Fig. 1
(A) Simple radiograph of left femur anteroposterior (AP) and lateral showed the reduction state of intertrochanter femoral fracture with proximal femoral nail anti-rotation (PFNA) with drain insertion state and anterior and superior migration of lesser trochanter with sharp inferior margin. (B) Postoperative simple radiograph of the left femur AP and lateral showed a reduction of an intertrochanteric femoral fracture with the PFNA. (C) Follow-up postoperative radiograph until discharge showed gradual migration of the lesser trochanter superior and anterior compared to the right after surgery.

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Fig. 2
(A) Computed tomographic angiography showed a massive hematoma near the branch of lateral circumflex femoral artery irritated by the sharp inferior margin of the lesser trochanter that was displaced superior and anterior (arrowheads). (B) Percutaneous transcatheter angiogram showed cutting of the ascending branch of the lateral circumflex femoral artery because of the sharp inferior margin of the displaced lesser trochanter (arrowhead). (C) After superselection of the bleeding artery using a microcatheter and guidewire, embolization of the bleeding artery was done using micro-coil (3.2 mm, 1×; 4.2 mm, 1×) (arrowhead). No extravasation of the left deep femoral artery was observed in the post-embolization angiogram. (D) Surgical evacuation of the hematoma near the vastus lateralis and intermedius was done under spinal anesthesia.

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