Measurement of femoral anteversion in children by ultrasonics

: After reviewing the anatomy of the frontal geometry of femur and values for femoral anteversion during growth, an ultrasound method is described for measurement of femoral anteversion. The principle underlying the technique is the use of a spirit level fixed to a bar probe and an effective contention in rotation of lower limbs, this ensuring validity of results even in infants. Analysis of findings in a preliminary series of 10 infants (20 hips), age range 2 to 16 years, with torsion anomalies of lower limbs, showed values obtained to be totally superimposable on those provided by a CT scan.