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      Morphological study on the skull sutures and their relationships to skull morphology in young camels ( Camelus dromedarius)

      research-article
      * ,
      Open Veterinary Journal
      Faculty of Veterinary Medicine
      Morphology, Skull, Sutures, Young camels

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          Abstract

          Objective:

          The sutures are associated with anatomical and physiological differences in skull camels. There is a deficiency in the information regarding the anatomy of dromedary camels, especially on fibrous joints (sutures) of the camels’ skull.

          Aim:

          The goal of this work was to give a detailed gross anatomical and radiographic description of the sutures in the camels’ skull. This description may be of great importance for veterinarians to differentiate between the suture and the fracture of the head in the radiographic photos.

          Methods:

          The current study was conducted on 10 skulls of the young (Howar) dromedary camel at 4–10 months old. The skulls were prepared by using the boiling and maceration techniques. The gross and radiographic photos of the sutures were taken using a digital camera and Siemens mobile full-wave X-ray machine (Siemens Medical Solutions, Erlangen, Germany).

          Results:

          The skull is made up of nineteen bones -6 single and 13 paired-the majority of which are joined by joints termed as sutures. The sutures of the camel skulls were viewed in dorsal, ventral, lateral-vertical, and inside directions. They were of four types which are the coronal, serrate, plane, and squamosal sutures in different positions of the skull.

          Conclusion:

          The current study showed that the fibrous joints of camel skulls (sutures) were similar to those of other domestic animals. This information is critical for supporting veterinarians to differentiate sutures from fractures that may have happened in the skull of the dromedary camel using radiological pictures.

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          Most cited references34

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          Sutural biology and the correlates of craniosynostosis.

          M M Cohen (1993)
          The purpose of this paper is to provide a new perspective on craniosynostosis by correlating what is known about sutural biology with the events of craniosynostosis per se. A number of key points emerge from this analysis: 1) Sutural initiation may take place by overlapping, which results in beveled sutures, or by end-to-end approximation, which produces nonbeveled, end-to-end sutures. All end-to-end sutures occur in the midline (e.g., sagittal and metopic) probably because embryonic biomechanical forces on either side of the initiating suture tend to be equal in magnitude. A correlate appears to be that only synostosed sutures of the midline have pronounced bony ridging. 2) Long-term histologic observations of the sutural life cycle call into question the number of layers within sutures. The structure varies not only in different sutures, but also within the same suture over time. 3) Few, if any, of the many elegant experimental research studies in the field of sutural biology have increased our understanding of craniosynostosis per se. An understanding of the pathogenesis of craniosynostosis requires a genetic animal model with primary craniosynostosis and molecular techniques to understand the gene defect. This may allow insight into pathogenetic mechanisms involved in primary craniosynostosis. It may prove to be quite heterogeneous at the basic level. 4) The relationship between suture closure, cessation of growth, and functional demands across sutures poses questions about various biological relationships. Two conclusions are provocative. First, cessation of growth does not necessarily, or always lead to fusion of sutures. Second, although patent sutures aid in the growth process, some growth can take place after suture closure. 5) In an affected suture, craniosynostosis usually begins at a single point and then spreads along the suture. This has been shown by serial sectioning and calls into question results of studies in which the affected sutures are only histologically sampled. 6) Craniosynostosis is etiologically and pathogenetically heterogeneous. Known human causes are reviewed. Is craniosynostosis simply normal suture closure commencing too early?(ABSTRACT TRUNCATED AT 400 WORDS)
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            Craniofacial sutures: morphology, growth, and in vivo masticatory strains.

            The growth and morphology of craniofacial sutures are thought to reflect their functional environment. However, little is known about in vivo sutural mechanics. The present study investigates the strains experienced by the internasal, nasofrontal, and anterior interfrontal sutures during masticatory activity in 4-6-month-old miniature swine (Sus scrofa). Measurements of the bony/fibrous arrangements and growth rates of these sutures were then examined in the context of their mechanical environment. Large tensile strains were measured in the interfrontal suture (1,036 microepsilon +/- 400 SD), whereas the posterior internasal suture was under moderate compression (-440 microepsilon +/- 238) and the nasofrontal suture experienced large compression (-1,583 microepsilon +/- 506). Sutural interdigitation was associated with compressive strain. The collagen fibers of the internasal and interfrontal sutures were clearly arranged to resist compression and tension, respectively, whereas those of the nasofrontal suture could not be readily characterized as either compression or tension resisting. The average linear rate of growth over a 1-week period at the nasofrontal suture (133.8 micrometer, +/- 50.9 S.D) was significantly greater than that of both the internasal and interfrontal sutures (39.2 micrometer +/- 11.4 and 65. 5 micrometer +/- 14.0, respectively). Histological observations suggest that the nasofrontal suture contains chondroid tissue, which may explain the unexpected combination of high compressive loading and rapid growth in this suture. Copyright 1999 Wiley-Liss, Inc.
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              Cranial sutures and bones: growth and fusion in relation to masticatory strain.

              Cranial bones and sutures are mechanically loaded during mastication. Their response to masticatory strain, however, is largely unknown, especially in the context of age change. Using strain gages, this study investigated masticatory strain in the posterior interfrontal and the anterior interparietal sutures and their adjacent bones in 3- and 7-month-old miniature swine (Sus scrofa). Double-fluorochrome labeling of these animals and an additional 5-month group was used to reveal suture and bone growth as well as features of suture morphology and fusion. With increasing age, the posterior interfrontal suture strain decreased in magnitude and changed in pattern from pure compression to both compression and tension, whereas the interparietal suture remained in tension and the magnitude increased unless the suture was fused. Morphologically, the posterior interfrontal suture was highly interdigitated at 3 months and then lost interdigitation ectocranially in older pigs, whereas the anterior interparietal suture remained butt-ended. Mineralization apposition rate (MAR) decreased with age in both sutures and was unrelated to strain. Bone mineralization was most vigorous on the ectocranial surface of the frontal and the parietal bones. Unlike the sutures, with age bone strain remained constant while bone MARs significantly increased and were correlated with bone thickness. Fusion had occurred in the interparietal suture of some pigs. In all cases fusion was ectocranial rather than endocranial. Fusion appeared to be associated with increased suture strain and enhanced bone growth on the ectocranial surface. Collectively, these results indicate that age is an important factor for strain and growth of the cranium. . Copyright 2004 Wiley-Liss, Inc.
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                Author and article information

                Journal
                Open Vet J
                Open Vet J
                Open Veterinary Journal
                Faculty of Veterinary Medicine (Tripoli, Libya )
                2226-4485
                2218-6050
                Sep-Oct 2022
                21 September 2022
                : 12
                : 5
                : 718-727
                Affiliations
                Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Saudi Arabia
                Author notes
                [* ] Corresponding Author: Gamal Mounir Allouch. College of Agriculture and Veterinary Medicine, Qassim University, Saudi Arabia. g.alloush@ 123456qu.edu.sa
                Article
                OVJ-12-718
                10.5455/OVJ.2022.v12.i5.17
                9789767
                36589401
                b57c57bb-6918-44dd-89e8-0a35201543f4
                Copyright @ 2022

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 07 June 2022
                : 22 August 2022
                Categories
                Original Research

                morphology,skull,sutures,young camels
                morphology, skull, sutures, young camels

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