The impact of gender on primary total knee replacement in Dohuk city

Background and Objectives: Osteoarthritis is the leading cause of disability and reduced quality of life among elderly patients, after a trial of conservative treatment, total joint arthroplasty is the gold standard treatment for symptomatic end-stage osteoarthritis. The aim is to assess the range of knee flexion, Oxford knee score, Knee Society Function and Knee Society Score after total knee replacement in both genders and find the differences. Methods: This cross-sectional study was conducted in Duhok Emergency Teaching Hospital from October/2022 to October/2024. A total of 60 patients who underwent primary total knee replacement for end-stage knee osteoarthritis were involved in the study. We used non-probability (nonrandom) convenience sampling. Patients in both groups were evaluated preoperatively, as well as at 6, 12, and 24 months postoperatively. Knee flexion, oxford knee score, knee society score, and knee society function score were recorded preoperatively and postoperatively. Results: The outcomes of primary total knee replacement showed significant differences between males and females at 6, 12, and 24 months postoperatively. Significant differences were observed in Knee Function and Knee Society Score, with p-values of 0.0012 and <0.0001, respectively, favoring females. However, no significant differences were found in Knee Flexion and Oxford Knee Score, with p-values of 0.2772 and 0.3340, respectively. Conclusion: Compared to the male group, females showed better outcomes in Knee Society Score and Knee Society Function Score. However, no significant differences were observed in Knee Flexion and Oxford Knee Score. Age and BMI had minimal impact on postoperative outcomes following total knee replacement.