Revistes Catalanes amb Accés Obert (RACO)

Accessory soleus muscle in an athlete. Presentation of a case and a literature review

Francisco J. Rubio, Luis Franco, Manuel J. Montero, Paola Ugarte, Alfredo Valero


The incidence of an accessory soleus muscle, according to autopsy studies, ranged from 0.5 to 6.0% of the population.

The typical presentation is a soft mass in the posteromedial distal third of the leg, which increases in size with physical activity, especially plantar flexion. It is accompanied by pain with exercise in 67% of reported cases.

The treatment of choice is conservative, but when it causes compartment syndrome, fasciotomy should be performed. If a patient has symptoms of claudication or nerve compression, a complete excision of the muscle is required.

We report the case of an athlete who had a symptomatic accessory soleus muscle, which was studied by standard X-ray, ultrasound and magnetic resonance imaging (MRI).

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