A multiple ring bone fixation device, normally used to lengthen and straighten the extremities.
Named for its creator, a Russian orthopaedic surgeon named 'Ilizarov'*.


http://en.wikipedia.org/wiki/Ilizarov_apparatus

*Patients have been known to mistakenly call the construct 'lizard rods'. In this image, a plastic lizard
model has been mounted in an Ilizarov frame. Only the color has been photoshopped.