Morphometric Study of Pterion and Its Clinical Significance

Nayak, Gyanaranjan; Mohanty, Bishnupad; Das, Sudipta Sekhar

doi:10.22159/ajpcr.2017.v10i10.19138

Cited by 13 publications

(8 citation statements)

References 8 publications

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“…This approach has more advantages than the traditional surgical approach with minor tissue damage, less brain retraction, a superior cosmetic results and a shorter duration of surgery ( 6 ). Fundamentally, the knowledge of the pterion sutural patterns and its relationship to the bony landmarks is useful for specialist in various field of medical professions particularly for neurosurgeons ( 17 , 18 ). The main findings of this study are notably the higher occurrence of the sphenoparietal type of pterion with the absence of frontotemporal type.…”

Section: Discussionmentioning

confidence: 99%

Positions and Types of Pterion in Adult Human Skulls: A Preliminary Study

Muche

2021

Ethiop J Health Sci

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BACKGROUND፡ A trauma to the skull in the area of the pterion usually causes rupture of the middle meningeal artery leading to life- threatening epidural hematoma. The objective of the study is to assess the prevalence of different types of pterion and to determine its location using valuable bony landmarks.METHODS: On 90 dry adult human skulls of unknown sex, age and nationality the distance of different landmarks from pterion was measured using stainless steel sliding Vernier caliper. The data were analyzed using SPSS version-20 and an independent ttest analysis was implemented. A value of P< 0.05 was considered as statistically significant.Results: A higher occurrence of sphenoparietal type of pterion with the absence of frontotemporal type was noted. About 23% and 77% of the suture types are found to be unilateral and bilateral, respectively. There was a statistically significant difference between right and left sides of the skull in distances from the center of pterion to frontozygomatic suture, root of zygomatic arch, inion and in central thickness pterion.CONCLUSION: This study showed that the most prevalent type of pterion is sphenoparietal, and revealed asymmetry in the distances from center of pterion to frontozygomatic suture, root of zygomatic arch and inion, and its central thickness. Such findings could offer worthy information about the type and location of pterion, which could be relevant to anatomists, neurosurgeons, forensic medicine specialist and anthropologists.

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Section: Discussionmentioning

confidence: 99%

Positions and Types of Pterion in Adult Human Skulls: A Preliminary Study

Muche

2021

Ethiop J Health Sci

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“…In the current study, epipterical type was the least observed type (Type C). In order to locate the pterion, different landmarks have been described in the literature, such as arcus zygomaticus or frontozygomatic suture (2,7). In the present study, palpable landmarks under the surface of the skin without any further skin incision were chosen to locate the pterion, such as tuberculum marginale and processus mastoideus.…”

Section: Discussionmentioning

confidence: 99%

Inner Surface of Pterion in Terms of Surgical Approaches: An Anatomical Cadaveric Study

Develı¹,

Mehtiyev²

2020

Bezmialem Science

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Amaç: Bu çalışmanın amacı pterionun morfometrik özelliklerini ve pterionun iç yüzeyini, komşu anatomik yapılar için yapılan cerrahi prosedürler açısından değerlendirmektir. Yöntemler: Çalışmaya, iskelet gelişimi tamamlamış 35 kafatası dahil edildi. Kafataslarından 15'i kadavralara aitti, 20 tanesi kuru kemik idi. Tüm örnekler anatomi anabilim dalından alınmıştır. Pterion tipi ve pterionun orta noktasının palpabl yüzey işaret noktalarına olan uzaklığı kaydedildi. Pterionun iç yüzeyi, bir lazer işaretçinin translüminasyonu ile işaretlenmiştir. Pterionun önemli anatomik yapılarla örtüşmesi ve onlara olan en yakın mesafesi değerlendirildi. Bulgular: Pterionun en yaygın görülen tipi sphenoparietal tip (%80), en az gözlemlenen tipi epipterik tip pterion (%1,4) idi. Kalvaria'nın pterion üzerindeki ortalama kalınlığı 4,2±0,16 mm olarak ölçüldü. Pterion, arcus zygomaticus'un orta noktasına göre yaklaşık 4 cm üstte ve 2,5 cm önde; tuberculum marginale'ye göre 3 cm üstte ve 1,5 cm arkada, processus mastoideus'a göre 7 cm üstte ve 6,5 cm önde yer alıyor olarak bulunmuştur. Örneklerin %61,4'ünde (n=43) pterionun iç yüzeyi a. meningea media'nın oluğu ile ilişkili bulunmuştur. Örneklerin %81,4'ünde (n=57) ise sinüs sphenoparietalis ile çakışmaktaydı. Foramen spinosum posteroinferior yerleşimde ve ortalama en yakın mesafesi 39,8±6,53 mm idi. Meckel oluğu posteromedial yerleşimde ve ortalama en yakın mesafe 40,6±3,18 mm idi. Sonuç: Sinüs sphenoparietalis ve a. meingea media'nın frontal dalı, pterionun iç yüzeyi ile çakışan başlıca anatomik yapılardır. Objective: Aim of this study was to evaluate the morphometric features and the inner surface of the pterion in terms of surgical procedures for neighboring anatomical structures. Methods: Thirty five skeletally mature craniums were included in the present study. Fifteen of the craniums were belonged to cadavers, 20 of the craniums were dry bones. All specimens were obtained from the department of anatomy. Type of pterion and distance of midpoint of pterion to palpable surface landmarks were noted. Inner surface of pterion was marked by translumination of a laser pointer. Overlap of pterion with important anatomical structures and its closest distance to them was evaluated. Results: The most common type of pterion was sphenoparietaltype (80%) and the least common type was epipterical (1.4%) type. The mean thickness of the calvaria on the pterion was 4.2±016 mm. Pterion is located approximately 4 cm superior and 2.5 cm anterior to midpoint of arcus zygomaticus; 3 cm superior and 1.5 cm posterior to tuberculum marginale; 7 cm superior and 6.5 cm anterior to the tip of processus mastoideus. In 61.4% (n=43) of samples, inner surface of pterion was found to be associated with groove of a. meningea media. In 81.4% (n=57) of specimens, inner projection was coincided with sinus sphenoparietalis. Foramen spinosum was located posteroinferior to inner projection and the mean closest distance was 39.8±6.53 mm. Meckel cave was located posteromedial to inner projection and the mean closest distanc...

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“…The problem in developing these systems is really to maintain the release of the drug and moreover extending the residence of dosage forms in the stomach till the drug is completely delivered at the required time [3]. Extended stomach residency improves bioavailability while prolonging the drug release and reducing drug wasting [4,5]. Extended stomach residency of dosage forms has pharmacokinetic benefits, such as the stability of therapeutic levels throughout a long time subsequently, a decrease in therapeutic level fluctuations.…”

Section: Introductionmentioning

confidence: 99%

Formulation and Assessment of Celecoxib Floating Beads in Capsule using 2^3 Full Factorial Design

Reda

Mohamed

El-Gindy

et al. 2022

Journal of advanced Biomedical and Pharmaceutical Sciences

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Floating beads have been formed to create a prolonged drug release in the stomach and to reduce the number of frequencies, thereby overcoming its side effects. The current study is concerned with the design and evaluation of stomach-specific oil embedded floating beads of celecoxib in a capsule. Hard gelatin capsules (size 1) were filled with celecoxib oil entrapped beads. A 2³ factorial design was used to investigate the effects of different weight masses of HPMC K4M, Sodium alginate, and maize starch on drug encapsulation efficiency (EE) of beads and percent of cumulative drug release at 6 hours (R6h) from capsules. The optimization results show an increase in EE in the oil entrapped beads and a decrease in R6h from capsules with increases in the weights of HPMC K4M, Sodium alginate, and maize starch. The optimized formulation (F6) had EE of 91.80±0.20% and R6h of 37.88±1.39%. The capsules floated over 6 h and released the drug in gastric pH (1.2) during the first two hours then in phosphate buffer pH (6.8) for another four hours. An X-ray imaging in vivo study of optimised capsules containing CXB oil embedded floating beads in rabbits indicated stomachspecific gastro retention throughout a long time. An in vivo anti-inflammatory efficacy of optimized CXB floating beads showed sustained drug release and better inhibition of rats' hind paw edema.

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Morphometric Study of Pterion and Its Clinical Significance

Cited by 13 publications

References 8 publications

Positions and Types of Pterion in Adult Human Skulls: A Preliminary Study

Positions and Types of Pterion in Adult Human Skulls: A Preliminary Study

Inner Surface of Pterion in Terms of Surgical Approaches: An Anatomical Cadaveric Study

Formulation and Assessment of Celecoxib Floating Beads in Capsule using 2^3 Full Factorial Design

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