Pathologic fractures in severely handicapped children and young adults.

The incidence (42%) of vitamin D abnormalities is high in severely handicapped children and young adults who sustain fractures, especially those who sustain multiple fractures. Fractures occur primarily in the lower extremity and heal with simple immobilization. In patients with normal vitamin D levels, a history of a significant traumatic event should be identified and child abuse ruled out. Vitamin D-deficient patients respond to nutritional and vitamin D supplementation, with decreased fracture incidence.