Interprosthetic Fracture of Distal Femur around Total Knee Replacement with Pre-Existing Dynamic Condylar Screw

Abstract

Treatment of interprosthetic fracture of distal femur around total knee replacement is difficult. Preexisting hip implants further increase the technical challenges. In this case report, we present an 85-year-old patient who suffered from a displaced distal femur fracture with a pre-existing dynamic condylar screw and total knee replacement. Internal fixation with distal femur locking plate and incorporation of the locking plate with the pre-existing dynamic condylar screw provided a good treatment option for this difficult problem. It avoided the possible complication associated with removal of pre-existing implant and allowed sufficient overlap of the two plates to prevent any stress risers or fracture.