Medical Definition of Orbital rim

1. The mostly sharp edge of the orbital opening which is the peripheral border of the base of the pyramid-shaped 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 to protect the orbital contents. Weak, potential fracture sites of the rim coincide with the sutures between the participating bones. Synonym: margin of orbit. (05 Mar 2000)

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Lexicographical Neighbors of Orbital Rim

orbital nerve
orbital opening
orbital ophthalmoplegia
orbital part of frontal bone
orbital part of lacrimal gland
orbital part of optic nerve
orbital part of orbicularis oculi muscle
orbital plane
orbital plate
orbital plate of ethmoid bone
orbital point
orbital process
orbital pseudotumour
orbital region
orbital ridge
orbital rim (current term)
orbital riveting
orbital rotation
orbital septum
orbital sulci
orbital surface
orbital symmetry
orbital syndrome
orbital tubercle of zygomatic bone
orbitalis muscle

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