Lateral hip ("frog-leg" view)  

The patient rests in a supine position and externally rotates, flexes, and abducts the femur (the "frog-leg" position, see figure below). As with the AP image, the x-ray beam is directed anterior to posterior across the joint.

This view can be used to evaluate many of the same structures and relations discussed in the AP view. Note in particular that the lesser trochanter is clearly visible (external rotation moves it to a more anterior position) and the greater trochanter is harder to discern (it has been rotated posteriorly). Realize that the angle of the femoral neck cannot be evaluated in this view.

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