Ilizarov Apparatus

The Ilizarov apparatus is named after the orthopedic surgeon Gavriil Abramovich Ilizarov from the Soviet Union, who pioneered the technique. It is used in surgical procedures to lengthen or reshape limb bones; to treat complex and/or open bone fractures; and in cases of infected non-unions of bones that are not amenable with other techniques.

The procedure consists of an initial surgery, during which the bone is surgically fractured and the ring apparatus is attached.  As the patient recovers, the fractured bone begins to grow together. While the bone is growing, the frame is adjusted by means of turning the nuts, thus increasing the space between two rings.  As the rings are connected to opposite sides of the fracture, this adjustment, done four times a day, moves the now-healing fracture apart by approximately one millimeter per day.  The incremental daily increases result in a considerable lengthening of the limb over time.  Once the lengthening phase is complete, the apparatus stays on the limb for a consolidation period. The patient is able to fully weight bear on the Ilizarov frame, using crutches initially and pain is lessened.  Once healing is complete, a second surgery is necessary to remove the ring apparatus.  The result is a limb that is significantly longer.  Additional surgery may be necessary, in the case of leg lengthening, to lengthen the Achilles tendon to accommodate the longer bone length.  The major advantage of this procedure is that because the apparatus provides complete support while the bone is recovering the patient can remain active aiding recovery. (from Wikipedia)

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