The Results of Total Knee Arthroplasty with AGC(R) System(More than 5-Year Follow-up)

ABSTRACT

PURPOSE: To evaluate the mid-term (over 5 years) clinical and radiologic results of AGC(R)(Anatomical Graduated Components, Biomet, USA) total knee arthroplasty(TKA) retrospectively. MATERIALS AND METHODS: Out of 121 cases who underwent TKA with AGC(R) knee system, 90 cases could be analysed clinically and radiographically. Clinical analysis was performed according to flexion contracture, ROM, Knee Society Clinical Rating System (KSCRS) and Hospital for Special Surgery (HSS) score system. Radiographic analysis was performed according to the roentgenographic evaluation criteria of American Knee Society. Complications and survial rate were evaluated. RESULTS: Average flexion contracure was improved from 10.4degrees preoperatively to 0.6degrees at final follow-up and average ROM was improved from 107.5 degrees preoperatively to 120.9 degrees at final follow-up (p<0.05). Average HSS score was improved from 52.2 preoperatively to 81.5 at final follow-up and average KSCRS score was also improved from 77.2 to 152.5. Average tibio-femoral angle was changed from 6.3 degrees varus preoperatively to 4.3 degrees valgus at final follow-up. There were 6 complications, including infection in three cases, patellar dislocation, supracondylar fracture and aseptic loosening in one case respectively. Survival rate was 96.7 percent. CONCLUSION: AGC(R) TKA showed excellent results and good survival rate at more than five years follow-up. However, more long-term follow-up should be necessary.