Results of Posterior Cruciate Retaining and Cruciate Substituting Total Knee Arthroplasty (3 to 8 years follow up)

ABSTRACT

PURPOSE: To compare the clinical, roentgenographic results and patient self assessment between posterior cruciate retaining TKA and posterior cruciate substituting TKA. MATERIALS AND METHODS: From January 1993 to May 1999, 68 patients (106 knees) were performed total knee arthroplasty using the PFC system. Seventy five PCL retaining and thirty one PCL substituting components were used. Retrospective analysis were done in two groups by the clinical and radiological evaluation system using American Knee Society Scale and patient self assessment using WOMAC score. RESULTS: There were no statistically significant differences in knee score and functional score, improvement of range of motion, and self assesment of the PCL retaining and substituting group. We also observed improvement of pain, knee scores, and functional scores according to flexion contracture in both groups but there were no significant differences statistically. Tibiofemoral angles were corrected in both groups. There was no case of complete radiolucency, osteolysis, and component loosening. CONCLUSION: Surgeons will achieve good result of operation, if they choose proper type of TKA systems according to state of posterior cruciate ligament, degree of deformity, and technique of surgery.