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Spine

ANALYSES OF PAIN DISTRIBUTION IN THORACO-LUMBAR FRACTURES AND ITS SIGNIFICANCE

Britspine, British Scoliosis Society (BSS), Society for Back Pain Research (SBPR), British Association of Spine Surgeons (BASS)



Abstract

To analyse the pain distribution in the acute and chronic phase following thoracolumbar fractures.

Prospective observational study

39 patients with fractures between T11 and L2, with no neurological deficit, were treated conservatively. Strict inclusion and exclusion criteria were applied. All had X-rays and MR imaging (whole spine) at post-injury and one-year follow-up.

The patients documented their pain distribution using pain drawing, along with 10 other domains of pain and functional outcomes for a period over 12 months. The pain distribution was analysed. The association of distal pain distribution to - other associated injury, resultant kyphosis, Pre-existing or increase in disc degeneration at the lower non-injured disc levels – were analysed and reviewed

The most common site of the pain distribution in both the acute (90%) and chronic phase (97%) was distal to the fracture (regions - iliac crest, lumbosacral junction and buttock). Factors mentioned above that could be related to distal pain distribution did not show any significant correlation (P>0.5) with different domains of pain outcome.

Some of the commonly believed reasons for distal pain distribution like resultant kyphosis and associated disc/facet pathologies were not supported by our study findings. The distal pain distribution corresponds to the scelerotomal referred pain mapping, which could be the probable explanation. Thoracolumbar pathologies could be the source of pain in patients complaining of low back symptoms. Distal pain distribution of spine pathologies should not be attributed as functional.