Arthroscopic Retrograde Fixation of A Hoffa Fracture With an Accompanying Medial Plateau Fracture

Unicondylar lateral coronal plane fractures (Hoffa fractures) are uncommon and commonly treated with open reduction and internal fixation through a wide lateral or parapatellar approach because of difficulty in accessing the fracture. The accompanying medial tibial plato fracture is also an extreme case, and such a fracture pattern has not been reported in the literature so far. In our case report, after a motor vehicle accident, a 32-year-old man suffered a Hoffa fracture and a medial tibial plato fracture of his left knee. Reduction and fixation were performed under arthroscopic visualization through the standard portals. Reduction was achieved using a pair of towel forceps as a fulcrum to elevate the fragment through the lateral portal. After confirmation of anatomic reduction with arthroscopy, 2 divergent headless compression screws were inserted into the fracture through an accessory lateral portal with the knee hyperflexed. The concomitant medial tibial plato fracture was treated with a buttress plate, and reduction was confirmed arthroscopically. The fracture healed clinically and radiographically at 3 months, and the patient had no limitation of motion and was back at work. Thus, an undesired extensive arthrotomy over the joint was avoided with this technique for a better outcome.