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- Blowout_fracture abstract "A blowout fracture is a fracture of the walls or floor of the orbit. Intraorbital material may be pushed out into one of the paranasal sinuses. This is most commonly caused by blunt trauma of the head, generally personal altercations. Orbital floor fractures were investigated and described by MacKenzie in Paris in 1844 and the term blow out fracture was coined in 1957 by Smith & Regan, who were investigating injuries to the orbit and resultant inferior rectus entrapment, by placing a hurling ball on cadaverous orbits and striking it with a mallet. The force of a blow to the orbit is dissipated by a fracture of the surrounding bone, usually the orbital floor and/or the medial orbital wall. Serious consequences of such injury include diplopia in upgaze where there is significant damage to the orbital floor. In blowout fractures, the medial wall is fractured indirectly. When an external force is applied to the orbital cavity from an object whose diameter is larger than that of the orbit, the orbital contents are retropulsed and compressed. The consequent sudden rise in intraorbital pressure is transmitted to the walls of the orbit, which ultimately leads to fractures of the thin medial wall and/or orbital floor. Theoretically, this mechanism should lead to more fractures of the medial wall than the floor, since the medial wall is slightly thinner (0.25 mm vs 0.50 mm). However, it is known that pure blowout fractures most frequently involve the orbital floor. This may be attributed to the honeycomb structure of the numerous bony septa of the ethmoid sinuses, which support the lamina papyracea, thus allowing it to withstand the sudden rise in intraorbital hydraulic pressure better than the orbital floor.".
- Blowout_fracture icd10 "S02.3".
- Blowout_fracture thumbnail Pblowoutfracture.png?width=300.
- Blowout_fracture wikiPageExternalLink ophthalmology-befuddler-014.
- Blowout_fracture wikiPageExternalLink raw_image.html?mode=case_viewer&pt_id=13301&imid=51519&quiz=no.
- Blowout_fracture wikiPageExternalLink 30183387?access_key=key-1t9uv2g5o3kk2tw9ddwp.
- Blowout_fracture wikiPageID "7583691".
- Blowout_fracture wikiPageRevisionID "602868522".
- Blowout_fracture caption "A inferior orbital fracture on the persons left".
- Blowout_fracture hasPhotoCollection Blowout_fracture.
- Blowout_fracture icd "S02.3".
- Blowout_fracture name "Blowout fracture".
- Blowout_fracture subject Category:Bone_fractures.
- Blowout_fracture type Abstraction100002137.
- Blowout_fracture type Attribute100024264.
- Blowout_fracture type BoneFractures.
- Blowout_fracture type Condition113920835.
- Blowout_fracture type Disease114070360.
- Blowout_fracture type Fracture114292090.
- Blowout_fracture type IllHealth114052046.
- Blowout_fracture type Illness114061805.
- Blowout_fracture type Injury114285662.
- Blowout_fracture type PathologicalState114051917.
- Blowout_fracture type PhysicalCondition114034177.
- Blowout_fracture type State100024720.
- Blowout_fracture type Disease.
- Blowout_fracture type AilmentCondition.
- Blowout_fracture type Situation.
- Blowout_fracture comment "A blowout fracture is a fracture of the walls or floor of the orbit. Intraorbital material may be pushed out into one of the paranasal sinuses. This is most commonly caused by blunt trauma of the head, generally personal altercations.".
- Blowout_fracture label "Blowout fracture".
- Blowout_fracture label "Orbitabodenfraktur".
- Blowout_fracture sameAs Orbitabodenfraktur.
- Blowout_fracture sameAs m.0265z2q.
- Blowout_fracture sameAs Q2028528.
- Blowout_fracture sameAs Q2028528.
- Blowout_fracture sameAs Blowout_fracture.
- Blowout_fracture wasDerivedFrom Blowout_fracture?oldid=602868522.
- Blowout_fracture depiction Pblowoutfracture.png.
- Blowout_fracture isPrimaryTopicOf Blowout_fracture.
- Blowout_fracture name "Blowout fracture".