TCIII PROSTHESIS FOR REVISION TOTAL KNEE ARTHROPLASTY: CLINICAL AND RADIOLOGICAL ASSESSMENT AND SURVIVORSHIP ANALYSIS WITH A MINIMUM 5- YEAR FOLLOW-UP.

Abstract

Aim: To undertake clinical and radiological assessment of the TCIII prosthesis for Revision total knee arthroplasty with survivorship analysis.

Methods: We reviewed the clinical and radiological outcome of 57 Total Condylar III (TCIII) prostheses used for revision knee arthroplasty performed between December1995 and December1997 at Wrightington hospital. Twelve patients (12 knees) had died. At a mean follow-up of 6.75 years (range, 5–8years) 45 knees in 43 patients were available for review. None were lost to follow-up. There were 23 women and 20 men, with a mean age of 73 years. Radiographs were analysed for component position, alignment and bone-cement radio-lucencies.

Results: The reason for revision was instability in 38 knees, infection in 4 knees, pain in 2 knees and stiffness in one knee. The mean preoperative Hospital for Special Surgery HSS score was 36, improving to 70 after revision at latest review(p=< 0.001). The mean postoperative range of movement was 95 degrees. 2 prostheses were revised, one for infection and another for instability, Survival analysis using the Kaplan Meier method provided a cumulative survival rate of 95.56 % at 8 years.

Conclusion: The clinical and radiological results of our study support the continued use of the TCIII prostheses in revision total knee arthroplasty with satisfactory outcome in the medium term.