Which of the following, if present, may cause an increase in the normal Q-angle?
a. Genu valgum
b. A narrow pelvis
c. Medially rotated pelvis
d. Femoral retroversion
ANS: A
The Q-angle is the angle formed between a line connecting the anterior superior iliac spine (ASIS) to the midpoint of the patella and a line connecting the tibial tubercle and the midpoint of the patella. A position of genu valgum will create an increase in the angle by moving the patella to a more medial position.
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