orbital rim


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orbital margin

[TA]
the mostly sharp edge of the orbital opening that is the peripheral border of the base of the pyramidal orbit. The superior half of the orbital rim is the supraorbital margin; the inferior half is the infraorbital margin. The frontal, maxillary, and zygomatic bones contribute to the orbital rim, which is generally strong so as to protect the orbital contents. Weak potential fracture sites of the rim coincide with the sutures between the participating bones.

orbital rim

The anterior edge of the bony orbit, or eye socket, formed by the maxilla and zygomatic bone inferiorly and the frontal bone superiorly.
See also: rim
References in periodicals archive ?
This projection also is referred to the occipitomental view and is considered the best overall view for the orbits, orbital rim structures, orbital floor, maxillary and frontal sinuses, zygomatic arches, nasal arches and septum.
Knize had defined the orbital ligament lied between the superolateral orbital rim and the superficial temporal fascia.
In a numeric model (dynamic variant) after a strike in the inferior orbital rim it comes to rise of mechanical stress and occurrence of dislocations which create a "shock wave" (Figures 1-4).
With all approaches, dissection is carried down to the periosteum of the orbital rim, which was incised and reflected.
Each orbit is approximately pyramidal in shape, with its widest point some 15mm behind the orbital rim, and its four wails converging to an apex.
It's larger and smaller parts along the orbital rim were fused with each other in blackbuck as reported in horse (Getty) and in ox (Raghavan) except for the lacrimal fissure present in blackbuck.
* Botulinum toxin placed in small aliquots around the orbital rim will reduce the dynamic rhytids in this area.
We present a case of previously unreported orbital compartment syndrome secondary to iatrogenic fracture of the superomedial orbital rim as a complication of frontal trephine irrigation.
b) Orbital width (Wo): The horizontal distance between the rostral and caudal margins of the orbital rim.
* The buckling theory implicates direct trauma to the inferior orbital rim, which causes the floor to buckle.
In patients with single processes fracture, the zygomatic buttress was most commonly involved accounting 23.5% followed by infra orbital rim 3% and frontozygomatic suture 1.2%.