Fig. 1From: Hip effusion/synovitis influences results after multiple drilling core decompression for bone marrow edema syndrome of hipA Preoperative MRI T2-weighted coronal image of right hip demonstrated a bone marrow edema of femoral head and neck. B MRI T2-weighted coronal image of right hip showed an effusion pattern of the hip cavity (white arrow). C Postoperative 3D imaging showed the tracks of multiple drilling decompression at lateral side of proximal femur (black arrow). D Postoperative MRI T2-weighted coronal image of right hip demonstrated disappearance of bone marrow edema of femoral head and neckBack to article page