Question:
During resection of submandibular gland, there is accidental injury to a structure running superior to the posterior belly of digastric muscle. Which of the following structure is likely to be injured?
During resection of submandibular gland, there is accidental injury to a structure running superior to the posterior belly of digastric muscle. Which of the following structure is likely to be injured?
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In submandibular gland surgery, always remember the marginal mandibular nerve is at risk.
Updated On: May 14, 2026
- Lingual nerve
- Marginal mandibular nerve
- Trigeminal nerve
- Hypoglossal nerve
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The Correct Option is B
Solution and Explanation
Concept:
The marginal mandibular branch of the facial nerve is clinically important during surgeries in the submandibular region.
Step 1: Identify the surgical area.
The surgery is: \[ \text{Submandibular gland resection} \]
Step 2: Recall nerve at risk.
The marginal mandibular nerve runs near the lower border of mandible and is at risk during submandibular gland surgery.
Step 3: Choose the injured structure.
Thus, the likely injured structure is: \[ \text{Marginal mandibular nerve} \]
Step 1: Identify the surgical area.
The surgery is: \[ \text{Submandibular gland resection} \]
Step 2: Recall nerve at risk.
The marginal mandibular nerve runs near the lower border of mandible and is at risk during submandibular gland surgery.
Step 3: Choose the injured structure.
Thus, the likely injured structure is: \[ \text{Marginal mandibular nerve} \]
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