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Circular External Fixation for Distal Femoral Physeal Injury: A Case Report
Abstract
Background:
Distal femoral physeal injuries are a challenging clinical scenario because the injuries have a high risk of growth disturbance. The selected treatments include closed reduction and cast immobilization, percutaneous pin fixation, and cannulated screws or internal fixation, but these treatments have some complications. Circular external fixation enables rigid immobilization and walking with full weight bearing. To the best of our knowledge, there is no article on the results of using circular external fixation for distal femoral physeal injury. This case is the first in which circular external fixation for distal femoral physeal injury is used.
Case Presentation:
A 9-year-old boy was injured in a skiing accident, and his injury was a Salter-Harris type II fracture of the distal femoral epiphysis. We immediately performed percutaneous pin fixation with circular external fixation under general anesthesia. After surgery, he was allowed to walk with full weight bearing. One year after surgery, he had no pain, and his knee regained full extension and 140°flexion.
Conclusion:
We consider circular external fixation to be an effective treatment option because of its rigid immobilization without injury to the plate. However, we and patients must fully acknowledge its difficulties (i.e., pin-site problems, neurologic injury, vascular injury, joint stiffness, and pain, and difficulty sleeping).