We reported a case of ossification at the insertion of both Achilles tendons which is reportedly rare condition.
The patient, forty-seven years old, suffered from severe pain at the insertion of bilateral Achilles tendons. He had no systemic, metabolic, or inflammatory disease and there was no history of trauma or surgery. He was successfully treated by excision of ossified mass in both Achilles tendons.
In this case, the etiology of ossification may be secondary to minor trauma at the insertion of Achilles tendon. The ossified mass is usually asymptomatic and needs no treatment, but if it becomes painful, the excision of it should be considered. The recurrence of ossification is rare, but the careful course observation of this condition should be required.
