PMC7102450_01
Left knee AP and lateral radiographs showing avulsion fracture of the tibial tuberosity.
CRIOR2020-8650927.001.jpg
PMC7102450_01_CRIOR2020-8650927.001.jpg
fig1
Radiographs of the left knee showed an avulsion fracture of the tibial tuberosity (Figure 1).
Intraoperative lateral radiograph showing fixation with spiked washer and partially threaded cancellous screws.
CRIOR2020-8650927.002.jpg
PMC7102450_01_CRIOR2020-8650927.002.jpg
fig2
Extensor retinaculum tears on either side were repaired (Figure 2).
Lateral radiographs of the knee after the second injury with migration of the washer and failure of fixation.
CRIOR2020-8650927.003.jpg
PMC7102450_01_CRIOR2020-8650927.003.jpg
fig3
Repeat radiographs of the knee showed migration of the screw and spiked washer (Figure 3).