Fibular Shaft Allograft Support of Posterior Joint Depression in Tibial Plateau Fractures

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Posterior depression of the lateral articular surface of the tibial plateau can be difficult to elevate and support with morselized bone graft and internal fixation. Progressive collapse after open reduction and internal fixation has been described and can lead to failure in treatment. A standard anterolateral approach to the tibia may not allow direct reduction and stabilization of posterolateral joint depression given the anatomic barriers of the fibular collateral ligament and the proximal tibiofibular articulation. Posterolateral approaches to the tibial plateau have been described and may allow direct reduction of the articular depression. These approaches, however, require dissection close to the common peroneal nerve, and some approaches also require a proximal fibular osteotomy. The use of an intraosseous fibular shaft allograft as an adjunct to open reduction and internal fixation in select cases of depressed posterolateral tibial plateau fractures allows both reduction of the joint and stabilization of the articular segment through a single approach familiar to many orthopaedic surgeons.

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