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TEMPORAL
INFRATEMPORAL
FOSSA
Dr sana yaseen
Anatomy Dept.
KIMS
Temporal infratemporal fossa
Temporal infratemporal fossa
TEMPORAL FOSSA
■ Above: temporal line of frontal bone
■ Below : upper border of the Zygomatic arch laterally,
infratemporal crest of the greater wing of the sphenoid bone
medially.
■ Anterior wall: Zygomatic bones and parts of frontal and sphenoid
bone. (separate fossa from the orbit)
■ Floor: H shape suture formed by the fusion of 4 bones.
– Deep to pterion runs: middle meningeal vein, anterior division of
middle meningeal artery, stem of lateral sulcus of brain.
Temporal infratemporal fossa
Temporal infratemporal fossa
CONTENTS:
■ Temporalis muscle and its fascia
■ Deep temporal nerve and vessles
■ Auriculotemporal nerve
■ Superficial temporal artery
Temporal infratemporal fossa
INFRATEMPORAL FOSSA
■ Roof: medially infratemporal surface of greater wing of sphenoid ,
squamous part of temporal bone
laterally: incomplete as it communicates with temporal fossa
■ Floor is open:
■ Medial wall: lateral pterygoid plate , pyramidal process of palatine bone
■ Lateral wall: ramus of mandible
■ Anterior wall: posterior surface of maxilla, medial surface of Zygomatic
bone
■ Posterior wall: is open
pyramidal process of
palatine bone
CONTENTS
■ Lateral pterygoid and medial pterygoid muscles
■ Branches of mandibular nerve
■ Otic ganglion
■ Chorda tympani
■ Maxillary artery
■ Pterygoid venous plexus
■ Spheno mandibular ligament
Temporal infratemporal fossa
Temporal infratemporal fossa
Temporal infratemporal fossa

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Temporal infratemporal fossa

  • 4. TEMPORAL FOSSA ■ Above: temporal line of frontal bone ■ Below : upper border of the Zygomatic arch laterally, infratemporal crest of the greater wing of the sphenoid bone medially. ■ Anterior wall: Zygomatic bones and parts of frontal and sphenoid bone. (separate fossa from the orbit) ■ Floor: H shape suture formed by the fusion of 4 bones. – Deep to pterion runs: middle meningeal vein, anterior division of middle meningeal artery, stem of lateral sulcus of brain.
  • 7. CONTENTS: ■ Temporalis muscle and its fascia ■ Deep temporal nerve and vessles ■ Auriculotemporal nerve ■ Superficial temporal artery
  • 9. INFRATEMPORAL FOSSA ■ Roof: medially infratemporal surface of greater wing of sphenoid , squamous part of temporal bone laterally: incomplete as it communicates with temporal fossa ■ Floor is open: ■ Medial wall: lateral pterygoid plate , pyramidal process of palatine bone ■ Lateral wall: ramus of mandible ■ Anterior wall: posterior surface of maxilla, medial surface of Zygomatic bone ■ Posterior wall: is open
  • 11. CONTENTS ■ Lateral pterygoid and medial pterygoid muscles ■ Branches of mandibular nerve ■ Otic ganglion ■ Chorda tympani ■ Maxillary artery ■ Pterygoid venous plexus ■ Spheno mandibular ligament