case_images: PMC6588135_01
case_images: Pre-operative X-rays.(a): Left hip AP. Note that left hip shows osteoporotic changes. (b): Left hip lateral X-ray.
case_images: JOCR-9-41-g001.jpg
case_images: PMC6588135_01_JOCR-9-41-g001.jpg
case_images: F1
case_images: The anterior-posterior and lateral X-ray of the hips were taken(Fig. 1).
case_images: (a-c)Pre-operative left hip non-contrast magnetic resonance imaging shows the high intensity of the femoral head in the T2-weighted image.
case_images: JOCR-9-41-g002.jpg
case_images: PMC6588135_01_JOCR-9-41-g002.jpg
case_images: F2
case_images: MRI shows increased intensity on T2-weighted images (Fig. 2).
case_images: (a and b)Intraoperative core decompression procedure under fluoroscopy.
case_images: JOCR-9-41-g003.jpg
case_images: PMC6588135_01_JOCR-9-41-g003.jpg
case_images: F3
case_images: An 8 mm drill was used for decompression targeting femoral head (Fig. 3).
case_images: Hemorrhagic necrosis between bone trabeculae.
case_images: JOCR-9-41-g004.jpg
case_images: PMC6588135_01_JOCR-9-41-g004.jpg
case_images: F4
case_images: The results of the per-operative samples came out as "marrow parenchyma including fields of necrosis" and "hemorrhagic necrosis between bone trabeculae" (Fig. 4).
case_images: Post-operative hip X-ray at postoperative 2 years.
case_images: JOCR-9-41-g005.jpg
case_images: PMC6588135_01_JOCR-9-41-g005.jpg
case_images: F5
case_images: X-ray has no specific changes (Fig. 5), and MRI shows a decreasing of the intensity of edema (Fig. 6).