Our Medium-Term Functional and Radiological Outcomes in Revision Total Knee Arthroplasty

INTRODUCTION: To investigate the medium-term outcomes of the patients who underwent revision total knee arthroplasty, and to come to a conclusion regarding the efficacy of the method by comparing these with literature data.
METHODS: 34 knees of 33 patients who underwent revision knee arthroplasty operation between January 2008 and January 2012 and were sufficiently followed-up were included into this study. Single-stage revision knee arthroplasty was performed for 25 knees for aseptic reasons, and two-stage revision knee arthroplasty was performed for 9 knees for septic reasons.
RESULTS: The patients’ mean knee score and functional score was detected to be 34.7 (4-57) and 33.5 (5-55), respectively, and to be 78.2 (62-90) and 73.8 (50-90) after revision. In pre-operative assessments performed based on Knee Society radiographic assessment form, mean alpha angle was found to be 95.3 (77-103), mean beta angle to be 84.8 (71-100), mean gamma angle to be 5.8 (0 - 30), mean sigma angle to be 83.3 (49-97), and mean total valgus angle to be 0.1 (-13 - 12). In post-operative assessments, mean alpha angle was found to be 94.7 (90-99), mean beta angle to be 88.4 (84-92), mean gamma angle to be 3.7 (0 - 10), mean sigma angle to be 88.1 (85-92), and mean total valgus angle to be 3.1 (-1 - 8).
DISCUSSION AND CONCLUSION: When revision knee arthroplasty operation is performed for proper indication and according to the surgical technique, it is a highly effective and preferable method in decreasing the pain severity and improving the life quality of the patients.