A) Stable intertrochanteric fracture characterized by an intact posteromedial cortex. B) An unstable intertrochanteric fracture characterized by disruption of the posteromedial cortex (note the displaced lesser trochanter).
Reproduced with permission from: Koval KJ, Zuckerman JD. Intertrochanteric fractures. In: Rockwood and Green's Fractures in Adults, 5th ed, Bucholz RW, Heckman JD (Eds), Lippincott Williams & Wilkins, Philadelphia 2002. Copyright © 2002 Lippincott Williams & Wilkins.
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