The accessory soleus muscle causing tibial nerve compression neuropathy

A case report

Abstract

The accessory soleus muscle is a rare anatomic variant which may present as a mass in the posteromedial aspect of the ankle, causing compression of the tibial nerve or an exertional compartment syndrome. It should be considered in the differential diagnosis of all soft tissue masses in this area.

Treatment options include conservative treatment, excision of the whole muscle and fasciotomy. We report a case of an accessory soleus in a cyclist presenting with activity-related paraesthesia in the foot and discuss the pathology and management of this condition.