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Spine

THORACIC SPINAL CORD HERNIAS: OPERATIVE TECHNIQUE AND FOLLOW-UP IN 4 CASES

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



Abstract

Thoracic spinal cord herniation is a relatively uncommon syndrome of anterior hemi cord dysfunction. However it has been reported in literature with increasing frequency over the last decade. Since the initial description of this clinical entity by Weitzman et al. in 1974, more than 100 cases have been described.

Although clinical features may vary considerably, as a clinical syndrome it is now widely recognized, and remains a potentially treatable cause of thoracic cord dysfunction.

Anterior spinal or thoracic cord herniation remains an uncommon yet a potentially treatable cause of thoracic myelopathy. Patients usually present in their middle ages, and literature suggests that there is a female predominance. The presenting symptom is usually a Brown Sequard syndrome, although other symptoms suggestive of thoracic cord dysfunction may be present. Although the symptoms are insidious the condition may lead to progressive paraparesis. The herniation is usually through a dural defect, the cause of which open to speculation. Operative treatment is advised, as the outcomes are generally favourable.

As part of a continued focus on this clinical syndrome we describe below a series of 4 patients with thoracic spinal cord hernias that presented to our neurosurgical service over the past 3 years and our experience in the treatment of this condition. Apart from one patient, in whom there possibly was an iatrogenic factor, the rest were all purely idiopathic. All the patients underwent surgical treatment and their outcomes were generally favorable.