The Infratemporal Fossa

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The Infratemporal Fossa
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Boundaries of the Infratemporal Fossa

• Superior - infratemporal surface of the greater
  wing of the sphenoid and
  infratemporal surface of the
  temporal bones.
• Medial - lateral pterygoid plate.
• Anterior - posterior surface of the
  maxilla,Buccinator m.
• Lateral - Ramus and coronoid and condylar
  processes of mandible.
• Posterior - parotid gland, styloid muscles,
  internal carotid a.
• Inferior - lower border of the mandible.

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Facial Muscles
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Contents of the Infratemporal Fossa

• Muscles
• Temporalis
• Medial Pterygoid
• Lateral Pterygoid
• Nerves
• Branches of the Mandibular of V
• Chorda Tympani of VII

• Maxillary Artery Branches
• Pterygoid Venous Plexus

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Mandibular Nerve Branches

• Auriculotemporal
• Inferior Alveolar
• mylohyoid br.
• Lingual
• Long Buccal

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Branches of the Maxillary Artery

• First Third
• Deep Auricular
• Anterior Tympanic
• Middle Meningeal
• Accessory Meningeal
• Inferior Alveolar
• Middle Third
• Posterior Deep Temporal
• Pterygoid Arteries

• Anterior Deep Temporal
• Masseteric
• Buccal
• Terminal Third
• Posterior Superior Alveolar
• Pterygoid (Vidian)
• Sphenopalatine
• Descending Palatine
• Infraorbital

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