[Tarsal tunnel syndrome caused by granulomatous arteritis of an artery supplying the posterior tibial nerve. Apropos of a case].

A patient presented with a tarsal tunnel syndrome due to granulomatous arteritis of the artery supplying the tibial nerve. The pathogenicity of these types of lesion is discussed based on findings during operation, and a logical therapeutic attitude established: early opening of the tarsal tunnel with interfascicular neurolysis of the tibial nerve.