case_images: PMC6332997_01
case_images: X-ray showing the fabella in a normal posterior location on the lateral X-ray.
case_images: CRIOR2018-2371947.001.jpg
case_images: PMC6332997_01_CRIOR2018-2371947.001.jpg
case_images: fig1
case_images: He was referred to orthopedics where X-rays of the knee were normal (Figures 1 and 2). The dynamic ultrasound showed a moderate-sized fabella in the posterior knee adjacent to the peroneal nerve, with a dynamic compression of the nerve on knee flexion and nerve enlargement distally (see Figure 3 and ultrasound videos 1 and 2).
case_images: Fabella located lateral out from behind the lateral femur on the AP X-ray.
case_images: CRIOR2018-2371947.002.jpg
case_images: PMC6332997_01_CRIOR2018-2371947.002.jpg
case_images: fig2
case_images: He was referred to orthopedics where X-rays of the knee were normal (Figures 1 and 2). The dynamic ultrasound showed a moderate-sized fabella in the posterior knee adjacent to the peroneal nerve, with a dynamic compression of the nerve on knee flexion and nerve enlargement distally (see Figure 3 and ultrasound videos 1 and 2).
case_images: Axial ultrasound of the posterior lateral knee (blue: femoral condyle, red: fabella causing acoustic shadowing, and gold: peroneal nerve).
case_images: CRIOR2018-2371947.003.jpg
case_images: PMC6332997_01_CRIOR2018-2371947.003.jpg
case_images: fig3
case_images: The dynamic ultrasound showed a moderate-sized fabella in the posterior knee adjacent to the peroneal nerve, with a dynamic compression of the nerve on knee flexion and nerve enlargement distally (see Figure 3 and ultrasound videos 1 and 2).
case_images: Preoperative marking of the fabella with the patient.
case_images: CRIOR2018-2371947.004.jpg
case_images: PMC6332997_01_CRIOR2018-2371947.004.jpg
case_images: fig4
case_images: Preoperatively, we were able to palpate and mark the fabella with the patient (Figure 4).
case_images: Exposure of the fabella.
case_images: CRIOR2018-2371947.005.jpg
case_images: PMC6332997_01_CRIOR2018-2371947.005.jpg
case_images: fig5
case_images: The lateral gastrocnemius tendon was incised longitudinally directly over the fabella (Figure 5).
case_images: Fabella was removed as a single unit and measured 13 mm x 10 mm.
case_images: CRIOR2018-2371947.006.jpg
case_images: PMC6332997_01_CRIOR2018-2371947.006.jpg
case_images: fig6
case_images: The fabella itself was then removed as a single unit and measured 13 mm in length by 10 mm in width (Figure 6).