This case highlights a fracture of a modern tibia basetray. The patient is a 52-yearold female who underwent a total knee arthroplasty that had catastrophic posterior medial polyethylene wear 5-years following the original surgery. She underwent a polyethylene exchange to an anterior constrained style polyethylene and a year and a half later presented with severe medial pain and a locked knee. Radiographs initially demonstrated significant anterior translation of the tibia on the femur and she was indicated for revision surgery. Radiographs the day prior to revision demonstrate a fractured posterior medial corner of the base tray and a disengaged polyethylene in the suprapatellar pouch. Revision TKA was undertaken and given the inability to control AP translation with a none or semi constrained knee design, reconstruction with a rotating hinge knee was performed.