Orbital Floor Fracture Inferior Rectus Entrapment

A blowout fracture of the orbital floor is defined as a fracture of the orbital floor in which the inferior orbital rim is intact.

Orbital floor fracture inferior rectus entrapment.

Orbital fractures are typically caused by blunt periocular trauma and are one of the most common types of facial fractures. Orbital fat prolapses into the maxillary sinus and may be joined by prolapse of the inferior rectus muscle. Inferior floor medial wall lamina papyracea superior roof lateral wall. Intervention within days for some orbital floor fractures.

Ophthal plast reconstr surg. 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. They can be repaired without an implant in some. For example a fracture might be described as a pure inferior blowout fracture with likely entrapment of the inferior rectus muscle resulting in severely limited up gaze.

Orbital floor fractures often result from blunt trauma to the orbit. 3 the intermuscular septum may also be entrapped resulting in restriction. Lateral to the orbital canal lies the superior orbital fissure housing cranial nerves iii iv v and vi. Blowout fractures can occur through one or more of the orbital walls.

Blowout fracture of the orbital floor with entrapment caused by isolated trauma to the orbital rim. Head and neck trauma exam with special attention to. Rhee js kilde j yoganadan n pintar f. The most common entrapment is that of the inferior rectus muscle in a fractured floor.

The most common muscle to be entrapped by the fracture is the inferior rectus muscle. Fractures of the orbital floor are common. Inferior blowout fractures are the most common. In children they tend to be of the trapdoor type which can cause inferior rectus entrapment presenting clinically with limitation of upgaze nausea bradycardia and positive forced ductions.