Short Term Results of Osteosynthesis of Femoral Neck Fractures with Hansson Pin

We evaluated the short-term results of the treatment of femoral neck fractures using the Hansson pin. Twelve patients (two males and 10 females, mean age: 74.5) were included in this study. The fractures were classified according to Garden. Stage I and II constituted undisplaced (nine patients) and stage III and IV displaced fractures (three patients). The clinical evaluation was based on the fracture union rate, walking ability, and complications (osteonecrosis, redisplacement). In addition, the Garden alignment index and pin position were measured radiographically. Nine patients healed without complications. Three patients did not achieve bony union. Complications consisted of osteonecrosis of the femoral head in one case, and redisplacement in two cases. Poor fracture reduction and malposition of the pin are associated with redisplacement of fracture.