Ortho Dx: Pain and limping in a young child

A 2-1/2-year-old child presents with limping of the right leg following an unwitnessed injury. On examination the child complains of tenderness over the tibial shaft; there is no swelling or ecchymosis. The child refuses weight-bearing on the left side. Examination of the left hip and ankle are within normal limits. Anteroposterior (AP) and lateral radiographs are shown above.

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