Abstract
Histologic evidence of damage to the proximal tibial physis of immature rats was documented in greater than 30% of hind limbs subjected to a valgus and compressive force. The lesion was consistent with that theorized for the Salter-Harris Type V fracture. Two additional groups of immature rats were subjected to the same insult and followed to maturity. One of the groups sustained an intentional concomitant ipsilateral femoral shaft fracture. No tibia demonstrated a growth disturbance in the absence of the femoral fracture, while similar angular deformities were noted in four tibiae (13%) in the presence of a fractured femur. Previously theorized traumatic physeal injuries, implicated in subsequent growth disturbances and seen clinically in association with ipsilateral long bone fractures, were identified in this animal study.
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