Impact of Femoral Neck Cortical Bone Defect Induced by Core Decompression on Postoperative Stability: A Finite Element Analysis

Figure 1

Clinical findings. (a) Conventional anteroposterior (a1) and lateral hip radiographs (a2) showing the neck shaft angle and anteversion angle. (b) Positioning of anteroposterior (b1) and frog position radiograph (b2) during core decompression. (c) Radiographs of injuring the cortical bone during surgery. (c1) Anteroposterior radiograph shows the good position of core decompression. (c2) Frog position radiograph shows the positioning to be slightly forward and does not exceed the bony margin of the femoral neck, while the cortical bone has been injured (red oval). (c3) Bone structure showing damaged femoral neck cortical bone (yellow arrow).

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