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J Pediatr Orthop. 1985 Jul-Aug;5(4):456-62.

Consequences of an osteogenesis imperfecta diagnosis for survival and ambulation.


In osteogenesis imperfecta, time of initial fracture and radiographic appearance of long bones and ribs at time of initial fracture provide good prognostic indicators concerning survival and ambulation. Osteogenesis imperfecta congenita (OIC) comprises those patients with intrauterine and/or birth fractures. Radiographs of newborns with OIC-A show short, broad, and crumpled femurs and ribs, whereas initial radiographs of patients with OIC-B demonstrate bones with normal contours in spite of fractures. Osteogenesis imperfecta tarda (OIT) comprises those patients who fracture initially after birth. Patients with OIT-A fracture initially before walking begins, and patients with OIT-B after walking has begun. In OIC-A, 15 of 16 (94%) died; one survived but was wheelchair bound. In OIC-B, only two of 27 (8%) died, with 59% in wheelchairs and 33% ambulatory. No patients with OIT died. In OIT-A, 33% were in wheelchairs and 67% were ambulatory. In OIT-B, 100% were ambulatory.

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