Tibial physeal changes in renal osteodystrophy: lateral Blount's disease.

In a group of 27 children with chronic renal failure and renal osteodystrophy, we identified eight patients with significant involvement of the proximal tibial physis (15 knees). The radiographic changes observed were analogous to those observed in tibia vara (Blount's disease) but involved the lateral physis rather than the medial physis. This observation is offered as further evidence that such changes are related to eccentric weight-bearing rather than alternative etiologies such as trauma, infection, or heredity.