Seventeen-year-old girl with history of neurofibromatosis and 6-week history of acute knee dislocation and inability to walk. A and B, Anteroposterior and lateral radiographs of knee showing posteromedial (tibia) knee dislocation with medial dislocation of patella. C and D, Anteroposterior and lateral radiographs at time of open reduction and internal fixation with smooth Steinmann pin through quadriceps mechanism of femur and tibia. E and F, Postoperative anteroposterior and lateral radiographs showing mild persistent lateral subluxation but good reduction of knee and patellar dislocations.