Foot Drop Secondary to Ankle Sprain in Two Paediatric Patients: A Case Series

Abstract

Foot drop secondary to common peroneal neuropathy is frequently due to trauma or external compression. Ankle sprains are a rarer cause of this pathology and are extremely uncommon in the paediatric population. We present two cases of acute isolated unilateral foot drop in children, both following minimal trauma. Prompt investigation with magnetic resonance imaging (MRI), electromyography (EMG) and nerve conduction studies can assist in localising the level of the lesion and indicate prognosis. Both patients made a full recovery with the use of ankle-foot orthoses and physiotherapy. This case series highlights that although rare, common peroneal nerve palsy can occur in children following relatively minor trauma. Clinicians should identify this pathology early with a detailed clinical assessment and focussed investigations to increase the potential for a favourable recovery and avoid secondary problems.