Knee Osteoarthritis with Old Untreated Patella Fracture Treated with Single Stage Total Knee Arthroplasty - A Case Series of Two Cases.

Introduction: Total knee arthroplasty (TKA) is one of the most successful procedures for osteoarthritis (OA), but when associated with an old patella fracture, the knee arthroplasty becomes complex due to discontinuity in extensor mechanism. Moreover, in elderly patients, early mobilization and avoiding multiple surgeries are important to prevent associated morbidity. This is the first instance of a case series being reported where an untreated patella fracture >3-months-old with knee OA has been managed with single stage TKA.