Pterygopalatine fossa notes

The pterygopalatine fossa can be assimilated to an inverted square-based pyramid. Finally, the pterygopalatine fossa contains the pterygopalatine ganglion or sphenopalatine Meckel ganglion. With increasing familiarity with endoscopic techniques, increased understanding of sinus and perisinus anatomy, and advanced technology in the form of instrumentation and image-guided systems, there has been a natural extension of these techniques to include treatment of other disease processes.

Further elevation of the mucosa over the lateral nasal wall allowed identification of the sphenopalatine vascular pedicle exiting the sphenopalatine foramen, and dissection was continued superior to this to avoid vascular injury.

It is, however, a parasympathetic ganglion of the facial nerve cranial nerve VII. The sphenoid contents had a heterogeneous appearance. Fortunately, tumors of this area are rare.

The maxillary division of the trigeminal nerve The posterior superior alveolar nerves also branch from the maxillary nerve, exit the fossa via the pterygomaxillary fissure, and enter the maxillary tuberosity to serve the maxillary sinus, molars, and adjacent gingiva and cheek.

An endoscopic approach to the PPF can potentially reduce these risks, along with providing better visualization than headlight- or microscope-directed approaches.

In the pterygopalatine fossa the pterygopalatine ganglion is suspended from the maxillary nerve by 2 roots. The lateral wall faces directly into the infratemporal fossa, and the boundary between the two regions is the imaginary plane already described for the medial wall of the infratemporal fossa.

Course and Relationships It appears from the convex anterior border of the trigeminal ganglion, pierces the trigeminal cavern of dura to reach the lower part of the lateral wall of the cavernous sinus.

More laterally and anteriorly, the base of the pterygopalatine fossa continues with the lower orbital fissure, anteriorly delimited by the posterior edge of the orbital floor, belonging to the maxillary bone, and posteriorly by the inferior edge of the sphenoid greater wing.

The Pterygopalatine Fossa

The patient developed some mild hypesthesia of the nasolabial fold postoperatively. A curved probe was used to palpate the sphenopalatine foramen between the posterior wall of the maxillary sinus and the body of the sphenoid boneand the upper portion of the posterior wall of the maxillary sinus was removed with curettes and rongeurs to expose the PPF.

Maxillary Artery The third, or pterygopalatine portion, of the maxillary artery enters the pterygopalatine fossa from the infratemporal fossa via the pterygomaxillary fissure Maxillary artery and its distribution in the deep face Branches of the pterygopalatine portion of the maxillary artery are the posterosuperior alveolar, infraorbital, greater palatine, pharyngeal, and sphenopalatine arteries as well as the artery of the pterygoid canal.

This ganglion receives its parasympathetic preganglionic root by way of the pterygoid canal, which opens onto the posterior wall of the fossa. The multiple communications of the PPF with the deep neck spaces serve as ready pathways for loco-regional spread of disease.

The lower bigger head originates from the lateral surface of the lateral pterygoid plate of the sphenoid bone. It has connections with the infratemporal fossa laterally through the pterygomaxillary fissure, the posterior nasal cavity medially through the sphenopalatine foramen, the orbit superiorly through the inferior orbital fissure, and the palate inferiorly through the palatine foramina.

Postoperatively the patient was observed overnight and discharged the following morning. The patient was counseled regarding the risk of vascular injury to the internal maxillary artery and the possible need to convert to an open approach.

In the Pterygo-Palatine Fossa Ganglionic communication branches: Final pathological examination showed no abnormal tissue.

Infratemporal Fossa

Activities Lateral pterygoids of 2 sides depress the mandible opens the mouth by pulling forwards the condylar processes of the mandible and the articular discs of the temporomandibular joints.

The vessel ramifies within the maxilla to vascularize the maxillary sinus, molars, and premolars as well as the neighboring gingiva. Superiorly, the plate is divided into two processes bordering the sphenopalatine incisures. Its nasopalatine branch grooves the vomer bone in its path to the incisive foramen of the anterior hard palate, which it supplies.

These fibers are secretomotor in function. The apex of the pterygopalatine fossa is sited inferiorly and is formed by the meeting of the tuberosity of the maxilla with the pterygoid process and the lower portion of the vertical plate of the palatine bone.

The small artery of the pterygoid canal passes through the posterior wall of the pterygopalatine fossa via the pterygoid canal.

Pterygopalatine Fossa

The greater palatine nerve and its branches, the lesser palatine and posterior inferior nasal branches, descend through the pterygopalatine canal to supply regions of the palate, gingiva, tonsil, and lateral wall of the nasal fossa. A CT scan of the sinuses disclosed right sphenoid opacification with hyperostosis of the sinus walls.Mar 18,  · The third, or pterygopalatine portion, of the maxillary artery enters the pterygopalatine fossa from the infratemporal fossa via the pterygomaxillary fissure.

Maxillary artery and its distribution in the deep face: Lecture Notes In Dentistry. ObjectiveTo describe an endoscopic transnasal approach to the pterygopalatine fossa (PPF).DesignCase series of 3 mi-centre.comgAn academic medical May 26,  · The pterygopalatine fossa (PPF) is a small, clinically inaccessible, fat-filled space located in the deep face that serves as a major neurovascular crossroad between the oral cavity, nasal cavity, nasopharynx, orbit, masticator space, and the middle cranial fossa.

Due to its inherent complex. In human anatomy, the pterygopalatine fossa (sphenopalatine fossa) is a fossa in the skull. A human skull contains two pterygopalatine fossae -- one on the left side, and another on the right side.

The pterygopalatine fossa is a bi-lateral, cone-shaped depression extending from the infratemporal fossa to the nasal cavity via the sphenopalatine is located between the maxilla, sphenoid and palatine bones.

No notes for slide. Pterygopalatine fossa 1. passes anteriorly and traverses the infratemporal fossa.

It passes over the lateral pterygoid muscle and enters the pterygopalatine fossa. The pterygopalatine part of the maxillary artery, its third part, passes through the pterygomaxillary fissure and enters the pterygopalatine fossa.

Pterygopalatine fossa notes
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