[Ultrasound follow-up of bone lengthening osteotomy].

We report about the possibilities of sonography with regard to postoperative control of limb-lengthening. During the phase of distraction we can show the amount of lengthening with a 5 or 3.5 MHZ linear transducer. We can measure the lengthening or the axial deviation with a sonography as exactly as with an x-ray. X-rays can be saved and the x-ray doses can be reduced.