A Biomechanical Study on the Effect of Premature Fusion of the Frontosphenoidal Suture on Orbit Asymmetry in Unilateral Coronal Synostosis

Objective The coronal ring of patients with unilateral coronal synostosis (UCS) presents premature fusion. This study aims to elucidate whether or not the dynamic behavior of the orbit in response to intracranial pressure (ICP) differs between patients in whom the premature fusion exists only in the...

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Veröffentlicht in:The Cleft palate-craniofacial journal 2010-01, Vol.47 (1), p.82-91
Hauptverfasser: Nagasao, Tomohisa, Miyamoto, Junpei, Uchikawa, Yumiko, Tamaki, Tamotsu, Yamada, Akira, Kaneko, Tsuyoshi, Jiang, Hua, Issiki, Yasushige
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container_issue 1
container_start_page 82
container_title The Cleft palate-craniofacial journal
container_volume 47
creator Nagasao, Tomohisa
Miyamoto, Junpei
Uchikawa, Yumiko
Tamaki, Tamotsu
Yamada, Akira
Kaneko, Tsuyoshi
Jiang, Hua
Issiki, Yasushige
description Objective The coronal ring of patients with unilateral coronal synostosis (UCS) presents premature fusion. This study aims to elucidate whether or not the dynamic behavior of the orbit in response to intracranial pressure (ICP) differs between patients in whom the premature fusion exists only in the frontoparietal suture (FPS) and those in whom the premature fusion extends to the frontosphenoidal suture (FSS). Methods A total of 15 UCS patients were included in the present study. Patients in whom premature fusion was seen inside the FPS and those in whom premature fusion extended to the FSS were categorized as FP Only (4.2 ± 1.4 m/o) and FP + FS groups (4.6 ± 2.2 m/o), respectively. On the basis of computed tomography (CT) data, computer-aided design models were produced. Pressure of 15 mm Hg was applied to the neurocranium of each skull model to simulate ICP. Using the finite element method, the displacements presented by each model's orbits were calculated. Displacements of the two groups were compared. Results The orbit demonstrated greater displacement in the FP Only group than in the FP + FS group, suggesting that premature closure of the FSS disturbs growth of the orbit in response to ICP. Conclusion In performing surgical treatment for UCS, the degree of fusion that the FSS presents should be evaluated carefully. In cases in which the FSS presents premature fusion, it is recommended to release the fusion at an early stage of cranial growth to improve the appearance of the orbital region.
doi_str_mv 10.1597/08-164.1
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This study aims to elucidate whether or not the dynamic behavior of the orbit in response to intracranial pressure (ICP) differs between patients in whom the premature fusion exists only in the frontoparietal suture (FPS) and those in whom the premature fusion extends to the frontosphenoidal suture (FSS). Methods A total of 15 UCS patients were included in the present study. Patients in whom premature fusion was seen inside the FPS and those in whom premature fusion extended to the FSS were categorized as FP Only (4.2 ± 1.4 m/o) and FP + FS groups (4.6 ± 2.2 m/o), respectively. On the basis of computed tomography (CT) data, computer-aided design models were produced. Pressure of 15 mm Hg was applied to the neurocranium of each skull model to simulate ICP. Using the finite element method, the displacements presented by each model's orbits were calculated. Displacements of the two groups were compared. Results The orbit demonstrated greater displacement in the FP Only group than in the FP + FS group, suggesting that premature closure of the FSS disturbs growth of the orbit in response to ICP. Conclusion In performing surgical treatment for UCS, the degree of fusion that the FSS presents should be evaluated carefully. In cases in which the FSS presents premature fusion, it is recommended to release the fusion at an early stage of cranial growth to improve the appearance of the orbital region.</description><identifier>ISSN: 1055-6656</identifier><identifier>EISSN: 1545-1569</identifier><identifier>DOI: 10.1597/08-164.1</identifier><identifier>PMID: 20078204</identifier><identifier>CODEN: CPJOEG</identifier><language>eng</language><publisher>Los Angeles, CA: SAGE Publications</publisher><subject>Biological and medical sciences ; Biomechanical Phenomena ; Biomechanics. Biorheology ; Birth defects ; Computer Simulation ; Cranial Sutures - surgery ; Craniosynostoses - complications ; Craniosynostoses - diagnostic imaging ; Craniosynostoses - surgery ; Deformities ; Dentistry ; Diseases of mother, fetus and pregnancy ; Finite Element Analysis ; Frontal Bone ; Fundamental and applied biological sciences. Psychology ; Gynecology. Andrology. Obstetrics ; Humans ; Infant ; Intracranial Pressure ; Medical sciences ; Mouth ; Orbit - diagnostic imaging ; Orbit - growth &amp; development ; Orbital Diseases - etiology ; Otorhinolaryngology. Stomatology ; Parietal Bone ; Pregnancy. Fetus. Placenta ; Radiography ; Sphenoid Bone ; Studies ; Tissues, organs and organisms biophysics</subject><ispartof>The Cleft palate-craniofacial journal, 2010-01, Vol.47 (1), p.82-91</ispartof><rights>2010 American Cleft Palate-Craniofacial Association. 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This study aims to elucidate whether or not the dynamic behavior of the orbit in response to intracranial pressure (ICP) differs between patients in whom the premature fusion exists only in the frontoparietal suture (FPS) and those in whom the premature fusion extends to the frontosphenoidal suture (FSS). Methods A total of 15 UCS patients were included in the present study. Patients in whom premature fusion was seen inside the FPS and those in whom premature fusion extended to the FSS were categorized as FP Only (4.2 ± 1.4 m/o) and FP + FS groups (4.6 ± 2.2 m/o), respectively. On the basis of computed tomography (CT) data, computer-aided design models were produced. Pressure of 15 mm Hg was applied to the neurocranium of each skull model to simulate ICP. Using the finite element method, the displacements presented by each model's orbits were calculated. Displacements of the two groups were compared. Results The orbit demonstrated greater displacement in the FP Only group than in the FP + FS group, suggesting that premature closure of the FSS disturbs growth of the orbit in response to ICP. Conclusion In performing surgical treatment for UCS, the degree of fusion that the FSS presents should be evaluated carefully. In cases in which the FSS presents premature fusion, it is recommended to release the fusion at an early stage of cranial growth to improve the appearance of the orbital region.</description><subject>Biological and medical sciences</subject><subject>Biomechanical Phenomena</subject><subject>Biomechanics. 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Placenta</topic><topic>Radiography</topic><topic>Sphenoid Bone</topic><topic>Studies</topic><topic>Tissues, organs and organisms biophysics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nagasao, Tomohisa</creatorcontrib><creatorcontrib>Miyamoto, Junpei</creatorcontrib><creatorcontrib>Uchikawa, Yumiko</creatorcontrib><creatorcontrib>Tamaki, Tamotsu</creatorcontrib><creatorcontrib>Yamada, Akira</creatorcontrib><creatorcontrib>Kaneko, Tsuyoshi</creatorcontrib><creatorcontrib>Jiang, Hua</creatorcontrib><creatorcontrib>Issiki, Yasushige</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Nursing &amp; Allied Health Database</collection><collection>Health &amp; Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Psychology Database (Alumni)</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Canadian Business &amp; Current Affairs Database</collection><collection>Canadian Business &amp; Current Affairs Database (Alumni Edition)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>ProQuest Health &amp; Medical Complete (Alumni)</collection><collection>Nursing &amp; Allied Health Database (Alumni Edition)</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Psychology Database</collection><collection>CBCA Reference &amp; Current Events</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>ProQuest One Psychology</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><jtitle>The Cleft palate-craniofacial journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nagasao, Tomohisa</au><au>Miyamoto, Junpei</au><au>Uchikawa, Yumiko</au><au>Tamaki, Tamotsu</au><au>Yamada, Akira</au><au>Kaneko, Tsuyoshi</au><au>Jiang, Hua</au><au>Issiki, Yasushige</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Biomechanical Study on the Effect of Premature Fusion of the Frontosphenoidal Suture on Orbit Asymmetry in Unilateral Coronal Synostosis</atitle><jtitle>The Cleft palate-craniofacial journal</jtitle><addtitle>Cleft Palate Craniofac J</addtitle><date>2010-01</date><risdate>2010</risdate><volume>47</volume><issue>1</issue><spage>82</spage><epage>91</epage><pages>82-91</pages><issn>1055-6656</issn><eissn>1545-1569</eissn><coden>CPJOEG</coden><abstract>Objective The coronal ring of patients with unilateral coronal synostosis (UCS) presents premature fusion. This study aims to elucidate whether or not the dynamic behavior of the orbit in response to intracranial pressure (ICP) differs between patients in whom the premature fusion exists only in the frontoparietal suture (FPS) and those in whom the premature fusion extends to the frontosphenoidal suture (FSS). Methods A total of 15 UCS patients were included in the present study. Patients in whom premature fusion was seen inside the FPS and those in whom premature fusion extended to the FSS were categorized as FP Only (4.2 ± 1.4 m/o) and FP + FS groups (4.6 ± 2.2 m/o), respectively. On the basis of computed tomography (CT) data, computer-aided design models were produced. Pressure of 15 mm Hg was applied to the neurocranium of each skull model to simulate ICP. Using the finite element method, the displacements presented by each model's orbits were calculated. Displacements of the two groups were compared. Results The orbit demonstrated greater displacement in the FP Only group than in the FP + FS group, suggesting that premature closure of the FSS disturbs growth of the orbit in response to ICP. Conclusion In performing surgical treatment for UCS, the degree of fusion that the FSS presents should be evaluated carefully. In cases in which the FSS presents premature fusion, it is recommended to release the fusion at an early stage of cranial growth to improve the appearance of the orbital region.</abstract><cop>Los Angeles, CA</cop><pub>SAGE Publications</pub><pmid>20078204</pmid><doi>10.1597/08-164.1</doi><tpages>10</tpages></addata></record>
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subjects Biological and medical sciences
Biomechanical Phenomena
Biomechanics. Biorheology
Birth defects
Computer Simulation
Cranial Sutures - surgery
Craniosynostoses - complications
Craniosynostoses - diagnostic imaging
Craniosynostoses - surgery
Deformities
Dentistry
Diseases of mother, fetus and pregnancy
Finite Element Analysis
Frontal Bone
Fundamental and applied biological sciences. Psychology
Gynecology. Andrology. Obstetrics
Humans
Infant
Intracranial Pressure
Medical sciences
Mouth
Orbit - diagnostic imaging
Orbit - growth & development
Orbital Diseases - etiology
Otorhinolaryngology. Stomatology
Parietal Bone
Pregnancy. Fetus. Placenta
Radiography
Sphenoid Bone
Studies
Tissues, organs and organisms biophysics
title A Biomechanical Study on the Effect of Premature Fusion of the Frontosphenoidal Suture on Orbit Asymmetry in Unilateral Coronal Synostosis
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