Infratemporal article about infratemporal by the free. Infratemporal fossa at university of british columbia. Infratemporal fossa the infratemporal fossa is an irregularly shaped space deep and inferior to the zygomatic arch, deep to the ramus of the mandible, and posterior to the maxilla. The pterion is located in the temporal fossa, clinically the pterion is an important area because it overlies the anterior division of the middle meningeal artery and vein. The infratemporal fossa is located below the temporal fossa and is continuous with it. Jan 11, 2016 neuroanatomy season two the head and neck. Temporal, infratemporal, pterygopalatine fossa anatomy ant. It is closely associated with both the temporal and pterygopalatine fossae and acts as a conduit for neurovascular structures entering and leaving the cranial cavity.
The infratemporal fossa is an important crossroad for neurovascular structures entering from the skull mandibular nerve or from the neck maxillary artery and continuing to the viscerocranium supplying the maxilla, the mandible, and the face. The infratemporal fossa is the region deep to the ramus of the mandible. The infratemporal fossa is the space between the skull base, lateral pharyngeal wall, and the ramus of mandible. The boundary between the two regions is just conventional and can be identified as a paramedian. Its also called the parapharyngeal space or lateral pharyngeal space. In the human skull, the zygomatic bone is a paired irregular bone which articulates with the maxilla, the temporal bone, the sphenoid bone and the frontal bone. Fossa infratemporalis article about fossa infratemporalis. Infratemporal fossa, masticator space and parapharyngeal. Choose from 500 different sets of infratemporal fossa flashcards on quizlet. Microsurgical anatomy of the infratemporal fossa request pdf. Pair of temporal lines superior and inferior temporal lines that arch across the skull from the zygomatic process of the frontal bone to the supramastoid crest.
The pterygopalatine fossa ppf is a coneshaped depression deep to the. In cases with extensive lateral extension to infratemporal fossa with or without intracranial involvement, a midfacial degloving approach or weber fergusons approach gave a good exposure for tumour clearance. Infratemporal fossa, temporomandibular joint, and pterygopalatine fossa. The infratemporal fossa, also known as infratemporal or zygomatic region, is a space normally not explorable.
The anatomic space defined as the infratemporal fossa contains a variety of. The temporal fossa has the following borders anterior. Mancuso key points magnetic resonance imaging and computed tomography provide critical and usually definitive data needed in the diagnosis and management of masticator space, buccal space, and infratemporal fossa masses. Pterygopalatine fossa discussed by jennifer bruecknercollins duration. Masticator space, buccal space, and infratemporal fossa masses. The pterygopalatine fossa ppf, less commonly known as the sphenopalatine fossa, is a small but complex space of the deep face in the shape of an inverted pyramid located between the maxillary bone anteriorly, the pterygoid process posteriorly and inferior to the orbital apex. Surgical anatomy of the infratemporal fossa integrates the basic clinical and surgical anatomy of the. The fossa is actually open to the neck posteroinferiorly and in doing so has no true anatomical floor. A human skull contains two pterygopalatine fossaeone on the left side, and another on the right side. The fossa is located between the pterygoid process and the maxillary tuberosity, close to the orbital apex.
Oct 30, 2015 this is a brief video tutorial on the infratemporal fossa. The infratemporal fossa communicates frontally with the tuberosity of the maxillary bone, superiorly with the temporal region, posteriorly with the parotid lodge, medially with the pterygopalatine fossa, and inferiorly with the pharynx fig. Infratemporal definition of infratemporal by medical dictionary. Trauma in this region can lead to an extradural haematoma, which can result in herniation of brain tissue and ischemia. Infratemporal fossa uams department of anatomy and. The space in which this abscess develops is the superior extension of the pterygomandibular space. Infratemporal fossa is a wedgeshaped space below the middle cranial fossa, deep to the ramus of the mandible and posterior to the maxilla. Infratemporal fossa surgical approaches to primary. Lab objectives quick tips using the sectra table, you will identify features of the superficial and deep face. The infratemporal fossa, also known as infratemporal or zygomatic region, is a space normally not explorable because it is medial to the mandibular branch. Infratemporal crest medical definition merriamwebster. The infratemporal fossa borders contents teachmeanatomy. Posterior surface of the frontal process of the zygomatic bone and the posterior surface of the zygomatic process of the frontal bone. It acts as a conduit for many neurovascular structures that travel between the cranial cavity and other structures of the head.
The temporal fossa is a shallow depression on the temporal lines and one of the be massive marks on the skull. Infratemporal definition of infratemporal by medical. You may not embed one of our images on your web page without a link back to our site. The infratemporal fossa communicates frontally with the tuberosity of the maxillary bone, superiorly with the temporal region, posteriorly with the parotid lodge, medially with the pterygopalatine fossa, and inferiorly. The infratemporal fossa is an irregularly shaped cavity, situated below and medial to the zygomatic arch. It is not fully enclosed by bone in all directions, and it contains superficial muscles that are visible during dissection after removing skin and fascia. It communicates via canals, fissur this website provides over 0 free medical books and more for all students and doctors this website the best choice for medical students during and after learning medicine. Temporal fossa wikimili, the best wikipedia reader. Lateral to the pterygoid plate and the pterygomaxillary fissure a communication between the infratemporal fossa and the pterygopalatine fossa. The anatomic space defined as the infratemporal fossa contains a variety of nerves, arteries, veins, and muscles. When seen on the skull without the soft tissues, these two anatomical landmarks can be seen to communicate with one another.
The occipital bones, including, temporal bone, sphenoid bone, parietal bone and the frontal bone put up to its concave wall. Neoplastic processes involving the infratemporal fossa may originate from the tissues in the region, but more often are the result of. Lateral pterygoid provides a key to understanding the relationships of structures within the infratemporal fossa. The pterygopalatine fossa ppf is a coneshaped depression deep to the infratemporal fossa and posterior to the maxilla on both sides of the skull. Dec 05, 2002 surgical management of the infratemporal fossa langdon, john d. Videos produced in 2016 at the faculty of medicine, university of british columbia, canada. Laterally ramus and coronoid process of the mandible. This muscle lies in the roof of the fossa and runs anteroposteriorly in a more or less horizontal plane from the region of the pterygoid plates to the mandibular condyle. Known to affect the following sites in preference anterior neck, infratemporal fossa, oral cavity, hypopharynx, larynx, parotid gland and parapharyngeal space. It is situated at the upper and lateral part of the face and forms the prominence of the cheek, part of the lateral wall and floor of the orbit, and parts of the temporal fossa and the infratemporal fossa. It is situated superiorly to the infratemporal fossa. Infratemporal fossa, masticator space and parapharyngeal space. The infratemporal fossa has the following boundaries. The infratemporal fossa is an irregularly shaped space deep and inferior to the zygomatic arch, deep to the ramus of the mandible and posterior to the maxilla.
If you would like a large, unwatermarked image for your web page or blog, please purchase the appropriate license. Less commonly they can be found in the anterior neck, infratemporal fossa, submandibular space, pharynx, larynx, and parotid gland and in or around the oral cavity 2,3. The face, scalp, infratemporal fossa, and pterygopalatine fossa the dissection of the head is foremost a dissection of the course and distribution of the cranial nerves and the. The infratemporal fossa accommodates the insertion of the temporalis muscle, medial and lateral pterygoid muscles, mandibular nerve cranial nerve cn v3, otic ganglion, chorda tympani nerve, maxillary artery, and the pterygoid plexus of the veins. Infratemporal fossa, boundaries and contents, anatomy qa. The infratemporal fossa is a space that exists below the temporal fossa. The osseous boundaries of the infratemporal fossa are the posterolateral maxilla, lateral pterygoid plate, mandib ular ramus and tympanic part. The infratemporal fossa is a complex area located at the base of the skull, deep to the masseter muscle. The fossa communicates with the temporal fossa via the space deep to the zygomatic arch. Mar 19, 2020 the temporal fossa is a depression on the temporal region and one of the largest landmarks on the skull. This book is distributed under the terms of the creative commons.
This space communicates with both the nasal and oral cavities, the infratemporal fossa, the orbit, the pharynx, and the middle. Infratemporal fossa an overview sciencedirect topics. The infratemporal fossa is a complex space of the face that lies posterolateral to the maxillary sinus and many important nerves and vessels traverse it gross anatomy. Anatomy, pterygopalatine fossa statpearls ncbi bookshelf. A clinically significant feature of the infratemporal fossa involves potentially lifethreatening spread of infection from the infratemporal fossa through the pterygoid plexus to the cavernous sinus. The medial boundary is formed by the superior constrictor, tensor and levator veli palatini muscles. The infratemporal fossa has the following boundaries figure 211a. This approach is divided into three exposures, types a, b, and c, depending on the amount of anterior exposure required.
In fact, the lateral pterygoid splits the fossa contents in half the branches of the mandibular nerve lay deep to the muscle, while the maxillary artery is superficial to. This space communicates with both the nasal and oral cavities, the infratemporal fossa, the orbit, the pharynx, and the middle cranial. The lateral pterygoid forms the foundation whereupon all other contents of the fossa are related. Although controversy exists about the exact boundaries of the infratemporal fossa, we define it as the area bounded anteriorly by the posterolateral aspect of the maxilla and the inferior orbital fissure fig. Each fossa is a coneshaped paired depression deep to the infratemporal fossa and posterior to the maxilla on each side of the skull, located between the pterygoid process and the maxillary tuberosity close to the apex of the orbit. Anatomy, head and neck, internal maxillary arteries. This is a brief video tutorial on the infratemporal fossa. The infratemporal fossa approach, developed by fisch 106 in 1977, is a craniotemporocervical approach for exposure of the lateral inferior skull base. It is located between the maxilla, sphenoid and palatine bones, and communicates with other regions of the skull and facial skeleton via several canals and foramina. An irregular space situated below and medial to the zygomatic arch, behind the maxilla and medial to the upper part of the ramus of the mandible explanation of fossa infratemporalis. Surgical anatomy of the infratemporal fossa integrates the basic clinical and surgical anatomy of the regions. Infratemporal definition of infratemporal by the free.
The roof of the infratemporal fossa is open to the temporal fossa lateral to the greater wing of sphenoid, deep to the zygomatic arch. It contains comprehensive clinical coverage of the infratemporal fossa with chapters relating to anatomy, local anesthesia, spread of infection, trauma, tumors, surgical access and pain. The infratemporal fossa is an irregularly shaped cavity in the face that is touted as being one of the most anatomically complex regions in the head and neck. The types of structures contained within the infratemporal fossa include muscles, nerves, and blood vessels. Laterally, this space is bounded by the ramus of the mandible and the temporalis muscle, while medially, it is bounded by themedial and lateral pterygoid muscles, and is continuous with the temporal fossa fig. The posterior boundary of the infratemporal fossa is broadly defined but. Temporal, infratemporal, pterygopalatine fossa anatomy. Mar 31, 2015 infratemporal fossa the infratemporal fossa is an irregularly shaped space deep and inferior to the zygomatic arch, deep to the ramus of the mandible, and posterior to the maxilla. From here, the artery travels obliquely to the pterygopalatine fossa through. A bullet in the maxillary antrum and infratemporal fossa. Anatomy, head and neck, infratemporal fossa statpearls ncbi. Anatomy, head and neck, infratemporal fossa statpearls.
The fossa is shaped irregularly and is situated below and medial to the zygomatic arch. This paper describes a case of limited mouth opening, secondary to facial trauma by cuttingincised object glass, whose fragments had not been diagnosed in the immediate posttrauma care, remaining in the region of the infratemporal fossa. This cavity contains several of the structures responsible for supplying the face and head. Review the boundaries and contents of the infratemporal fossa. The infratemporal fossa is a complex and irregularly shaped space, located deep to the masseter muscle. Situated between the maxilla, sphenoid, and palatine bones. Anterior to the mastoid and styloid processes of the temporal bone. Infratemporal fossa fig 2 from the atlas of human anatomy, icon learning systems boundaries the boundaries of the infratemporal fossa are. Pdf tumors of the infratemporal fossa researchgate. Each fossa is a coneshaped paired depression deep to the infratemporal fossa and posterior to the maxilla on each side of the skull, located between the pterygoid process and. Infratemporal fossa definition of infratemporal fossa by.
Infratemporal fossa questions and study guide quizlet. There is a need to define the anatomic boundaries contents of the itf, masticator space, parapharyngeal space pps, pterygopalatine fossa, ventral skull base, and paramedian skull base, as evidence from publications. The temporal bone, the sphenoid bone, the parietal bone and the frontal bone contribute to its concave wall. The osseous boundaries of the infratemporal fossa are the posterolateral maxilla, lateral pterygoid plate, mandib ular ramus and tympanic part of the temporal bone 3. The parotid gland, mandible, and lateral pterygoid. Pdf on jun 30, 2009, huseyin avni balcioglu and others published surgical anatomy of the infratemporal fossa.
Infratemporal fossa, temporomandibular joint, and pterygopalatine fossa by vishram singh at barnes. Surgical management of the infratemporal fossa langdon, john d. Instant anatomy is a specialised web site for you to learn all about human anatomy of the body with diagrams, podcasts and revision questions. Temporal, infratemporal, pterygopalatine fossa anatomy ant 1003 with liuzzi at lake erie college of osteopathic medicine studyblue.
The branches of the mandibular nerve and the attachments of the. The location of the infratemporal fossa makes it an area of interest for pathology treated by many surgical subspecialties including otolaryngology, neurosurgery, and maxillofacial surgery. Infratemporal fossa surgical approaches to primaryrecurrent malignancies of salivary origin. Together via a gap deep to the zygomatic arch it interacts with the temporal fossa. Mar 28, 2020 the infratemporal fossa is a cavity with an irregular shape located below the zygomatic arch, also known as the cheek bone. In human anatomy, the pterygopalatine fossa sphenopalatine fossa is a fossa in the skull. The pterygopalatine fossa is a bilateral, coneshaped depression extending deep from the infratemporal fossa all the way to the nasal cavity via the sphenopalatine foramen. Benign tumors involving the infratemporal fossa always respect these boundaries and expand in the direction of soft tissue planes, or follow preexistant pathways and foramen described above. The infratemporal fossa is the space underneath the base of the skull, between ramus of the mandible and the side wall of the pharynx. Study 77 temporal, infratemporal, pterygopalatine fossa flashcards from adrian k. Lateral to the pterygoid plate and the pterygomaxillary fissure, a communication between the infratemporal fossa and the pterygopalatine fossa. It communicates with the temporal fossa through the interval between deep to the zygomatic arch and superficial to the cranial bones. It is superior to the infratemporal fossa which lies beneath the zygomatic arch.
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