Impact of the mixed and simple methods on bone fusion at average follow-up at the idrissa pouye general Hospital (HOGIP) in Dakar

Introduction: Knee arthrodesis is a surgical procedure that consists of blocking an injured and painful knee to achieve bone fusion to correct a deformity or relieve pain. The aim of our study was to evaluate the impact of the mixed and simple method on bone fusion during the average follow-up. Materiels and Methods: This is a retrospective study that was carried out on 20 patients who underwent knee arthrodesis at HOGIP between January 2010 and December 2022, a period of twelve years. 20 patients were evaluated, including twelve (12) men and eight (8) women. There were ten (10) cases of ankylosis due to sequelae of osteoarthritis of the knee, three (03) cases of infection on PTG, four (04) cases of post-traumatic gonarthrosis, two (02) cases of post-infectious gonarthrosis and one (01) case of post-infectious stiffness. The mean age of the study was 47.25 years, standard deviation ±18.06, (range: 18-67 years). Results: 20 patients underwent knee arthrodesis, of which eight (08) had undergone simple arthrodesis (40%) and twelve (12) had undergone mixed arthrodesis (60%). All 20 patients who underwent simple or mixed knee arthrodesis were all fused. The mean time to bone fusion was 3.8 months with extremes of 3 to 6 months. Conclusion: Arthrodesis is often used as a salvage procedure for total replacements of infected and interconstructible knees. Our study allowed us to evaluate the impact of the mixed and simple methods on bone fusion at the mean follow-up.