scholarly journals Histological Characteristics of Ligaments between Middle Ear and Temporomandibular Joint

2009 ◽  
Vol 03 (04) ◽  
pp. 280-284 ◽  
Author(s):  
Metin Sencimen ◽  
Altan Varol ◽  
Baris Baykal ◽  
Hasan Ayberk Altug ◽  
Necdet Dogan ◽  
...  
Keyword(s):  
Temporomandibular Joint ◽  
Middle Ear ◽  
Structural Characteristics ◽  
Middle Cranial Fossa ◽  
Elastic Fibers ◽  
Compensatory Mechanism ◽  
Functional Tests ◽  
Histological Characteristics ◽  
Cranial Fossa

ABSTRACTObjectives: To examine histological aspects of the ligaments between the middle ear and temporomandibular joint and suppose a theoretical role of their structural characteristics on mobility of mallear ossicle.Methods: The ligaments were obtained by microdissection of middle cranial fossa on both sites of 15 cadavers fixed in formalin solution and were sectioned longitudinally (7-10 µm thickness). The sections were stained with Verhoff’s Van Gieson’s stain (VVG) for demonstration of elastic fibers and visualized at X2.5 and X10 magnifications under light microscopy.Results: Anterior mallear ligament (AML) and sphenomandibular ligaments (SML) were consisted of collagen fibres in analyzed specimens. The discomallear ligament (DML) was constituted of rich collagenous fibres. One specimen of DML harvested between petrotympanic fissure and retrodiscal-capsular intersection site contained elastic fibers dispersed in cotton-bowl appearance between collagen fibers. In the light of functional tests performed in previous studies, it could be extrapolated that presence of elastic fibers in the DML may prevent excessive forces conducted to mallear head by elongation of elastic fibers.Conclusions: Collagenous fibres have no ability to stretch along their axis which may lack compensatory mechanism to prevent mallear head mobility. (Eur J Dent 2009;3:280-284)

Bony eminence on the middle cranial fossa corresponding to the temporomandibular joint

2007 ◽  
Vol 20 (5) ◽  
pp. 512-515 ◽  
Author(s):  
Atsunobu Tsunoda ◽  
Takuro Sumi ◽  
Satoshi Shirakura ◽  
Seiji Kishimoto ◽  
Keiichi Akita
Keyword(s):  
Temporomandibular Joint ◽  
Middle Cranial Fossa ◽  
Cranial Fossa

Hearing preservation despite labyrinthectomy for resection of giant cholesteatoma with middle fossa extension

1998 ◽  
Vol 112 (5) ◽  
pp. 472-475 ◽  
Author(s):  
F. Rapado ◽  
N. Fergie ◽  
R. T. Ramsden
Keyword(s):  
Middle Ear ◽  
Bone Conduction ◽  
Mass Effect ◽  
Hearing Preservation ◽  
Middle Cranial Fossa ◽  
Middle Fossa ◽  
Bone Conduction Threshold ◽  
Acquired Cholesteatoma ◽  
Cranial Fossa ◽  
Middle Ear Cleft

AbstractA case is described of an extensive acquired cholesteatoma of the middle ear cleft which had invaded the middle cranial fossa and produced a mass effect on the temporal lobe. It had also extended into the labyrinth without causing elevation in the bone conduction threshold. Furthermore, even after total bony labyrinthectomy, there was very little elevation in these thresholds. The literature relating to hearing preservation after labyrinthectomy is reviewed.

Endoscopic treatment of middle cranial fossa arachnoid cysts in children

2012 ◽  
Vol 9 (3) ◽  
pp. 231-238 ◽  
Author(s):  
Nasser M. F. El-Ghandour
Keyword(s):  
Middle Cranial Fossa ◽  
Arachnoid Cysts ◽  
Cyst Size ◽  
Intraoperative Bleeding ◽  
Initial Surgery ◽  
Significant Clinical Improvement ◽  
Recovery Times ◽  
Cranial Fossa

Object Arachnoid cysts located in the middle cranial fossa are common, comprising about half of all intracranial arachnoid cysts. The management of these cysts is challenging, and the optimal surgical treatment is controversial. This study evaluates the role of endoscopy in the treatment of middle cranial fossa arachnoid cysts (MCFACs) in children, focusing on some factors or technical aspects that might influence the outcome. Methods Thirty-two children with symptomatic MCFACs were the subject of this study. The group included 23 boys and 9 girls, with a mean age of 3.6 years. All patients underwent operations using a purely endoscopic cystocisternostomy procedure through a transtemporal approach. Results Significant clinical improvement occurred in 28 cases (87.5%). Postoperative MR imaging showed a reduction in cyst size in 23 cases (71.9%), whereas in the remaining 9 cases (28.1%), the cyst size was unchanged. Minor intraoperative bleeding occurred in 3 cases (9.4%), which stopped spontaneously without any postoperative sequelae. Ipsilateral subdural hygroma occurred in 2 cases (6.3%) and resolved within a few weeks without surgery; transient oculomotor palsy occurred in 1 case (3.1%). During follow-up (mean 4.6 years), 3 patients (9.4%) experienced recurrence of symptoms and an increase in cyst size. Interestingly, all 3 patients who had recurrence had also experienced intraoperative bleeding at initial surgery. At a second endoscopic procedure, the fenestration was found to be closed in all 3 patients. Conclusions Endoscopic cystocisternostomy is recommended in the treatment of MCFACs in children because it is simple, minimally invasive, and effective. It maintains the basic strategy of cyst fenestration into the basal cisterns without the invasiveness of open craniotomy. This procedure reduces operative and recovery times and is associated with low morbidity and mortality rates.

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