[Idiopathic talus necrosis in an infant].

A case of a spontaneous osteonecrosis of the talus in a 22 months old girl is reported. Under treatment in a non-weight-bearing leg brace the talus recovered without remaining deformities. Osteomyelitis, tumors, neurogenic arthropathy and traumatic origin were taken into diagnostic consideration, but could be excluded by clinical, radiological and laboratory examinations. According to our knowledge an idiopathic osteonecrosis of the talus occurring in an infant of 22 months has never been reported before.