Retrieval study of tibial baseplate fracture after total knee arthroplasty.

Twenty-five cases of fractured metal tibial baseplates were reviewed from retrieved knee arthroplasty. A total of 74 cases have been reported, including the 25 in this series. Baseplate fracture is an avoidable problem with careful choice of prosthesis, attention to surgical detail, and satisfactory postoperative follow-up. There is a relatively short duration of symptoms before fracture, (mean, 10.8 months; range, 1-36 months). Patients should also be advised to self-report if there is sudden onset of pain or any symptoms of instability or mechanical failure, such as squeaks, clicks, or swelling. Early revision should be considered if there is concern about potential baseplate fracture as delay may compromise the ultimate result. A classification for these baseplate fractures is proposed, and the multifactorial etiology is discussed.