case_images: PMC8087468_01
case_images: Images of administration on the 5th day of hospitalization. X-ray (a, b) sagittal T2 short tau inversion recovery (T2-STIR) MRI (c), axial L4/5 T2-weighted MRI (d).
case_images: CRIOR2021-5544126.001.jpg
case_images: PMC8087468_01_CRIOR2021-5544126.001.jpg
case_images: fig1
case_images: MRI showed a slight amount of fluid had collected at the left L4/5 facet joint; these findings are considered to be associated with degenerative changes (Figure 1).
case_images: MRI images on the 5th day of hospitalization. Sagittal view (a and b) and axial view at L4/5 (c) of T2-STIR MRI showing an abscess from the facet joint to the paravertebral muscle (a, c) and epidural abscess (arrows).
case_images: CRIOR2021-5544126.002.jpg
case_images: PMC8087468_01_CRIOR2021-5544126.002.jpg
case_images: fig2
case_images: The repeated MRI revealed continuous fluid from the facet joint to paravertebral muscles and epidural space (Figure 2).
case_images: X-ray during left L4/5 facet puncture.
case_images: CRIOR2021-5544126.003.jpg
case_images: PMC8087468_01_CRIOR2021-5544126.003.jpg
case_images: fig3
case_images: We performed a diagnostic facet joint puncture on the left L4/5 (Figure 3) on the 8th day; the culture tests detected MSSA and were negative for calcium pyrophosphate and uric acid crystals.
case_images: MRI image at two weeks after surgery. Sagittal view of T2-STIR MRI showing bone edema of the left L5 pedicle and L4 and 5 vertebral bodies around the pedicle (arrows).
case_images: CRIOR2021-5544126.004.jpg
case_images: PMC8087468_01_CRIOR2021-5544126.004.jpg
case_images: fig4
case_images: Two weeks after surgery, we took a follow-up MRI, which showed signal changes at the left L5 pedicle and L4 and 5 vertebral bodies around the pedicle, which suggested osteomyelitis (Figure 4).