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Fratura transversal. Tomografia computadorizada em axial demonstra fratura transversal do osso temporal, translabiríntica, vista como uma linha radiolucente perpendicular ao maior eixo da pirâmide petrosa.
Source publication
A maioria das fraturas dos ossos temporais resulta de traumas cranianos bruscos, de alta energia, estando muitas vezes relacionadas a outras fraturas cranianas ou a politraumatismo. As fraturas e os deslocamentos da cadeia ossicular, na orelha média, representam umas das principais complicações das injúrias nos ossos temporais e, por isso, serão ab...
Contexts in source publication
Context 1
... classificação das fraturas do osso temporal ajuda a predizer as complicações associadas ao trauma, orientando, assim, o manejo e o tratamento do paciente (2,4,6) . ...
Context 2
... pacientes que sofrem trauma tem- poral, a perda auditiva de condução é a consequência mais comum nesse tipo de injúria, sendo os deslocamentos mais fre- quentes que as fraturas ossiculares (3,7,10,12) . ...
Context 3
... cinco tipos de deslocamentos: luxa- ção da articulação incudoestapedial; luxa- ção da articulação maleoloincudal; deslo- camento da bigorna; deslocamento do com- plexo maleoloincudal; deslocamento esta- pediovestibular (7,8,12,13) . ...
Context 4
... desarticulação incudoestapedial é a anormalidade pós-traumática mais comum da cadeia ossicular, o que se deve à tênue suspensão da bigorna entre o martelo e o estribo, firmemente ancorados (3,8,12) . Nas reconstruções axiais ou oblíquas a interrupção desta articulação aparece como um aumento do espaço entre a cabeça do estribo e o processo longo da bigorna (Fi- gura 4). ...
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Introduction:
Intracochlear pressure changes have been assumed to play a central role in hearing preservation during cochlear implantation. The pressure in different settings has been evaluated (temporal bones vs. cochlea models) and was found to have advantages and disadvantages. Experimentally, problems have been discussed to influence the resul...
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Citations
... Lateral traverses the bony labyrinth & is often associated with a perilymphatic fistula. Oblique fractures, also called mixed or complex fractures, are the most common types, followed by longitudinal and transverse fractures [1][2][3]. Ossicular chain dislocation may occur with a temporal bone fracture, traumatic tympanic membrane perforation, head injury or barotrauma. Longitudinal fracture usually occurs with a temporoparietal blow & causes conductive deafness due to ossicular disruption. ...
... Even though the patient's incus was dislocated into the external auditory canal while remaining attached to the stapes, his hearing was not affected and remained nearly normal. Rarely incus has been reported to extend into vestibule, carotid canal or tympanic membrane [2,3]. The causes are external injury to temporal bone, injury by knitting needle, ear bud or pick. ...
... As regards trauma mechanisms and main complications of each type of temporal fracture, they may be summarized as follows: a) longitudinal fractures generally occur in cases of temporoparietal trauma, commonly affecting the extra labyrinthine segment, and presenting as main complications ossicular lesion and hemotym panum; b) on the other hand, transverse fractures generally occur in cases of frontal/ occipital traumas, with translabyrin thine involvement, whose main complication is facial nerve weakness. 11 In the present study, among 22 cases of traumatic etiology, 6 cases were of transverse type, 11 were of longitudinal and 5 were of mixed type. HRCT showed Hemotympanum involvement in 11 cases, Facial nerve involvement in 6 cases, Labyrinthine involvementin 2 cases, Ossicular involvement in 1 case and Intracranial involvement in 5 cases. ...
... Five types of ossicular dislocations seen are: incudostapedial joint dislocation; malleusincus joint dislocation, Incus dislocation; dislocation of the malleoincudal complex; stapediovestibular dislocation. 2 ...
p class="abstract">Trauma to the ossicular chain is a common complication of fracture temporal bone, ossicular dislocation being more common than ossicular fracture. Most commonly affected ossicles are the incus and malleus, stapes being relatively more stable. The most common injury is the incudostapedial joint dislocation. We are presenting a case of unilateral conductive hearing loss in a patient with the pre operative diagnosis of otosclerosis, which intra-operative turned out to be incudostapedial joint dislocation with malleus fixation, successfully reconstructed with partial titanium implant.</p
... These fractures follow the path of least resistance, which often involves aerated regions, foramina, and suture lines. Longitudinal fractures most frequently traverse at some point through the middle ear [7]. The most common course of the fracture is anterior and extra-labyrinthine; however, although rare, intra-labyrinthine extension is possible. ...
... Most of these fractures are unilateral, bilateral fractures are reported in 9% to 20%. 1 Most temporal bone fractures result from highenergy blunt head trauma, and are frequently related to other skull fractures or to polytrauma. A multidisciplinary evaluation is generally required, including otolaryngology, radiology and neurosurgery. ...
... 3 In the adult population, approximately 90% of temporal bone fractures are associated with concurrent intracranial injuries and 9% with cervical spine injuries. 1 Most of these fractures are unilateral, with bilateral fractures reported in 9% to 20%. Children account for 8-22% of patients with temporal bone fractures. ...
p>Bilateral temporal bone fractures are rare; accounting for 9% to 20% of cases of temporal bone fractures. Clinical manifestations include hearing loss, facial paralysis, CSF otorhinorrhea and dizziness. This is a case report of a patient who presented with bilateral temporal bone fractures. This is a report of a 23-yr-old male who sustained bilateral temporal bone fractures and presented 18 days later with complaints of watery discharge from left ear and nose, bilateral profound hearing loss and facial weakness on the right side. Pure tone audiometry revealed bilateral profound sensori-neural hearing loss. CT temporal bones & MRI scans of brain were done to assess the extent of injuries. The patient underwent left CSF otorrhea repair, as the CSF leak was active and not responding to conservative management. One week later, the patient underwent right facial nerve decompression. The patient could not afford a cochlear implant (CI) in the right ear at the same sitting, however, implantation was advised as soon as possible because of the risk of cochlear ossification. The transcochlear approach was used to seal the CSF leak from the oval and round windows on the left side. The facial nerve was decompressed on the right side. The House-Brackmann grade improved from Grade V to grade III at last follow-up. Patients with bilateral temporal bone fractures require prompt assessment and management to decrease the risk of complications such as meningitis, permanent facial paralysis or hearing loss. </p
O presente trabalho tem como objetivo relatar um caso clínico de uma paciente que procurou o atendimento médico otorrinolaringológico no Hospital de Otorrino em Cuiabá – MT, depois de um trauma craniano que apresentou como sintoma a paralisia facial. Visamos apresentar, também, como se deu a realização do tratamento, que incluiu exames de anamnese, exames físicos da orofaringe e das cavidades nasal e ouvidos. Ao final, foi possível evidenciar o sucesso adquirido por meio da paciente através do modelo de tratamento proposto, sendo realizado cirurgia para descompressão do nervo facial.
