case_images: PMC3504234_01
case_images: Mass observed in the infrapatellar region.
case_images: CRIM.ORTHOPEDICS2012-547963.001.jpg
case_images: PMC3504234_01_CRIM.ORTHOPEDICS2012-547963.001.jpg
case_images: fig1
case_images: Upon admission the mass could be easily seen on the right knee right below the patella in the infrapatellar region (Figure 1).
case_images: Osseous structure in the infrapatellar fat pad.
case_images: CRIM.ORTHOPEDICS2012-547963.002.jpg
case_images: PMC3504234_01_CRIM.ORTHOPEDICS2012-547963.002.jpg
case_images: fig2
case_images: A standard X-ray examination revealed osseous structure in the infrapatellar site (Figure 2).
case_images: Computed tomography showing the mass with its osseous content in the infrapatellar region.
case_images: CRIM.ORTHOPEDICS2012-547963.003.jpg
case_images: PMC3504234_01_CRIM.ORTHOPEDICS2012-547963.003.jpg
case_images: fig3
case_images: According to the CT (Figure 3) and MRI (Figures 4(a) and 4(b)), a differential diagnosis between synovial osteochondromatosis, synovial sarcoma, and para-articular chondroma should be carried out.
case_images: (a) Axial T1-weighted image. (b) Axial T2-weighted image showing clearly the mass in Hoffa's fat pad underlying the patellar tendon and extra-articular.
case_images: CRIM.ORTHOPEDICS2012-547963.004.jpg
case_images: PMC3504234_01_CRIM.ORTHOPEDICS2012-547963.004.jpg
case_images: fig4
case_images: According to the CT (Figure 3) and MRI (Figures 4(a) and 4(b)), a differential diagnosis between synovial osteochondromatosis, synovial sarcoma, and para-articular chondroma should be carried out.
case_images: Intraoperative image showing the mass before its final excision.
case_images: CRIM.ORTHOPEDICS2012-547963.005.jpg
case_images: PMC3504234_01_CRIM.ORTHOPEDICS2012-547963.005.jpg
case_images: fig5
case_images: The patient was then operated and a mass of 6 cm approximately in diameter was excised under general anaesthesia along with its pedicle base (Figures 5 and 6).
case_images: A lipomatous mass of 6 cm in diameter.
case_images: CRIM.ORTHOPEDICS2012-547963.006.jpg
case_images: PMC3504234_01_CRIM.ORTHOPEDICS2012-547963.006.jpg
case_images: fig6
case_images: The patient was then operated and a mass of 6 cm approximately in diameter was excised under general anaesthesia along with its pedicle base (Figures 5 and 6).
case_images: Area of osseous metaplasia.
case_images: CRIM.ORTHOPEDICS2012-547963.007.jpg
case_images: PMC3504234_01_CRIM.ORTHOPEDICS2012-547963.007.jpg
case_images: fig7
case_images: The result of this histological examination suggested a fibrolipoma with osseous and cartilagenous metaplasia (Figures 7 and 8).
case_images: Area of cartilagenous metaplasia.
case_images: CRIM.ORTHOPEDICS2012-547963.008.jpg
case_images: PMC3504234_01_CRIM.ORTHOPEDICS2012-547963.008.jpg
case_images: fig8
case_images: The result of this histological examination suggested a fibrolipoma with osseous and cartilagenous metaplasia (Figures 7 and 8).