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5 Written questions

5 Matching questions

  1. Treatement of posterior table frontal sinus fractures.
  2. Absolute and relative indications for open reduction of subcondylar fx
  3. Best radiologic view of subcondylar fx
  4. Describe Champy lines of osteosynthesis.
  5. Describe the direction of force on the mandible for each muscle:

    1. Temporalis
    2. Lateral pterygoid
    3. Medial pterygoid
    4. Masseter
    5. Geniohyoid
    6. Digastric
  1. a 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
  2. b
    Some say panorex for subcondylar. Otherwise, Towne's view.
  3. c If no displacement or e/o CFS leak, observe and give abx. If displaced, obliteration and possible repair of dural tear. Cranialization reserved for fracture with significant bone loss or comminution.
  4. d
    "ideal lines of osteosynthesis" across the mandibular angle where the compressive and tensile forces from mastication can be countered with only monocortical fixation
  5. e
    1. Temporalis pulls coronoid posterosuperiorly.
    2. Lateral pterygoid pulls condyle anteroinferiorly.
    3 & 4. Masseter & medial pterygoid pull the angle anterosuperiorly.
    5 & 6. Geniohyoid and digastric pull mentum inferoposteriorly.

5 Multiple choice questions

  1. 6%
  2. anterior and medial

  3. zygomas

  4. Class II: retrognathism
    Class III: prognathism

5 True/False questions

  1. how do you treat frostbite of the ear?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


  2. Describe vertically unfavorable mandible fractures.


  3. What are the boundaries of the zones of the neck for penetrating trauma
    Zone 1: thoracic inlet inferiorly and the cricoid cartilage superiorly
    Zone 2: inferior border of cricoid cartilage to the angle of the mandible
    Zone 3: angle of the mandible to the base of the skull


  4. When do fibrillation potentials appear in Wallerian degeneration?Associated fibrillation potentials show up starting 3 days after injury.


  5. Long-term complications of orbital blow outdiploplia and enopthalmos