Infratemporal Fossa Flashcards
Boundaries of Infratemporal Fossa
Laterally: ramus of mandible
Medially: lateral pterygoid plate
Anteriorly: posterior maxilla
Posteriorly: mastoid, styloid process
Superiorly: greater wing of sphenoid
Inferiorly: mandibular attachment of medial pterygoid
Muscles of mastication
Temporalis
Masseter
Lateral pterygoid
medial pterygoid
Draw infratemporal fossa arterial supply
Compare
Pterygoid plexus importance in spread of infection to cavernous sinus
Proximity
Nerves in infratemporal fossa
Mandibular V3
Auriculotemporal
Inferior alveoolar
Lingual
Chorda Tympani
Otic ganglion
Components of temporomandibular joint
Articular tubercle of temporal bone
Mandibular fossa of temporal bone
Articular disk
Head of mandible
Ligaments of temporomandibular joint
joint capsule
lateral ligament
stylomandibular ligament
Sphenomandibular ligament
Temporomandibular joint innervation
Branches of V3
- Auriculotemporal nerve
- deep temporal nerve
- masseteric nerve
Temporomandibular joint movements
Elevation (closing)
Depression (opening)
Protrusion
Retrusion
Lateral
Temporomandibular joint closing
temporalis, masseter, medial pterygoid
Temporomandibular joint opening
lateral pterygoid, suprahyoid & infrahyoid muscles
Temporomandibular joint protrusion
lateral pterygoid, masseter, medial pterygoid
Temporomandibular joint retrusion
temporalis, masseter
Lateral movement of temporomandibular joint
temporalis of same side, pterygoids of opposite side, masseter
