MRCP UK EXAMINATIONS

Detailed explanation-1: -Fractures of the orbital floor and the medial orbital wall (blowout fractures) are common midface injuries. Orbital fractures have a distinct trauma mechanism and are complex due to the complex anatomy of the bony and soft tissue structures involved.

Detailed explanation-2: -Medial wall The area damaged most easily by trauma is the very thin lamina papyracea (0.2–0.4 mm thick), which separates the orbit from the ethmoidal sinuses. The lacrimal sac lies anteriorly along the medial wall in the lacrimal groove formed by the maxilla and lacrimal bone.

Detailed explanation-3: -Fractures of the orbital floor are common: it is estimated that about 10% of all facial fractures are isolated orbital wall fractures (the majority of these being the orbital floor), and that 30-40% of all facial fractures involve the orbit. The anatomy of the orbital floor predisposes it to fracture.