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Anatomy of the Temporal Bone and Skull Base with Surgical Implications
Built from Haynes-Glasscock-Shambaugh Surgery of the Ear, Seventh Edition
What’s inside
16 sections · 114 slides
Overview
- Scope of temporal bone surgical anatomy
- Origin of temporal bone terminology
- Three components of the ear
Schematic views of the ear
- Coronal schematic of the ear
- Axial schematic of the ear
- Lateral schematic of the ear
External ear
- Functional anatomy of the pinna
- External surface and cartilage framework of the pinna
- Sensory innervation of pinna and canal
- Sensory innervation of the pinna and ear canal
Osseous temporal bone
- Four portions of the temporal bone
- Surface landmarks for mastoidectomy
- Temporal bone surface anatomy and temporalis attachment
- Lateral and medial views of the temporal bone
- Suture lines of the tympanic bone
- Tympanosquamous and tympanomastoid sutures
- Shape of the tympanic bone at annulus and bony cartilaginous junction
- Relationship of the ear canal to the temporomandibular joint
Middle ear
- Middle and inner ear in one view
- Layers and regions of the tympanic membrane
- Compartments of the tympanic cavity
- Three layers and regions of the tympanic membrane
- Protympanum and epitympanum
Facial nerve
- Segments of the facial nerve
- Course and segments of the facial nerve
- Intratemporal facial nerve and the Fallopian canal
- Intratemporal facial nerve within the Fallopian canal
- Extratemporal facial nerve
- Terminal branches of the facial nerve in the parotid
- Facial recess and chorda tympani
- Anatomy of the facial recess
Ossicles and posterior tympanic spaces
- Ossicular chain and its attachments
- Malleus, incus and stapes
- Variation in stapes superstructure orientation
- Facial nerve relations at the oval window
- Posterior tympanic spaces
- Anatomy of the posterior tympanic spaces
- Variable depth of the sinus tympani
Cochlea and central auditory pathway
- Fluid compartments of the cochlea
- Cochlea in mid-modiolar section
- Organ of Corti
- Organ of Corti
- Central auditory afferent pathway
- Central auditory afferent pathways
Vestibular system
- Otolithic organs
- Saccule and utricle, the otolithic organs
- Orientation of the semicircular canals
- Orientation of the semicircular canals
- Ampulla and cupula
- Central vestibular connections
- Central vestibular system
Pneumatization and the mastoid
- Variation in mastoid pneumatization
- Variation in mastoid pneumatization
- Exposure of the mastoid for mastoidectomy
- Mastoid landmarks after mastoidectomy
- Mastoid relationships in pneumatized and hypopneumatic ears
- Variation in petrous apex pneumatization
- Eustachian tube
- Course and relations of the Eustachian tube
- Routes of postoperative CSF leak
- Routes of CSF leakage after neurotologic surgery
- Vestibular aqueduct and endolymphatic sac
- Vestibular aqueduct and endolymphatic sac exposure
Cranial base
- Divisions of the skull base
- Osseous cranial base from below
- Oblique view of the cranial base
- Cranial base from above
Surgical approaches to the petrous bone
- Indications for the middle fossa approach
- Middle fossa view of the temporal bone
- Retrosigmoid view of the temporal bone
- Translabyrinthine view of the posterior fossa
- Cochlea, jugular bulb and carotid artery beneath the middle ear
Internal auditory canal and cerebellopontine angle
- Arrangement of nerves in the internal auditory canal
- Territories of the vestibular divisions
- Internal auditory canal and cerebellopontine angle from behind
- Orientation of nerves at the fundus
- Cranial nerve relations at the pons and medulla
Posterior fossa vascular anatomy
- Arterial supply to the cerebellum
- Arterial supply to the cerebellum
- Vertebrobasilar system and the labyrinthine artery
- Brainstem and vertebrobasilar system
Jugular foramen and the far lateral approach
- Contents of the jugular foramen
- Neural contents of the jugular foramen
- Regional anatomy of the jugular foramen
- Nerve relations in a jugular foramen approach
- Cranial nerve relations at three levels of the jugular foramen
- Neurovascular detail of the jugular foramen
- Surgical exposure of the jugular foramen
- Far lateral approach to the foramen magnum
- Bone removal in the far lateral approach
- Cervical exposure in the far lateral approach
Summary
- Key landmark relationships
- Anatomical variation that changes surgery
- Concluding points
- References
- References (continued)
- References (continued)
- Haynes-Glasscock-Shambaugh Surgery of the Ear, Seventh Edition
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