Periprosthetic Fracture through a Unicortical Tracking Pin Site after Computer Navigated Total Knee Replacement

Abstract EN

A rare complication from computer-navigated total knee arthroplasty is a fracture through the insertion site of a tracking pin.

These pins are inserted across the femoral and tibial shafts either bicortically, transcortically, or unicortically and have a reported fracture incidence of 1.38%, with all published cases occurring after bicortical pin placement.

In this case, a 60-year-old female suffered a femoral shaft fracture through a unicortically inserted computer navigation tracking pin 6 weeks after total knee arthroplasty.

Her fracture was successfully fixated with an intramedullary nail with retention of the knee prosthesis.

This case is important as it records the risk for a postoperative fracture through a unicortically inserted computer navigation pin.