Possible association between mandibular repositioning device for sleep apnea and osseous lytic lesion with fracture of the coronoid process of the mandible: A case report. | LitMetric
Mandibular repositioning devices (MRDs) increase the patency of the upper airway by repositioning the mandible forward, resulting in displacement of the oropharyngeal tissues preventing upper airway collapsibility. Mandibular anterior repositioning is counteracted by muscle force from the temporalis muscle. A 39-year-old man had an osteolytic lesion with fracture of the coronoid process of the mandible secondary to wearing a MRD for sleep apnea. Continuous stress generated on the coronoid process temporalis muscle resulted in osteolysis and fracture of the coronoid process on the patient's right side, resulting in swelling and limited ability to open his mouth. The patient was managed with intravenous antibiotics to control the osteomyelitis and surgical debridement, with removal of the coronoid process of the mandible. It is unclear why the fracture only occurred on the right side. Pathologic fracture of the coronoid process due to chronic stress and secondary osteomyelitis is a rare severe complication of treatment for obstructive sleep apnea syndrome with a MRD.
The aim of the study was to investigate the shape of the mandible in Wistar albino rats using the geometric morphometric method. However, 'Is the shape of the mandible different in rats depending on gender?' the question formed the hypothesis of the study. For this purpose, a total of 52 rat mandibles, 31 female and 21 male rats, were used in the study.
Background: The terrible triad injury involves an ulnohumeral dislocation, radial head fracture, and coronoid process fracture. According to traditional teaching, these injuries are strongly associated with anterolateral coronoid tip fractures and can be addressed via a lateral approach to the elbow. However, recent small clinical series suggest that some terrible triad injuries have larger coronoid fractures involving the anteromedial facet.
T4b carcinomas are termed as very locally advanced carcinomas of the oral cavity and are deemed borderline resectable or unresectable. The role of surgery for these patients is not well defined. We therefore aimed to relook at the role of surgery for cT4b carcinoma of the oral cavity.
Background: In the treatment of terrible triad injury of the elbow (TTIE), the indication and the appropriate approach and sequence for coronoid process (CP) fixation remain debatable. No gold standard protocol has been established for CP fixation. In this study, we evaluated the midterm outcomes of coronoid-first repair through an anterior approach in patients with unstable TTIE.
