FATCO syndrome

FATCO syndrome (Fibular Aplasia, Tibial Campomelia, and Oligosyndactyly) is an extremely rare congenital malformation syndrome characterized by a combination of skeletal abnormalities primarily affecting the lower limbs and feet. The acronym FATCO describes its cardinal features: absence (aplasia) of the fibula, bowing (campomelia) of the tibia, and fusion or reduction in the number of toes (oligosyndactyly). The condition is present at birth and is typically identified during the neonatal period or prenatally via ultrasound imaging. The skeletal system is the primary body system affected. Patients may present with significant limb length discrepancy, abnormal curvature of the lower leg bones, and foot malformations including missing or fused digits. In some reported cases, upper limb anomalies such as oligodactyly or syndactyly of the hands have also been described, though lower limb involvement is the hallmark of the condition. The severity of the malformations can vary between affected individuals, and the condition may be unilateral or bilateral. There is no cure for FATCO syndrome, and management is primarily supportive and surgical. Treatment typically involves orthopedic interventions aimed at correcting limb deformities, addressing limb length discrepancies (through limb lengthening procedures or prosthetic fitting), and improving functional mobility. Reconstructive surgery for the feet and toes may also be considered. A multidisciplinary approach involving orthopedic surgeons, physical therapists, and rehabilitation specialists is generally recommended. Due to the extreme rarity of this condition, with only a small number of cases reported in the medical literature, there are no established clinical guidelines, and management is individualized based on the specific pattern and severity of malformations in each patient.

Common questions about FATCO syndrome