PMC7737432_01
X-ray 1. Lateral view of the right knee. Green arrows shows the Sinding-Larsen and Johansson disease, initial radiological findings.
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Figures 1-3 (green arrows) show SLJD typical X-rays with calcifications plus irregular ossification of the lower pole of the patella and thickening and heterogeneity of the proximal patellar tendon.
X-ray 2. AP view of the right knee, initial radiological findings.
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Figures 1-3 (green arrows) show SLJD typical X-rays with calcifications plus irregular ossification of the lower pole of the patella and thickening and heterogeneity of the proximal patellar tendon.
X-ray 3. Axial view of both knees (right knee on the left), initial radiological findings.
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Figures 1-3 (green arrows) show SLJD typical X-rays with calcifications plus irregular ossification of the lower pole of the patella and thickening and heterogeneity of the proximal patellar tendon.
MRI 1. Sagittal T2 fat sat view. Osteomyelitis of the patella (blue arrow) and fat pad infiltration were observed (red arrows).
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Because of the increased CRP, an infectious process and a magnetic resonance imaging (MRI) were performed, and the suspected diagnosis of OMP was established (Figures 4-6, blue arrows). An abscess of Hoffa's fat pad with circular fat pad infiltration was observed (Figures 4-6, red arrows).
MRI 2. Coronal T2 fat sat view. Osteomyelitis of the patella (blue arrows).
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fig5
Because of the increased CRP, an infectious process and a magnetic resonance imaging (MRI) were performed, and the suspected diagnosis of OMP was established (Figures 4-6, blue arrows). An abscess of Hoffa's fat pad with circular fat pad infiltration was observed (Figures 4-6, red arrows).
MRI 3. Sagittal T1 fat sat view. Osteomyelitis of the patella (blue arrows) and fat pad infiltration were observed (red arrows).
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fig6
Because of the increased CRP, an infectious process and a magnetic resonance imaging (MRI) were performed, and the suspected diagnosis of OMP was established (Figures 4-6, blue arrows). An abscess of Hoffa's fat pad with circular fat pad infiltration was observed (Figures 4-6, red arrows).
KOOS-child knee survey at 6 weeks postoperative.
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Knee Osteoarthritis Outcome Score (KOOS) (see Figure 7) and the Lower Extremity Functional Scale (LEFS) at 79/80 points were excellent.
X-ray 4. Lateral view of the right knee, 6 weeks after diagnosis. Orange arrows show the lysis area at the lower pole of the patella.
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The radiograph of the knee showed a bone lysis area at the lower pole of the patella (Figures 8 and 9, orange arrows show the lysis area).
X-ray 5. AP view of the right knee, 6 weeks after diagnosis.
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The radiograph of the knee showed a bone lysis area at the lower pole of the patella (Figures 8 and 9, orange arrows show the lysis area).