lateral pterygoid plate


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lat·er·al pter·y·goid plate

[TA]
the larger and more lateral of the two bony plates extending downward from the point of union of the body and greater wing of the sphenoid bone on either side; forms medial wall of infratemporal fossa and gives origin to the pterygoid muscles.
References in periodicals archive ?
CT scan revealed linear un-displaced fracture of right frontal bone extending up to the roof and right ethmoid sinus, anterior clinoid process and lateral pterygoid plate, fracture of medial and lateral wall of the right orbit, and fracture of right ramus of the mandible.
A common cause of chronic facial pain syndrome is trigeminal neuralgia, which can be alleviated by injecting the superficial branches of the nerve, such as the supraorbital, infraorbital, and mental nerves, and deep injection of the maxillary nerve in the pterygopalatine fossa and/or the mandibular nerve posterior to the lateral pterygoid plate [1].
The mandibular nerve leaves the middle cranial fossa through the foramen ovale and descends posterior to the lateral pterygoid plate (Figure 7) between the lateral and the medial pterygoid muscles.
The lateral pterygoid muscle can be seen originating from the condylar process and attaching to the lateral pterygoid plate. The power or color Doppler mode can be turned on to identify the sphenoid palatine artery, which is a branch of the maxillary artery, flowing to the pterygoid palatine fossa.
The examiner should place his index or little finger at the maxillary third molar area and to move it posteriorly, superiorly and medially behind the tuberosity until the outer surface of lateral pterygoid plate is reached.9
Infratemporal space abscess is usually difficult to diagnose because this space is surrounded with bones like mandibular ramus, sphenoid bone and lateral pterygoid plate which prevents the abscess to give symptoms like swelling and/or erythema.
The mean extracranial distances between the JF and surrounding structures were recorded: i) JF and mastoid process (right: 21.91 mm; left: 21.94 mm); ii) JF and foramen magnum (right: 22.21 mm; left: 22.47 mm); iii) JF and vomer (right: 34.21 mm; left: 33.68 mm); iv) JF and medial pterygoid plate (right: 25.86 mm; left: 24.32 mm); v) JF and lateral pterygoid plate (right: 23.97 mm; left: 22.89 mm); vi) JF and occipital condyles (right: 4.87 mm; left: 4.96 mm) (Table II).
The mean distances between the JF and the medial and lateral pterygoid plates and the vomer were greater on the right side than the left side.
Position of the foramen ovale in the greater wing of sphenoid bone is close to the upper end of posterior margin of lateral pterygoid plate, lateral to the foramen lacerum and most commonly medial to foramen spinosum.
The medial pterygoid plate is narrower and longer while the lateral pterygoid plate is broad, thin, and everted; a variable pterygospinous process on its irregular posterior border is connected by a ligament (sometimes ossified) to the sphenoid spine [1].
Jones [2] states that lateral pterygoid plate is broader and shorter than the medial and is directed backwards and slightly laterally.
Computed tomography (CT) was done which demonstrated calcified plaques in the left medial and lateral pterygoid muscles extending from the lateral pterygoid plate to their insertions into the ramus neck of the mandible respectively (Figure 3).