INTRA-EXTRA ARTICULAR REDUCERS FOR PERCUTANEOUS PATELLAR OSTEOSYNTHESIS

摘要

The invention relates to an intra-extra articular reducer for percutaneous patellar osteosynthesis, intended for a disruption of the extensor apparatus and displaced patella fractures of the knee. The invention is formed by two main arms hinged together with a movable "cross" mechanism which closes both arms in parallel, including upper arms that are extra-articular and are in contact with the skin and the anterior portion of the proximal or distal fragment of the disruption of the extensor apparatus and a lower arm formed by an intra-articular Steinmann pin. Both arms close in parallel in order to contain the fracture fragments or the quadriceps and patellar tendons, thereby securing the extensor apparatus on the proximal and distal portion thereof in order to reduce the extensor apparatus manually. Once reduced, a percutaneous osteosynthesis system can be put in place in order to assist in the longitudinal compression of the extensor apparatus and the final fixation thereof. The reducer facilitates surgical technique in the reduction of patella fractures and can be used to perform more effective surgery in the associated internal reduction and fixation technique.