RESUMEN
Objectives: to establish the normal values of Quadriceps angle[Q angle] in Jordanians according to gender and bilaterality within-subject symmetry in both extremities, and to examine its association with anthropometric measures [body height, weight, body mass index, pelvic width, and waist to hip circumference ratio]
Methods: a double-centered study was conducted at Department of Anatomy of University of Jordan, and Orthopedic Department of Jordanian Royal Medical Services, Amman, Jordan, between September 2014 and December 2014. Q angle was measured using goniometer from 419 individuals [219 males and 200 females]. Pearson Correlation coefficient was used to assess the influence of with anthropometric measures on the values of the Q angle in both genders
Results: the mean values [SD] of the Q angle among males and females were 14.4 [1.9] and 18.4 [1.8], respectively. Those values were relatively higher than normal values recorded in the literature. No significant difference was found between sides in different groups. In both genders, the relationship of mean Q angle was significant when correlated with height and BMI; but with pelvic width, such a relationship was seen only for females. Weight and WHR showed no correlation with Q angle values, but in females showing lower body obesity pattern [BMI > 30 and WHR < 0.85], the WHR had a moderate negative correlation with Q angle measurements
Conclusion: this study reinforces the need to establish reference values of Q angle in a given population