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5 Written questions

5 Matching questions

  1. Long-term complications of orbital blow out
  2. How often do isolated fractures of a single site in the mandible occur?
  3. What is shown in a submental vertex view film?
  4. Ideal time for nasal fracture reduction
  5. Describe Champy lines of osteosynthesis.
  1. a enophthalmos, dipoloplia, infraorbital nerve hypesthesia
  2. b
    zygomas
  3. c 6%
  4. d within 3 hours of injury or from 3-7 days.
  5. e
    "ideal lines of osteosynthesis" across the mandibular angle where the compressive and tensile forces from mastication can be countered with only monocortical fixation

5 Multiple choice questions

  1. symphysis and condyle of contralateral side
  2. Obliteration vs. close monitoring with CT scans (in reliable patient only).
  3. 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. Class II: retrognathism
    Class III: prognathism
  5. 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 True/False questions

  1. Types of mandible fractures that require treatment with soft diet only (no MMF or ORIF)symphysis and condyle of contralateral side

          

  2. what are the most common complications of orbital floor repairenophthalmos, dipoloplia, infraorbital nerve hypesthesia

          

  3. Absolute and relative indications for open reduction of subcondylar fx
    Some say panorex for subcondylar. Otherwise, Towne's view.

          

  4. Most likely long term outcome from conservative management of orbital blowout fracture (all-comers)?Cheek hypesthesia. Enopthalmos likely if >50% of floor.

          

  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. 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.