left Zygomatico-maxillary (ZMC) fracture; 3D CT
3dct01
Three of the four conventional radiographic sites, of the ZMC
fracture present on this 3D frontal projection:

1) anterolateral wall ("friendly line"), antrum
2) inferior orbital rim (and floor)
3) lateral orbital rim (and wall)
a) fracture of anterior antral wall typically not visable radiographically.