INSTRUMENTATION SYSTEM FOR THREE DIFFERENT TECHNIQUES OF TKA

Aim: To compare between the number of steps and instruments required for total knee arthroplasty (TKA) using 3 different techniques. The proposed techniques were conventional technique, conventional technique with patient-specific pin locators and CAOS technique using patient-specific templates (PST). Patients and methods: Zimmer/Nexgen was used as the standard implant and templating system for TKA. A Comparison was done on the number of steps and instruments required for TKA when performed with conventional technique, conventional technique with patient-specific pin locators and CAOS technique with patient-specific templates (PST) used as cutting guides. Results: The essential steps and instruments required for conventional TKA without surgical approach or bone exposure were average 70 steps with 183 different instruments; for conventional technique with patient-specific pin locators, they were average 20 steps with 40 instruments and two templates; for CAOS technique using PST, they were average 10 step...