← H&N trauma Test
5 Written Questions
5 Matching Questions
- Treatment of an anterior table frontal sinus fracture involving the frontonasal duct.
- What forms the border between the symphisis and body of the mandible?
- which way does the lateral pterygoid tend to displace the condylar head
- how do you treat frostbite of the ear?
- Absolute and relative indications for open reduction of subcondylar fx
- a Obliteration vs. close monitoring with CT scans (in reliable patient only).
- b anterior and medial
- c Absolute
1. Dislocation into middle cranial fossa
2. Lateral extracapsular displacement
3. Inability to obtain adequate occlusion with closed reduction
4. Open joint with foreign body
1. Bilateral subcondylar fx's in edentulous patient (splinting impossible)
2. When splinting not recommended for medical reasons
3. Bilateral fractures associated with comminuted midfacial fractures
- d An imaginary line drawn at the canines
- e rapid rewarming in circulating water. avoid rubbing and dry heat as both of these predispose to liquefactive necrosis. surgical debridement not indicated for 3 weeks for final demarcation of injury
5 Multiple Choice Questions
- symphysis and condyle of contralateral side
"ideal lines of osteosynthesis" across the mandibular angle where the compressive and tensile forces from mastication can be countered with only monocortical fixation
- Usually involve the body and sympysis-parasymphysis areas.
The fracture line is posterior on the lateral cortex and anterior on the medial cortex. Therefore, the portion of the mandible posterior to the fracture is pulled medially, displacing the fracture. The mylohyoid is the primary muscle displacing the fracture.
- enophthalmos, dipoloplia, infraorbital nerve hypesthesia
- diploplia and enopthalmos
5 True/False Questions
When do fibrillation potentials appear in Wallerian degeneration? → within 3 hours of injury or from 3-7 days.
What is shown in a submental vertex view film? →
upper 2/3 of facial bones, maxillary sinuses
Types of mandible fractures that require treatment with soft diet only (no MMF or ORIF) → 1. isolated nondisplaced fractures of the coronoid
2. unilateral nondisplaced subcondylar fracture with normal occlusion
type of fracture most often associated with a mandibular body fracture → contralateral angle
Most likely long term outcome from conservative management of orbital blowout fracture (all-comers)? → Cheek hypesthesia. Enopthalmos likely if >50% of floor.