Fractured fibular sesamoid: a case report.

Dr. Glass believes fracture of the fibular sesamoid to be quite uncommon, and he discusses its occurrence in the absence of direct trauma to the foot. A fractured sesamoid may be distinguished from a bipartite or tripartite sesamoid by the absence or presence of pain, which occurs with a fractured sesamoid but not with a bipartite or tripartite sesamoid. The appearance of the line of division and the absence or presence of a periosteal reaction are also helpful in diagnosis.