Arnold Chiari Malformation with Holocord Syringomyelia Presenting as Unilateral Foot Drop: A Case Report

Foot drop is a common problem encountered in the clinical practice of a medical rehabilitation specialist. The aetiology of foot drop is usually lower motor neuron, either by the affection of peripheral nerve or the lower lumbar roots. However other rare differential diagnosis of foot drop should be borne in mind while evaluating such a patient. A detailed neurological evaluation along with supportive investigations like electrodiagnosis and magnetic resonance imaging often helps in differentiating such a cause. Here we report a case of holocord syringomyelia, secondary to Arnold Chiari malformation type 1, presented as unilateral foot drop.