Closed treatment of canine nonunions by controlled compression and distraction using an Ilizarov fixator: a preliminary study.

The Ilizarov fixator was used for closed treatment of canine nonunions by controlled compression and distraction. The fibrous matrix and cartilage formed within the nonunion site transformed to osteoid and bone with increased vascularity. Healing was demonstrated by substantial bone bridging the nonunion at 6 weeks.