image based Q.10- recurrent knee problem

Q. which of these is not a risk factor for recurrent condition shown in the radiograph below ?

1. Decreased Q angle
2. female sex
3. genu valgum
4. family history






Answer - 1

This is a skyline radiograph  of knee showing patella subluxation.

 Increased Q angle is associated with recurrent patella subluxation/dislocation
Other common factors  are -

family history
trochlear dysplasia , causing shallow trochlea
patella alta or high riding ptella
female sex
defromity of femur or tibia