Assessing the reliability of zygomatic bone landmarks as guides to reach the inferior orbital fissure in orbitozygomatic osteotomy: anatomical study of 83 human skulls

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

10.21203/rs.3.rs-890328/v1 ◽

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.

Download Full-text

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

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2020.v13i4.36782 ◽

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.

Download Full-text

Anatomical Study of Pterygospinous and Pterygoalar Bar in Human Skulls with their Phylogeny and Clinical Significance

JOURNAL FOR CLINICAL AND DIAGNOSTIC RESEARCH ◽

10.7860/jcdr/2014/9326.4888 ◽

2014 ◽

Cited By ~ 1

Author(s):

Kavitha Kamath. B

Keyword(s):

Clinical Significance ◽

Anatomical Study ◽

Human Skulls

Download Full-text

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

The FASEB Journal ◽

10.1096/fasebj.26.1_supplement.lb6 ◽

2012 ◽

Vol 26 (S1) ◽

Author(s):

Chelsea Jin ◽

David Fealey ◽

April Pruski ◽

Cigdem Erkuran-Yilmaz

Keyword(s):

Anatomical Study ◽

Mandibular Bone ◽

Human Skulls

Download Full-text

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

Siriraj Medical Journal ◽

10.33192/smj.2021.95 ◽

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.

Download Full-text