Abstract
1. A case of Fanconi's syndrome, with evidence of renal tubular dysfunction, is reported.
2. Healing of the rachitic lesions followed massive doses of calciferol. There was simultaneous improvement in the biochemical state. This case is probably unique in that the amino-aciduria disappeared.
3. Two-stage osteotomies were undertaken for the correction of severe bowing of the tibiae.
4. No toxic symptoms have developed so far from the calciferol therapy.