The superior border is formed by the squamous portion of the temporal bone and the greater wing of the sphenoid while the posterior boundary is defined by the tympanic and mastoid portions of the temporal bone. (A) Parasagittal, (B) coronal, and (C) axial illustrations of the infratemporal fossa on the left side. Knowledge of these calrelationships is extremely important to neurological surgeons, neuro-otologists, craniofacial, and head and neck surgeons. Multiple neural and vascular structures enter and exit the infratemporal fossa via foramina in the skull base. Key Words: infratemporal fossa, neuroanatomy, skull base approaches Eight cadaveric sides were dissected to study this regional and adjacent anatomy, which is reviewed here. It is a significant crossroads for neurovascular structures that traverse to and from the brain and brain stem. The infratemporal fossa is an anatomic space of great importance to neurological surgeons specializing in skull base surgery. Joseph’s Hospital and Medical Center, Phoenix, ArizonaĬurrent Address: †Quantum Neurological Surgery, Phoenix, Arizona Barrow-ASU Center for Preclinical Imagingĭivision of Neurological Surgery, Barrow Neurological Institute, St.Department of Translational Neuroscience.Department of ENT and Skull Base Surgery.Bioskills & Neurosurgery Research Laboratory.For Providers & Researchers Show submenu.Parkinson’s Disease & Movement Disorders.Center for Transitional Neuro-Rehabilitation.Sometimes it may be divided by a horizontal suture into a larger upper and small lower division. The zygoma ossifies from one center, appearing in fibrous tissue around the eighth week of life. maxillary border gives origin to part of levator labii superioris.tubercle of frontal process (of Whitnall) - lateral palpebrae ligament, a suspensory ligament and part of the aponeurosis of levator palpebrae superioris.posteroinferior border - masseter muscle.lateral surface attaches zygomaticus minor and major muscles.The zygoma articulates with the greater wing of sphenoid, orbital surface and lateral border of maxilla, zygomatic process of the temporal bone (completing the zygomatic arch), and zygomatic process of the frontal bone Attachments temporal process is directed backwards, has an oblique, serrated end articulating with the zygomatic process of temporal bone, forming the zygomatic arch at the temporozygomatic suture.frontal process articulates with the frontal bone above and greater wing of sphenoid posteriorly, and terminates at the frontozygomatic suture.posteromedial border articulates with greater wing of sphenoid above and orbital surface of maxilla below and serves as attachment for masseter muscle.
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