Kinematically Aligned Total Knee Arthroplasty with Patient-Specific Instrument.

摘要: Kinematically aligned total knee arthroplasty (TKA) is a new alignment technique. Kinematic corrects arthritic deformity to the patient's constitutional in order position femoral and tibial components, as well restore knee's natural tibial-femoral articular surface, alignment, laxity. motion moves around single flexion-extension axis of distal femur, passing through center cylindrically shaped posterior condyles. Since it can be difficult locate cylindrical with conventional instrument, patient-specific instrument (PSI) used align kinematic axes. PSI was recently introduced technology goal improving accuracy operative technique, avoiding practical issues related complexity navigation robotic system, such costs higher number personnel required. There are several limitations implement kinematically TKA implant for mechanical alignment. Therefore, important design an optimal shape restoring kinematics that might improve patient-reported satisfaction function.