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Critical Facial Fractures: A Ranked Surgical List

Fellowship-level neuroradiology teaching by E. Brooke Schrickel, MD. Open this topic in the interactive reading room →

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Core clinical idea

Report facial trauma as a ranked, complex-organized surgical list, not a laundry list: the maxillary buttress, hard palate, and mandible heal poorly and hurt because chewing hammers the fragments apart, and the mandible's surgical goal is occlusal — not anatomic — alignment.

Bottom line

Report midface and mandible trauma the way the surgeon fixes it — buttresses that bear chewing load, occlusal (not anatomic) alignment for the mandible, and displacement/rotation for the ZMC complex.

Core workstation questions

  • Which buttresses are disrupted, and am I reporting buttress involvement rather than just 'sinus wall fracture'?
  • Did I check the coronals for a sagittal hard palate fracture hiding on one or two axial slices?
  • For the mandible: does the bite still line up (occlusal alignment), and have I hunted for a second, usually contralateral, fracture?
  • Is this subtle posterior-ramus break actually a subcondylar fracture, confirmed on coronal/3D?
  • For a ZMC fracture, have I stated displacement and rotation with interzygomatic distance vs the normal side?
  • Is the posterior table breached or the mucosa disrupted — CSF/meningitis or mucocele risk to flag — and how displaced is the fragment?
  • Did I describe the zygomatic arch in detail, including a deformity fracture with no visible line, with interzygomatic distance?
  • For the orbit: rim vs wall? Herniation (not entrapment)? Defect size by my surgeons' method? Did I reach the apex?

What changes reporting / management

  • Report buttress involvement (anterior/posterior) explicitly — these heal poorly and cause pain on chewing.
  • Use coronal images for sagittally-oriented hard palate fractures; severe disruption risks oronasal fistula.
  • Report the mandible against occlusal alignment, not anatomic alignment; 3D/coronal with jaw closed or wired best assesses this.
  • For ZMC: report displacement and rotation of the malar fragment, with interzygomatic distance compared to the contralateral side.
  • Name mandible fractures by location/socket so the report is surgically legible (angle, subcondylar, body-through-X-socket, parasymphyseal).
  • Report frontal sinus anterior table, posterior table, and inter-sinus septum separately; emphasize fragment displacement (drives operate-vs-avoid).
  • Describe the zygomatic arch in detail (solitary vs segmental, interzygomatic distance); do not gloss over it.
  • Distinguish orbital rim from wall; report herniation of contents, never 'entrapment'.
  • Measure orbital floor defect size by the local surgeons' preferred method/threshold.
  • Always reach the orbital apex; flag optic canal hematoma and image for skull base fractures when the apex is involved.

Practical traps

  • Producing an unranked laundry list that buries the fractures the surgeon must fix.
  • Skimming past a one-or-two-slice axial hard palate fracture without checking coronals.
  • Calling a subcondylar fracture a 'ramus fracture'.
  • Stopping at one mandible fracture without searching for the second (often contralateral).
  • Reporting mandible repair targets as anatomic alignment instead of occlusal.
  • Undercalling the zygomatic arch as a minor fracture (it is arguably the most important midface fracture to the surgeon).
  • Dismissing a deformity (greenstick-type) arch fracture because no lucent fracture line is visible.
  • Writing 'entrapment' (a clinical diagnosis) instead of 'herniation'.
  • Overusing 'trapdoor' for any blowout — a true trapdoor has snapped closed.
  • Stopping at the sinus or orbit without reaching the orbital apex.

Teaching pearls

  • The maxillary buttress, hard palate, and mandible heal badly because chewing hammers the fragments apart — and pain on chewing matters.
  • In the mandible, occlusal alignment beats anatomic alignment — every tooth must meet its counterpart.
  • See one mandible fracture, hunt for a second — usually contralateral.
  • It's a subcondylar fracture, not a ramus fracture — and it's the second most common one.
  • For the ZMC, report displacement and rotation against the normal interzygomatic distance.
  • Fractures are planes, not lines — think them across the face and into the skull base.
  • A deformed zygomatic arch with no visible fracture line can still be an acute fracture — don't dismiss it.
  • Say herniation, not entrapment — entrapment is a clinical diagnosis.
  • Always reach the orbital apex; hematoma at the optic canal bottleneck can cost vision.
  • The tiny NOE avulsion means a torn medial canthal ligament — find it by asymmetric globe-to-medial-rim distance.

Teaching visuals

Critical facial fractures: ZMC, NOE & Le FortName the fracture by its defining components, not a laundry list of lines.1234pterygoid plates (posterior, behind maxilla)ZMC complex (tripod / quadripod)4 articulations disrupt; malar fragment rotates1 Zygomaticofrontal suture (lateral orbit)2 Inferior orbital rim / ZM buttress3 Zygomaticosphenoid = lateral orbital wall4 Zygomatic archReport tell: rotation, and compare theinterzygomatic distance to the other side.NOE (naso-orbito-ethmoid)Central; defining sign is TELECANTHUSNasofrontal junction comminutesMedial orbital walls (lamina papyracea)● Medial canthal tendon / lacrimal apparatusTELECANTHUS = widened intercanthal distance.Mark the canthal attachment — that detachmentis what the surgeon repairs.Le Fort I / II / IIIOne skull, three planes of separationI Guérin: horizontal maxilla → floating palateII Pyramidal: nasofrontal + orbital rim + buttressIII Craniofacial dissociation: arch + lat wall + NFALL THREE cross the PTERYGOID PLATES.Confirm there — the plates sit posterior to themaxilla (not seen on this frontal view); checkon axial CT.Reporting axis — a ranked surgical list, not a laundry listRank by what changes the operation. The maxillary buttress, hard palate & mandible heal badly because chewing pulls the fragments apart — flag those first.For the mandible, the goal is occlusal alignment (how the teeth meet), not anatomic alignment.One mandible fracture → hunt the second (the ring usually breaks twice; the partner is typically contralateral).
Critical Facial Fractures — ZMC, NOE, Le Fort

Source lectures

  • Critical Fractures of the Face, Part 1
  • Critical Fractures of the Face, Part 2

Educational material for radiology residents and neuroradiology fellows. Nothing here drives individual patient care, and it contains no patient data.