O forame de Huschke e suas implicações clínicas

Abstract

Foramen of Huschke and its D D D D Duri ng temporal bone development and formation it isnoted the presence of a foramen in the medial portion of the external auditory canal (foramen of Huschke). This foramen is normally present until the age of 4 or 5 years old, but in some people it persists throughout life. The persistence of this foramen and its clinical implications related to the temporomandibular joint, ear and nearby structures has been reported by many authors. Therefore, it is important that dentists, otorhinolaryngologists, speech pathologist and physiotherapists have a wide knowledge about the consequences of the presence and persistence of the foramen of Huschke. Rev Bras Otorrinolaringol. V.69, n.3, 406-13, mai./jun. 2003 Palavras-chave: forame de Huschke, incidência, implicações clínicas. CASE REPORT RELATO DE CASO

Foramen tympanicum prevalence in the population of Southeast Brazil: a morphological study in computed tomography scans

“…The clinical implications related to the persistence of FT are widely discussed in the literature and the most current are otitis, infectious arthritis, herniation of the disc and fistulas in the external acoustic meatus. TMJ arthroscopy is an exam for diagnosing pathologies in the region, which is performed by a rigid optical fiber with a diameter varying between 1.7 and 2.7 mm [6,10,11]. These studies also showed that severe ear complications can develop during TMJ arthroscopy, due to the lack of preoperative detection of the presence of FT.…”

“…Although computed tomography is an expensive method, high-resolution imaging tests have proved to be a better technique for identifying the presence of FT when compared to conventional radiographs [6]. For instance, in a population with a prevalence of FT of 14.9%, the prevalence was higher in studies on cadavers (21.2%) than on radiographs (8.8%) [9].…”

“…In adults, the presence of FT is associated with the spread of infections originating in the external acoustic meatus, which affect surrounding regions such as the TMJ and the parotid gland; tumors originating in the mandibular fossa of the temporal bone, which uncommonly reach the external acoustic meatus; cases of spontaneous salivary fistula in the external acoustic meatus; and complications in TMJ arthroscopy [3,6,7]. Finally, the study of FT morphology and prevalence in dry skulls and CT scans indicated a difference between the sexes [5].…”