scholarly journals An anatomical study of mandibular bone: measurements and surgical relevance of mandibular and mental foramina in human skulls

2012 ◽  
Vol 26 (S1) ◽  
Author(s):  
Chelsea Jin ◽  
David Fealey ◽  
April Pruski ◽  
Cigdem Erkuran-Yilmaz
Keyword(s):  
Anatomical Study ◽  
Mandibular Bone ◽  
Human Skulls

scholarly journals POST-GLENOID FORAMEN: A RARE EMISSARY FORAMEN IN HUMAN SKULL

2020 ◽  
pp. 42-43
Author(s):  
PRIYA G ◽  
YASODAI R
Keyword(s):  
Pathological Condition ◽  
Anatomical Study ◽  
Venous Drainage ◽  
Rare Occurrence ◽  
Human Skull ◽  
Inner Ear Malformation ◽  
Mandibular Fossa ◽  
Emissary Veins ◽  
Human Skulls ◽  
Temporal Bones

Objective: The aim of the present study was to determine the presence of post-glenoid foramen in human skulls. Methods: The study was carried out in 100 adult dry human skulls with 200 temporal bones on each side (right and left) which were collected from the Department of Anatomy at RVS Dental College and Hospital, Coimbatore. The selected skulls were placed on a flat table and the considerable foramen was visually identified by two investigators. The foramen was examined by a probing method to find out its patency. Results: Of 100 skulls (200 temporal bones), only one skull showed a unilateral post-glenoid foramen on the mandibular fossa of the left side temporal bone (2% of 200). Conclusion: The emissary veins are considered as an important encephalic venous drainage that connects the intracranial and extracranial venous pathway through emissary foramen. If there is little variation, and rare occurrence of the emissary foramen may cause serious pathological condition. Thereby, the present study highlights one of the rare emissary foramen, the post-glenoid foramen. This anatomical study of post-glenoid foramen may help the surgeons while operating temporomandibular joint and inner ear malformation to avoid the risk of accidental bleeding during surgery.

scholarly journals Assessing The Reliability of Zygomatic Bone Landmarks as Guides to Reach The Inferior Orbital Fissure in Orbitozygomatic Osteotomy. Anatomical Study Of 83 Human Skulls.

2021 ◽  
Author(s):  
Semyon A Melchenko ◽  
Vasiliy A Cherekaev ◽  
Olga Yu Aleshkina ◽  
Gleb V Danilov ◽  
Gerald Musa ◽  
...  
Keyword(s):  
Anatomical Study ◽  
The Body ◽  
Zygomatic Bone ◽  
Human Skulls ◽  
The Right ◽  
The Relationship ◽  
Inferior Orbital Fissure

Abstract ObjectivesTo perform an adequate orbito-zygomatic craniotomy, it is very important that the bone cut which passes through the body of the zygoma reaches the inferior orbital fissure (IOF). To reach the IOF, two surface landmarks on the body of the zygoma are described: a point located directly superior to the malar eminence and the zygomaticofacial foramen. The article explores the reliability of these landmarks and three other alternative points to reach the IOF.Method Eighty-three adult skulls were used in this study. The IOF dimensions and the relationship with the malar eminence, the point superior to the malar eminence, the zygomaticofacial foramen and 3 alternative points (E, C, F) were analyzed.Results. The malar eminence was unacceptable for use as a guide to the IOF. The point superior to the malar eminence was also unacceptable as a guide as only 9.4% and 10.9% were in the projection of the IOF on the right and left, respectively. 59.7% of the total zygomaticofacial foramina fell in the IOF projection. The point F fell in the projection of the IOF in 98.8% and 100.0% on the right and left, respectively. Conclusion. The use of the malar eminence as a guide to reach the IOF is unreliable in one third of cases as it is not easily identified intraoperatively in these cases. The zygomaticofacial foramen cannot be considered a reliable surgical landmark to reach the IOF. The authors recommend using the point “F” which is reliable in 98.8-100% of cases.

scholarly journals Temporal Bone Landmarks of the Transversesigmoid Sinus Junction: An Anatomical Study in Dried Human Skulls

2021 ◽  
Vol 73 (11) ◽  
pp. 738-743
Author(s):  
Thanawan Supawannawiwat ◽  
Chottiwat Tansirisithikul ◽  
Bunpot Sitthinamsuwan
Keyword(s):  
Temporal Bone ◽  
Anatomical Study ◽  
Intersection Point ◽  
Low Risk ◽  
Venous Sinus ◽  
Burr Hole ◽  
Bony Landmark ◽  
Inner Surface ◽  
Anatomical Relationship ◽  
Human Skulls

Objective: To investigate the accuracy in localization of the anterosuperior margin of TSSJ by using the intersection point between the squamosal and parietomastoid sutures (A point) and the intersection of the squamosal suture and supramastoid crest (B point) as bony landmarks.Materials and Methods: The A and B points were marked on the inner surface of a skull by using the transillumination technique. The anatomical relationship between the projected A point, B point, and groove of TSSJ was investigated in 60 dried Thai human skulls (120 sides).Results: Of the 120 sides, the projected A points were located exactly on the anterosuperior margin of the TSSJ in 38 (31.7%) instances and adjacent (above and below) the anterosuperior margin in 82 (68.3%) cases. Of the 118 sides with identifiable supramastoid crests, the projected B points were located precisely on the anterosuperior margin of TSSJ in 60 (50.8%) cases and above the anterosuperior margin of the TSSJ in 57 (48.3%) cases. Hence, the projected B point was a more reliable bony landmark for localizing the anterosuperior margin of the TSSJ when compared with the projected A point (p = 0.003, OR 2.2, and 95% CI =1.3-3.8).Conclusion: The B point is a more reliable temporal bone landmark for localization of the TSSJ than the A point. In temporal craniotomy, an initial burr hole at the B point is relatively safe and carries a very low risk of inadvertent venous sinus injury.

Location and incidence of the zygomatico-facial foramen in dry human skulls: An anatomical study

2016 ◽  
Vol 65 (2) ◽  
pp. 164-166
Author(s):  
Mangesh Lone ◽  
Anjali Telang ◽  
Lakshmi Rajgopal ◽  
Pritha S. Bhuiyan
Keyword(s):  
Anatomical Study ◽  
Human Skulls

Anatomical Study for the Trans-Oral Endoscopic Approach to the Dorsum Sellae and Posterior Clinoids

2014 ◽  
Vol 75 (S 01) ◽  
Author(s):  
Robert Engle ◽  
Mark Toma ◽  
Trace Barrett ◽  
Maria Peris-Celda ◽  
Tyler Kenning ◽  
...  
Keyword(s):  
Anatomical Study ◽  
Endoscopic Approach

Endoscopic Endonasal Anatomical Study of the Cavernous Sinus Segment of the Ophthalmic Nerve

2015 ◽  
Vol 76 (S 01) ◽  
Author(s):  
Ricardo Dolci ◽  
Ricardo Carrau ◽  
Lamia Buohliqah ◽  
Leo Filho ◽  
Mateo Zoli ◽  
...  
Keyword(s):  
Cavernous Sinus ◽  
Anatomical Study ◽  
Endoscopic Endonasal

Investigations on skeletal growth zones via bone scans as base of determination of optimal time for surgery in mandibular asymmetry

2000 ◽  
Vol 39 (05) ◽  
pp. 121-126 ◽  
Author(s):  
R. Werz ◽  
P. Reuland
Keyword(s):  
Bone Growth ◽  
Region Of Interest ◽  
Tracer Uptake ◽  
Optimal Time ◽  
Mandibular Bone ◽  
The Third ◽  
Mandibular Asymmetry ◽  
Bone Scans ◽  
Epiphyseal Plates

Summary Aim of the study was to find out wether there is a common stop of growth of mandibular bone, so that no individual determination of the optimal time for surgery in patients with asymmetric mandibular bone growth is needed. As there are no epiphyseal plates in the mandibular bone, stop of growth cannot be determined on X-ray films. Methods: Bone scans of 731 patients [687 patients (324 male, 363 female) under 39 y for exact determination of end of growth and 44 (21 male, 23 female) patients over 40 y for evaluation of nongrowth dependant differences in tracer uptake] were reviewed for the study. All the patients were examined 3 hours after injection of 99mTc-DPD. Tracer uptake was measured by region of interest technique in different points of the mandibular bone and in several epiphyseal plates of extremities. Results: Tracer uptake in different epiphyseal plates of the extremities shows strong variation with age and good correlation with reported data of bone growth and closure of the epiphyseal plates. The relative maximum of bone activity is smaller in mandibular bone than in epiphyseal plates, which show well defined peaks, ending at 15-18 years in females and at 18-21 years in males. In contrast, mandibular bone shows no well defined end of growing but a gradually reduction of bone activity which remains higher than bone activity in epiphyseal plates over several years. Conclusion: No well defined end of growth of mandibular bone exists. The optimal age for surgery of asymmetric mandibular bone growth is not before the middle of the third decade of life, bone scans performed earlier for determination of bone growth can be omitted. Bone scans performed at the middle of the third decade of life help to optimize the time of surgical intervention.

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