Correlation Between Knee Joint Stability and Gluteus Maximus Endurance In Individuals with Patellofemoral Pain Syndrome

Abstract

Background:Patellofemoral Pain Syndrome (PFPS) is a common musculoskeletal disorder presenting as anterior knee pain, often attributed to biomechanical deficits such as DKVand muscular imbalances. Recent evidence highlights the importance of proximal muscle function, particularly gluteus maximus endurance, in supporting KJS. However, the direct relationship between gluteus maximus endurance and knee alignment inPFPS remains underexplored. Need of study:To study the correlation between gluteus maximus endurance and knee joint stability in individuals diagnosed with PFPS. Methods:fifty seven participants aged 18–25 years with clinically diagnosed PFPS were recruited. The stability of the knee joint wereassessed using measuring dynamic valgus during single-leg squats, while gluteus maximus endurance wereassessed using a prone hip extension endurance test.The correlation between endurance and dynamic valgus angle was investigated using Pearson correlation analysis. Results:The result of this presentstudy showes that the mean dynamic valgus angle among the individuals with PFPS (n = 57) was 10.91 ± 3.93°, with values ranging from 5.10° to 19.20°. Correlation analysis revealed a very weak positive relationship between dynamic valgus angle and gluteus maximus endurance (r = 0.059), and this relationship was not been statistically significant (p = 0.661 > 0.05), indicating that gluteus maximus endurance had no meaningful correlation with knee joint stability in this sample,The correlation was not statistically significant, and the 95% confidence interval ranged from −0.204 to 0.315, indicating considerable uncertainty around the estimated association.. Conclusion:According to this current study, there is no discernible correlation between gluteus maximus endurance and knee joint stability in those with PFPS.