Isolated tympanic plate fracture and associated temporomandibular joint symptoms

Bavia, Paula Furlan; Keith, David A.

doi:10.1016/j.adaj.2019.05.006

Cited by 3 publications

(6 citation statements)

References 17 publications

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“…TBFs are uncommon complications of head trauma [1][2][3]. In the rather scarce scientific literature on this topic, the most reported mechanism is high-energy mandibular trauma (with impact to the chin), during which the mandibular head is retropulsed into the glenoid fossa of the TMJ strongly enough to overpass the resistance of tendons, ligaments, and cartilage, resulting in impaction and fracture of the tympanal bone [2,5,8,[10][11][12]15]. TBFs are usually associated with mandibular fractures (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…It consists of squamous, mastoid, petrous, and tympanal parts. The latter is a thin bone forming the floor and the anterior and posterior walls of the EAC [ 8 , 13 ]. The tympanal bone is anatomically located right behind the temporomandibular joint (TMJ), where the mandibular condyles articulate with the temporal bone.…”

Section: Discussionmentioning

confidence: 99%

“…However, the evaluation of this tiny bone requires special attention from the clinical radiologist, as well as the forensic practitioner, and its visualization should not be forgotten. As a matter of fact, TBF can lead to chronic complications of importance in both the clinical and judiciary fields, notably EAC stenosis [ 1 , 2 , 5 , 11 , 12 ] with conductive hearing loss [ 8 , 11 ] and subsequent loss of income for the victim. Furthermore, TBF rarely causes cholesteatoma formation [ 11 , 14 ], which may require surgical treatment.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Tympanal bone fracture (TBF) is an uncommon complication of blunt head trauma and is mostly associated with a mandibular or petrous bone fracture [1][2][3][4][5][6][7][8][9][10]. It can lead to several complications, including external auditory canal (EAC) stenosis [2,5,11,12] with conductive hearing loss [8,11]. For this reason, it deserves proper medical follow-up and the attention of the forensic pathologist due to the risk of long-term disability and loss of income.…”

Section: Introductionmentioning

confidence: 99%

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Tympanal bone fracture in forensic practice

Lövblad

Fracasso

2021

Int J Legal Med

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A tympanal bone fracture is an uncommon complication of head trauma and is mostly associated with a mandibular or petrous bone fracture. Upon reviewing the medicolegal literature, we could not find any publications on this topic. Tympanal bone fracture may lead to chronic complications (including external auditory canal stenosis and conductive hearing loss), with an important impact in both the medical and judiciary fields (e.g., chronic disabilities with loss of income). We decided to investigate the prevalence and mechanisms of tympanal bone fractures by means of a retrospective observational study on living victims who underwent head computed tomography after blunt head trauma and clinical forensic investigation at our center. We selected 159 cases of living victims with blunt head trauma (following an assault, traffic accident, or work accident) between January 2016 and December 2020. Re-examination of head imaging revealed 12 cases of tympanal bone fracture. Seven individuals showed cranial fractures involving the petrous bone (on the same side as the tympanal bone fracture). Three individuals had a temporomandibular fracture after a fall with chin impact. Only two victims exhibited an isolated tympanal bone fracture.

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