Question 161 · LDEK · Anesthetic techniques
The point of needle insertion in the case of a masseteric nerve block (Bercher’s technique) is:
- A. crossing of two lines - horizontal, running 1cm under and parallel to the zygomatic arch, and vertical running just 1cm anterior to the head of the mandible.
- B. angle created by the anterior margin of the masseter muscle and the lower rim of the zygomatic arch.
- C. 0.5 cm below the masticatory surface of the upper third molar, perpendicularly to the surface of the mucosa (with the mouth wide open).
- D. point just below the earlobe beyond the mandibular ramus.
- E. none of the above.
Hint
Think about where the masseteric nerve passes from the infratemporal fossa to the muscle and how that spot is reached through the skin.
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