Figure 1

Left lower extremity Xrays. Although the patellar dislocation is not apparent with the left knee in extension (Fig. 1-A), it is severely shifted laterally at 90° and 120° of flexion (Fig. 1-B, C),
Left lower extremity Xrays. Although the patellar dislocation is not apparent with the left knee in extension (Fig. 1-A), it is severely shifted laterally at 90° and 120° of flexion (Fig. 1-B, C),