Normal values of quadriceps angle and its correlation with anthropometric measures in a group of Jordanians

Abstract EN

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.