scholarly journals Rhomboid fossa

2019 ◽  
Author(s):  
Grace Carpenter ◽  
Roland Warner
Keyword(s):  
Rhomboid Fossa

Rhomboid fossa or inflammation?

1978 ◽  
Vol 138 (4) ◽  
pp. 658-659
Author(s):  
K. W. Lewin
Keyword(s):  
Rhomboid Fossa

Endoscopic opening of the foramen of Magendie using transaqueductal navigation for membrane obstruction of the fourth ventricle outlets

2006 ◽  
Vol 105 (6) ◽  
pp. 924-927 ◽  
Author(s):  
Pierluigi Longatti ◽  
Alessandro Fiorindi ◽  
Alberto Feletti ◽  
Vittorio Baratto
Keyword(s):  
Posterior Fossa ◽  
Fourth Ventricle ◽  
Endoscopic Third Ventriculostomy ◽  
Clinical Symptoms ◽  
Therapeutic Option ◽  
Surgical Approaches ◽  
Third Ventriculostomy ◽  
Prepontine Cistern ◽  
Suboccipital Craniectomy ◽  
Rhomboid Fossa

✓A membrane obstruction of the foramina of Magendie and Luschka is an uncommon origin of hydrocephalus characterized by unusual clinical symptoms of rhomboid fossa hypertension. Various surgical approaches have been proposed to alleviate this obstruction, including opening the obstructed foramen of Magendie using suboccipital craniectomy, shunting procedures, and more recently, endoscopic third ventriculostomy (ETV). In some cases, however, reshaping of the posterior fossa due to the collapse of the prepontine cistern could make ETV difficult for the surgeon and dangerous to the patient. In these cases, endoscopic opening of the foramen of Magendie by transaqueductal navigation of the fourth ventricle is a suitable and feasible therapeutic option.

Intraoperative identification of motor areas of the rhomboid fossa using direct stimulation

1993 ◽  
Vol 79 (3) ◽  
pp. 393-399 ◽  
Author(s):  
Christian Strauss ◽  
Johann Romstöck ◽  
Christopher Nimsky ◽  
Rudolf Fahlbusch
Keyword(s):  
Brain Stem ◽  
Fourth Ventricle ◽  
Complete Removal ◽  
Direct Stimulation ◽  
Content Type ◽  
Rhomboid Fossa ◽  
Stem Lesions ◽  
Mass Lesions ◽  
The Brain ◽  
Motor Areas

✓ Intraoperative electrical identification of motor areas within the floor of the fourth ventricle was successfully carried out in a series of 10 patients with intrinsic pontine lesions and lesions infiltrating the brain stem. Direct electrical stimulation was used to identify the facial colliculus and the hypoglossal triangle before the brain stem was entered. Multichannel electromyographic recordings documented selective stimulation effects. The surgical approach to the brain stem was varied according to the electrical localization of these structures. During removal of the lesion, functional integrity was monitored by intermittent stimulation. In lesions infiltrating the floor of the fourth ventricle, stimulation facilitated complete removal. Permanent postoperative morbidity of facial or hypoglossal nerve dysfunction was not observed. Mapping of the floor of the fourth ventricle identifies important surface structures and offers a safe corridor through intact nervous structures during surgery of brain-stem lesions. Reliable identification is particularly important in mass lesions with displacement of normal topographical anatomy.

scholarly journals Incidence of Clavicular Rhomboid Fossa in Northeastern Thais: An Anthropological Study

2016 ◽  
Vol 2016 ◽  
pp. 1-4 ◽  
Author(s):  
Ailadda Kaewma ◽  
Apichakan Sampannang ◽  
Panya Tuamsuk ◽  
Jaturat Kanpittaya ◽  
Sitthichai Iamsaard
Keyword(s):  
Basic Knowledge ◽  
Forensic Sciences ◽  
Inferior Surface ◽  
Elevated Type ◽  
Anthropological Study ◽  
Flat Type ◽  
Rhomboid Fossa ◽  
Type 3

The rhomboid fossa of clavicle is used to determine the age and sex in anthropology and forensic sciences. The variant types of rhomboid fossa on inferior surface have been reported in many races except in Thais. This study therefore was aimed at classifying the types of the rhomboid fossa in Northeastern Thais. The identified 476 Northeastern Thais dried clavicles (270 males and 206 females) were observed and recorded for the types of rhomboid fossa. The results showed that Thai-rhomboid fossa could be classified into 4 types: Type 1: smooth; Type 2: flat; Type 3: elevated; and Type 4: depressed, respectively. The incidences of rhomboid fossa were as follows: Type 1: 0.21%; Type 2: 19.75%; Type 3: 76.26%; and Type 4: 3.78%, respectively. Additionally, it was found that the percentage of Type 4 (11.84%) was much greater than that of female (1.94%) compared to other types. This incidence of rhomboid fossa types especially Type 4 may be a basic knowledge to be used in sex identification. The high incidence of rhomboid fossa in both sexes of Northeastern Thai clavicles was Type 3 (elevated type).

scholarly journals Rhomboid fossa and mid shaft circumference of the clavicle - anthropological study in North Karnataka population

2015 ◽  
Vol 05 (03) ◽  
pp. 047-051
Author(s):  
Shivarama Bhat ◽  
Muhammad Asif ◽  
Dinesh Sosalagere Manjegowda ◽  
Shetty Radhakrishna ◽  
Shivarama C. H.
Keyword(s):  
Sexual Dimorphism ◽  
Forensic Science ◽  
South India ◽  
Clinical Importance ◽  
Relative Degree ◽  
Male And Female ◽  
Anthropological Study ◽  
Molecular Studies ◽  
Rhomboid Fossa ◽  
Age And Sex

AbstractThe rhomboid fossa of clavicle was studied globally by forensic experts and anthropologists to determine the age and sex. This study was done on samples of human clavicles from North Karnataka of South India to determine the sexual dimorphism which is of anthropological, forensic and clinical importance. In this study mid shaft circumference, morphology of rhomboid fossa of clavicle was analysed. The incidences of rhomboid fossa of depressed and elevated types are seen more in males and smooth and flat types are seen mainly in female clavicles. This study also showed relative degree of sexual dimorphism in the mid shaft circumference of male and female clavicles. Since morphology of rhomboid fossa and mid shaft circumference of clavicles are significantly associated with sex, these results can be correlated with further molecular studies. These results may be used as indicators to determine sex in anthropology and forensic science to aid identification of isolated bone specimens.

Pericollicular surgical approaches to the rhomboid fossa. Part I. Anatomical basis

1997 ◽  
Vol 87 (6) ◽  
pp. 893-899 ◽  
Author(s):  
Christian Strauss ◽  
Elke Lütjen-Drecoll ◽  
Rudolf Fahlbusch
Keyword(s):  
Surgical Approaches ◽  
Detailed Knowledge ◽  
Lower Cranial Nerve ◽  
Content Type ◽  
Anatomical Basis ◽  
Nervus Facialis ◽  
Rectangular Area ◽  
Rhomboid Fossa ◽  
Oculomotor Nuclei ◽  
Functional Morbidity

✓ A safe paramedian approach to the rhomboid fossa for surgical treatment of intrinsic brainstem lesions is based on detailed knowledge of the morphometric anatomy of superficially located motor structures. The morphometry of the rhomboid fossa is described in this report on the basis of histological studies conducted in six human brainstem specimens, with special emphasis on the colliculus facialis and the trigona nervi hypoglossi and vagi. Morphometric data include analysis of shrinkage factors in each specimen. The colliculus is a landmark for the nervus facialis, oculomotor nuclei, and the paramedian pontine reticular formation. In the surgeon's view from the posterior approach, the colliculus covers an area of 5.7 mm in the mediolateral and 6.8 mm in the craniocaudal direction and is located 0.6 mm lateral to the median sulcus. The fibers of the nervus facialis come as close as 0.2 mm to the surface of the fourth ventricle. The colliculus is located 15.7 mm above the obex. The trigona nervi hypoglossi and vagi cover a rectangular area measuring 3.1 by 6.5 mm and serve as a landmark for lower cranial nerve nuclei. These nuclei are located 0.3 mm lateral to the midline. An area with a maximum extension of 0.9 cm between the colliculus and trigona can be used for an infracollicular paramedian approach. The same applies to a supracollicular approach cranial to the colliculus and caudal to the fibers of the nervus trochlearis within the medullary velum, with a craniocaudal extension of 4 mm. Superficial motor nuclei and fibers can be identified by neurophysiological mapping, which helps to define safe surgical corridors into the rhomboid fossa, thus reducing functional morbidity caused by the operative approach in intrinsic pontine and pontomedullary lesions.

Concave impressio ligamenti costoclavicularis (“rhomboid fossa”) and its prevalence and relevance to clinical practice

2014 ◽  
Vol 37 (3) ◽  
pp. 239-245 ◽  
Author(s):  
Karel Koudela ◽  
Jana Koudelová ◽  
Karel Koudela ◽  
Petr Zeman
Keyword(s):  
Clinical Practice ◽  
Rhomboid Fossa

scholarly journals Endoscopic Assistance in the Deep and Narrow Spaces of the Brain—Microscopic Tumor Surgery Supported by the New Micro-Inspection Tool QEVO® (Technical Note)

2021 ◽  
Vol 8 ◽  
Author(s):  
Karl-Michael Schebesch ◽  
Christian Doenitz ◽  
Julius Höhne ◽  
Amer Haj ◽  
Nils Ole Schmidt
Keyword(s):  
Time Frame ◽  
Foramen Magnum ◽  
Technical Note ◽  
Intracranial Lesions ◽  
Endoscopic Assistance ◽  
Surgical Field ◽  
Rhomboid Fossa ◽  
The Brain ◽  
Anatomical Area ◽  
Endoscopic Device

Introduction: To evaluate the feasibility and efficacy of the innovative micro-inspection tool QEVO® (Carl Zeiss Meditec, Oberkochen, Germany) as an endoscopic adjunct to microscopes for better visualization of the surgical field in complex deep-seated intracranial tumors in infants and adults.Materials and Methods: We retrospectively assessed the surgical videos of 25 consecutive patients with 26 complex intracranial lesions (time frame 2018–2020). Lesions were classified according to their anatomical area: 1 = sellar region (n = 6), 2 = intra-ventricular (except IV.ventricle, n = 9), 3 = IV.ventricle and rhomboid fossa (n = 4), and 4 = cerebellopontine angle (CPA) and foramen magnum (n = 7). Indications to use the QEVO® tool were divided into five “QEVO® categories”: A = target localization, B = tailoring of the approach, C = looking beyond the lesion, D = resection control, and E = inspection of remote areas.Results: Overall, the most frequent indications for using the QEVO® tool were categories D (n = 19), C (n = 17), and E (n = 16). QEVO® categories B (n = 8) and A (n = 5) were mainly applied to intra-ventricular procedures (anatomical area 2).Discussion: The new micro-inspection tool QEVO® is a powerful endoscopic device to support the comprehensive visualization of complex intracranial lesions and thus instantly increases intraoperative morphological understanding. However, its use is restricted to the specific properties of the respective anatomical area.

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