Arthroscopically assisted retrodrade intramedullary fixation for fractures of the distal femur: technique, indications and results.

The purpose of this study is to present our experience with the technique, the problems and the potential pitfalls of arthroscopically assisted retrograde femoral nailing for supracondylar femoral fractures. In a 2-year period, nine patients (seven women, two men, average age 72 years) with supracondylar femoral fractures were treated in our department with a retrograde nailing under arthroscopic control. The mean operative time was 63.8 min (42-84 min) and the mean follow up period was 34.5 months (ranged 12-52). Solid union of the fracture was achieved in all patients without additional intervention, in 14 weeks (range 12-18). There was no malalignment (more than 5 degrees in any plane) or implant failure. In conclusion we believe that the arthroscopically assisted technique is a very good method to treat supracondylar fractures of the femur. It has very low morbidity since the knee is not opened through the operation, and the surgeon has the ability to inspect the joint for any additional damage. It is very helpful in multitrauma patients and in young patients, where the precision of the entry point is critical. However, we do not recommend the technique in intraarticular fractures because the reduction is difficult and the fixation is performed with safety only under direct vision.