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IS THE NEW ONSET OF LOW BACK PAIN IN OVER 55 YEAR OLD PATIENTS A USEFUL “RED FLAG” SIGN?



Abstract

Background: Guidelines for the management of Low Back Pain (LBP) consistently recommend that the initial assessment focuses on the detection of serious spinal pathologies. In 1994 the UK Clinical Standards Advisory Group introduced the concept of “red flags”. One of these red flags is the first presentation of LBP in people over the age of 55 years. The aim of this study was to investigate the incidence of serious spinal pathologies in patients presenting with new onset of LBP over the age of 55 years.

Method/Results: This was a prospective analysis of all patients presenting to a secondary care spinal triage service over a 3 year period (2005–2008). During the study period, in excess of 3000 patients were seen. Of these, a total of 70 patients presented with a first onset of LBP aged over 55 years and had no other red flags. Analysis of this group of patients revealed 2 serious spinal pathologies. Both of which were osteoporotic vertebral compression fractures. Both patients were over age 75. In addition 1 patient had severe central lumbar canal stenosis. Therefore, 2.3% of patients presented with the first onset of LBP > 55 years, of which 2.9% has serious pathology. Patients > 55 years with cancer or infection had other red flags in addition.

Conclusion: In isolation the first onset of LBP over the age > 55 accounts for a small percentage of this secondary care population, of which 2.9% had vertebral compression fractures. Further research into the clinical value of this independent red flag or its added value in combination with other red flags is recommended.

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