Three varieties of the congenital genu recurvatum exist: 1. congenital genu recurvatum with isolated hyperextension of the knees; 2. congenital genu recurvatum with subluxation of tibia; 3. congenital genu recurvatum with anterior dislocation of the knees.
The congenital genu recurvatum may be an isolated finding or associated with some syndromes (for example Ehlers Danols syndrome, Marfan syndrome, or Larsen syndrome). Arthrogryposis multiplex congenita, spastic cerebral palsy and cervical myopathy are other conditions associated with the genu recurvatum.
Postnatal management of the congenital genu recurvatum is conservative. Surgical treatment is the last option.
Images 1, 2: The image 1 shows uterine septum which probably contributed to the finding of the congenital genu recurvatum. The image 2 shows large ventricular septal defect at the level of the four-chamber view of the heart.