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date: 24 November 2020

Q-angle (quadriceps angle) 

Source:
Food and Fitness: A Dictionary of Diet and Exercise
Author(s):

Michael Kent

An important indicator of biomechanical function, the Q-angle is the angle formed between the longitudinal axis of the femur, representing the line of pull of the quadriceps muscle, and a line that represents the pull of the patellar tendon. The patellar tendon is a band of strong connective tissue attaching the shin bone to the knee cap. When the quads are relaxed, the Q-angle is normally less than 15 degrees in men and less than 20 degrees in women. An abnormally large Q-angle usually results in a disorder called abnormal quadriceps pull. When the quadriceps muscle contracts, it pulls the kneecap sideways resulting in an overpronation and internal rotation which can lead to knee problems.... ...

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