Lumbo-sacral nerve root compression may be a significant cause of back pain.

  3. In order to decide who is likely to benefit from lumbo-sacral nerve root decompression further characterisation of the pain distribution attributable to lumbosacral nerve root compression is required.

Correspondence should be addressed to Sue Woordward, Britspine Secretariat, 9 Linsdale Gardens, Gedling, Nottingham NG4 4GY, England. Email: sue.britspine@hotmail.com