Facial femoral syndrome is a rare congenital disorder.^[1] It is also known as femoral dysgenesis, bilateral femoral dysgenesis, bilateral-Robin anomaly and femoral hypoplasia-unusual facies syndrome. The main features of this disorder are underdeveloped thigh bones (femurs) and unusual facial features.^[2]

• Facial^{[citation needed]}
  • Lips - Cleft palate and/or thin lips. Prominent philtrum
  • Jaw - Small and/or retracted jaw (micrognathia/retrognathia)
  • Ears - Small or virtually absent ears (microtia/anotia)
  • Eyes - Upwardly slanting eyelids
• Skeleton^[3]
  • Short limbs (micromelia)
  • Femurs - absent/abnormal
  • Fused bones of the spine (sacrum and coccyx)
  • Deformation of the foot that may be turned outward or inward ((talipes)-varus/valgus)
  • Extra fingers or toes (polydactyly)
  • Abnormal vertebral size or shape
  • Short stature (dwarfism)
• Others^{[citation needed]}
  • Genitourinary abnormalities
  • Underdeveloped lungs
  • Patent ductus arteriosus

Of note intellectual development typically is normal.

The cause of this condition is not known. A genetic basis is suspected. More than one case have been reported in three families.^{[citation needed]} It seems to be correlated to maternal diabetes mellitus in about a third of patients. There also have been links to maternal drug exposure, viral infections, radiation, and oligohydramnios.^[3]

The diagnosis is based on the combination of unusual facial features and the dysplastic or absent femurs.^[3]

Diagnosis may be made antenatally.^[4]

There is no known specific treatment for this condition. Management is supportive.^[3]

This is a rare disorder with 92 cases reported up to 2017.^[1]

This condition was first described in 1975.^[5]