It is a thin lamina separating the orbit anteriorly from the frontal sinus and posteriorly from the anterior cranial fossa.
Orbital roof fracture radiology.
A orbital fractures can occur in isolation or with other fracture patterns.
This is typically caused by a direct blow to the central orbit from a fist or ball.
Ct scan revealed widening of the frontal bone fracture and the left orbital roof fracture with a hypodense cystic swelling in the left orbit and upper eyelid and left frontal lobe contusion.
A three dimensional ct reconstruction demonstrated the extent and shape of the skull fracture fig.
Isolated orbital roof fractures in adults are uncommon comprising 12 19 of all orbital wall fractures.
Radiological considerations in the setting of orbital roof fracture it is important to fully assess the extent of the fracture including any radiographically apparent concomitant abnormalities.
Radiological considerations in the setting of orbital roof fracture it is important to fully assess the extent of the fracture including any radiographically apparent concomitant abnormalities.
Orbital fracture pearls are as follows.
The orbital roof is composed of the orbital plate of the frontal bone with a small contribution from the lesser wing of the sphenoid at the apex figures 3 4 and 3 5.
Fracture of the left zygomaticomaxillary attachmnet with fracture of the anterior and lateral maxillary walls inferior orbital rim fracture and left maxillary hemosinus.
This assessment is even more difficult when the orbital injury is associated with injuries involving multiple organs.
Fractures of the orbital roof are usually seen in combination with extension of linear frontal bone fractures or with complex cranial facial fractures including le fort iii naso orbito ethmoidal noe skull base fractures extending into the anterior skull base.
Orbital roof fracture icd 801 01 etiology.
Displaced orbital roof fracture 3.
Most roof fractures are associated with other orbital fractures and result from significant head trauma as a high degree of force is required to fracture this portion of the orbit.
Common posttraumatic orbital injuries include anterior chamber injuries injuries to the lens open globe injuries ocular detachments intraorbital foreign bodies carotid cavernous fistula and optic nerve injuries.
Angulated displaced fractures fragments are seen projecting downwards within the orbit indenting the superior rectus muscle.
Although common in the pediatric population isolated orbital roof fractures can also occasionally occur in an adult fig 13.
Very rarely the orbital roof will fracture without displacement of fractures fragments resulting in the non displaced orbital roof fracture.
Dr robert foley and assoc prof frank gaillard et al.
Orbital blowout fractures occur when there is a fracture of one of the walls of orbit but the orbital rim remains intact.
The injury can be associated with a violation of the dura necessitating an intracranial approach.
