Infratemporal Fossa Medial Wall — MFDS Part 1 MCQ
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Correct answer: C — Lateral pterygoid plate of the sphenoid bone
The correct answer is C. The lateral pterygoid plate of the sphenoid forms the bony component of the medial wall of the infratemporal fossa; the medial pterygoid muscle also contributes to its soft-tissue boundary. The mandibular ramus forms the lateral wall, while the posterior surface of the maxilla, including the region of the maxillary tuberosity, forms the anterior wall. The infratemporal surface of the greater wing of the sphenoid forms most of the roof. The zygomatic arch overlies the region laterally and provides attachment for the masseter but does not form the medial wall.
Reference: Krmpotić-Nemanić J, Vinter I, Hat J, Jalsovec D. Mandibular neuralgia due to anatomical variations. European Archives of Oto-Rhino-Laryngology. 1999;256(4):205-208. https://pubmed.ncbi.nlm.nih.gov/10337513/