Hybrid fixation for primary TKA

Hybrid total knee arthroplasty (TKA) was introduced in the 1980s as a method of fixation that would combine the established successes of biological fixation of the femoral component and cemented fixation of the tibial and patellar components. Results of the hybrid TKA design have been excellent in the short and intermediate term, rivaling that of all cemented techniques. Nevertheless, long-term results are mixed at best. It is the investigators contention that with newer porous metal technologies, cementless fixation may be enhanced and ultimately, lead to the disappearance of the hybrid TKA design and leave surgeons with 2 main options: all cemented and all cementless techniques in TKA.