1
TCRN - Maxillofacial
Optic nerve laceration - Correct answer- Immediate blindness
Diplopia - Correct answer- This can result from orbital fractures
with extraocular entrapment from blowout fracture
Le forte 1 - Correct answer- Isolated maxilla movement / "free
floating"
Results from horizontal or downward force applied to anterior
face
Detachment of maxilla at level of nasal floor
To assess- hold with thumb and forefinger and gently attmept to
move
Commonly associated w loose or broken teeth
Le fort 2 - Correct answer- Seperation of the midface in pyramidal
shape (shape o2 mask)
1
, 2
Horizontal impact to upper midface
Le fort I plus extension of fx thru orbital rim, orbital wall, ethmoid
sinus , nose
Can be assoc w CSF leak
Loss of smell
Le fort 3 - Correct answer- Total craniofacial separation
Gently rocking maxilla produces movement of entire midface,
independent of skull
Massive swelling /"beachball" appearance
Hyphema - Correct answer- Accumulation of blood in anterior
chamber of eye
Visual impairment related to Amount of occlusion from
hemorrhage
Direct blow to globe of eye
2
TCRN - Maxillofacial
Optic nerve laceration - Correct answer- Immediate blindness
Diplopia - Correct answer- This can result from orbital fractures
with extraocular entrapment from blowout fracture
Le forte 1 - Correct answer- Isolated maxilla movement / "free
floating"
Results from horizontal or downward force applied to anterior
face
Detachment of maxilla at level of nasal floor
To assess- hold with thumb and forefinger and gently attmept to
move
Commonly associated w loose or broken teeth
Le fort 2 - Correct answer- Seperation of the midface in pyramidal
shape (shape o2 mask)
1
, 2
Horizontal impact to upper midface
Le fort I plus extension of fx thru orbital rim, orbital wall, ethmoid
sinus , nose
Can be assoc w CSF leak
Loss of smell
Le fort 3 - Correct answer- Total craniofacial separation
Gently rocking maxilla produces movement of entire midface,
independent of skull
Massive swelling /"beachball" appearance
Hyphema - Correct answer- Accumulation of blood in anterior
chamber of eye
Visual impairment related to Amount of occlusion from
hemorrhage
Direct blow to globe of eye
2
