Roof Of The Orbit

Most orbital roof fractures are blow in fractures displacement of the bone is towards the orbit.

Roof of the orbit.

The orbital plate of the frontal bone forms the anterior aspect of the orbital roof. Dict cc übersetzungen für roof of the orbit im englisch deutsch wörterbuch mit echten sprachaufnahmen illustrationen beugungsformen. Roof superior wall formed by the frontal bone and the lesser wing of the sphenoid. This frequently causes downward and forward displacement of the globe.

The floor of the frontal sinus is the roof of the orbit comprised of the frontal bone and lesser wing of the sphenoid. Introduction orbit is the anatomical space bounded. Sagittal slices hard tissue window of an isolated right orbital roof fracture. Paries superior orbitae ta superior wall of orbit.

An orbital blowout fracture is a traumatic deformity of the orbital floor or medial wall typically resulting from impact of a blunt object larger than the orbital aperture or eye socket. The lesser wing of the sphenoid bone forms the posterior aspect of the orbital roof. Ta formed by the orbital plate of the frontal bone and the lesser wing of the sphenoid bone the optic canal opens at its posterior limit. Orbital emphysema is common when the frontal sinus is involved.

Superiorly anterior cranial fossa medially nasal cavity ethmoidal air sinuses inferiorly maxillary sinus laterally middle cranial fossa temporal fossa. The maxilla separates the orbit from the underlying maxillary sinus. The roof superior wall is formed primarily by the orbital plate frontal bone and also the lesser wing of sphenoid near the apex of the orbit. An indentation the fossa for the lacrimal gland is located in the anterolateral part of the roof.

The floor is likely to collapse because the bones of the roof and lateral walls are robust. Floor inferior wall formed by the maxilla palatine and zygomatic bones. Most commonly the inferior orbital wall i e. Although the bone forming the medial wall is thinnest it is buttressed by the bone separating the ethmoidal air cells.

Trauma to the frontal bar of the superior orbital rim can cause a buckling of this bone in addition to fractures of the contralateral orbit. There are many ways to remember these bones. The orbital roof is formed by two bones. The orbital surface presents medially by trochlear fovea and laterally by lacrimal fossa.

The frontal bone separates the orbit from the anterior cranial fossa. Coronal slices hard tissue window of the same isolated right orbital roof fracture.