BACKGROUND The pathogenesis of traumatic TMJ ankylosis remains unclear. This study aimed to verify the role of the lateral pterygoid muscle in the pathogenesis of traumatic temporomandibular joint (TMJ) bony ankylosis. METHODS Eight 6-month-old male sheep were used in this study. Bilateral TMJ osteotomies were performed to induce sagittal fractures of the mandibular condyle. The lateral one-f...

Rodents are defined by their unique masticatory apparatus and are frequently separated into three nonmonophyletic groups--sciuromorphs, hystricomorphs, and myomorphs--based on the morphology of their masticatory muscles. Despite several comprehensive dissections in previous work, inconsistencies persist as to the exact morphology of the rodent jaw-closing musculature, particularly, the masseter...

Introduction Complete or partial ossification of the pterygospinous ligament that connects the posterior border of the lateral pterygoid plate to the spine of the sphenoid bone occurs in 1-31.2% of people [1,2]. The ossified pterygospinous ligament is detected on the lateral or medial side or crossing over the foramen ovale on the radiographs of the dry scull in the axial projection with the be...

purpose: to describe the clinical findings, preoperative radiologic findings and results of surgery in a patient with congenital bilateral hypoplasia of medial rectus muscle case report: a 50-year-old man presented with large angle incomitant horizontal deviation with marked deficit of adduction of both eyes. mri finding defined very thin medial rectus muscle. intraoperatively medial rectus mus...

lrotrusion of the mandible, with the attached muscular mass of the tongue, aids in maintaining a patent upper airway. In contrast, passive retrusion of the mandible and tongue, when the body is in the semireclined or reclined position, could compromise the airway. For example, it has been postulated that one factor increasing the risk of sudden infant death syndrome is allowing an infant to sle...

PURPOSE The goal of this study was to determine whether the medial rectus muscles of patients with a history of medial rectus underaction or overaction show alterations in the process of satellite cell activation when compared with normal age-matched control muscles. METHODS Medial rectus muscles were obtained with consent from adult patients undergoing surgical resection due to medial rectus...