Abstract
Background: Quadriceps angle or Q angle is an index of the vector for the combined pull of extensor mechanisms and patellar tendon. It is a clinical measurement for knee and patella alignment. It is not a static but rather a dynamic consequence to the muscle mechanics, leg loading, and foot and leg position. Therefore in present study we assessed whether change of body position i.e. standing and supine position affects the Q angle measurement. Aims and Objectives: Present study aimed at finding whether there are any variations in Q angle in standing and supine position. Objectives of the study were to measure Q angle in supine position and standing position. We intended to assess the variations in the Q angle with change of body position. Methods: In this cross sectional analytical study, we assessed female participants between age group of 18-25 years, in supine and standing position, Q angle was measured in both the positions. Sample size was 100. Results: The results showed statistically significant increase in Q angle in standing position as compared with the supine position (p <0.0001) (C.I. 1.720 to 3.140). Conclusion: There was statistically significant increase in the Q angle measurement in standing as compared with the measurements in supine. Measuring the Q angle is concerned with assessing the knee functions during daily activities and sports participation, therefore assessing this important measurement not only in supine but also in a weight-bearing functional position in clinical setups would be helpful.
Highlights
The quadriceps angle or Q angle is the angle formed by the intersection of lines, one joining the anterior superior iliac spine (ASIS) and going to the center of the patella, and another from the tibial tuberosity to the center of patella
It is not a static but rather a dynamic consequence to the muscle mechanics, leg loading and foot and leg position which differs in both the positions [3]
The primary finding of the study was that the Q angle differs with different positions of the body showing an increase in Q angle in standing position
Summary
The quadriceps angle or Q angle is the angle formed by the intersection of lines, one joining the anterior superior iliac spine (ASIS) and going to the center of the patella, and another from the tibial tuberosity to the center of patella. Q angle is an index of the vector for the combined pull of extensor mechanisms and patellar tendon [2]. It is a clinical measurement for knee and patella alignment. It is not a static but rather a dynamic consequence to the muscle mechanics, leg loading and foot and leg position which differs in both the positions [3]. Quadriceps angle or Q angle is an index of the vector for the combined pull of extensor mechanisms and patellar tendon In present study we assessed whether change of body position i.e. standing and supine position affects the Q angle measurement.
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