Minimally Invasive Quadriceps-Sparing Cruciate-Retaining Total Knee Arthroplasty

The extensor mechanism is a functional unit consisting of the quadriceps muscle, quadriceps tendon, the patella, and patellar tendon. Weakness or dysfunction of the extensor mechanism significantly compromises the function of both the native and replaced knee. Considering the importance of the extensor unit to the function and recovery of patients undergoing total knee arthroplasty, a variety of surgical techniques have been introduced to limit injury to the extensor mechanism.