Adult-Onset Primary Focal Foot Dystonia Improved with Custom Made Ankle-Foot Orthosis

ABSTRACT

The foot or lower extremity is rarely the initial site in adult-onset dystonia, whereas dystonia in children often begins in the foot. Isolated lower extremity dystonia in adults is rarely on a primary basis. Oral anti-dystonic medications have been found unsatisfactory in providing adequate symptomatic relief. On the other hand, botulinum toxin injections have been reported as beneficial. It is also known that personalized orthosis can be an effective solution for patients of dystonia. The purpose of this report is to demonstrate a case of primary focal foot dystonia that was effectively treated with botulinum toxin injection and the custom-made ankle-foot orthosis.