Annals of Anatomy-Anatomischer Anzeiger最新文献

{"title":"Morphology and anatomical variability of the external auditory canal: A population-based MRI study","authors":"Lisa Hennig ,&nbsp;Markus Krüger ,&nbsp;Robin Bülow ,&nbsp;Till Ittermann ,&nbsp;Friedrich Ihler ,&nbsp;Franziska Krohn-Jäger ,&nbsp;Karl-Friedrich Krey ,&nbsp;Amro Daboul","doi":"10.1016/j.aanat.2024.152319","DOIUrl":"10.1016/j.aanat.2024.152319","url":null,"abstract":"<div><h3>Background</h3><p>The external auditory canal (EAC) exhibits a complex morphology and strong inter-individual variations. However, these have not yet been comprehensively described in the literature.</p></div><div><h3>Purpose</h3><p>This study aims to determine the width, height and cross-sectional area of the cartilaginous portion of the EAC and to describe the three-dimensional morphology and variability of different EACs.</p></div><div><h3>Methods</h3><p>Magnetic resonance imaging was performed on 870 subjects (401 male, 469 female, resulting in 1740 EACs) who participated in the longitudinal, population-based cohort study ‘Study of Health in Pomerania–START-3’. The height and width were measured in the cartilaginous part of the EAC, between the first and second bend. The variability of the EAC morphology was visualized in three-dimensional models.</p></div><div><h3>Results</h3><p>The mean height (vertical length) of the EAC was 8.62 mm (SD = 2.42) on the right, 8.47 mm (SD = 2.36) on the left. The width (horizontal length) was 4.08 mm (SD = 1.6) on the right, 3.93 mm (SD = 1.64) on the left. The EAC cross-section was 28.6 mm² (SD = 15.19) on the right, 27.15 mm² (SD = 14.33) on the left. The average cross-sectional area of the EAC in men was higher than in women. Subjects with larger body size had larger cross-sectional areas. Subjects with higher body mass index tended to have smaller cross-sections. Although the average EAC had an oval shape, a three-dimensional comparison of different EACs revealed strong individual variation in morphology.</p></div><div><h3>Conclusion</h3><p>This study enhances the understanding of otolaryngologists and anatomists regarding the complex morphology and variability of the cartilaginous portion of the EAC.</p></div>","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"257 ","pages":"Article 152319"},"PeriodicalIF":2.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0940960224001110/pdfft?md5=487ab6ce7cdec3e414fe6bd64ac22015&pid=1-s2.0-S0940960224001110-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142115851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Periapical surgery and different root obturation protocols for upper central incisor: A finite elements analysis","authors":"E. Klein-Franke ,&nbsp;E. Youssef ,&nbsp;L. Keilig ,&nbsp;C. Bourauel ,&nbsp;I. Dörsam","doi":"10.1016/j.aanat.2024.152325","DOIUrl":"10.1016/j.aanat.2024.152325","url":null,"abstract":"<div><h3>Background</h3><p>The aim of this study was to determine the effect of root canal filling using different obturation materials combined with apicoectomy in upper central incisors under loading with 1 N and 100 N. The effect of incomplete root formation was also investigated.</p></div><div><h3>Methods</h3><p>Based on a CBCT-scan, a model of an upper central incisor was created. The model was altered to simulate different clinical situations: root canal treatment, apicoectomy at two different lengths and with different obturation protocols, and immature root formation after trauma. In each model the tooth was loaded with 1 and 100 N, and peak Von Mises stress of bone and tooth, elastic strain of the periodontal ligament, as well as rotation and displacement of the tooth were measured.</p></div><div><h3>Results</h3><p>Periapical surgery increases stress in dentin and the surrounding bone. Different obturation materials only produce minor differences in a coronally intact tooth.</p></div><div><h3>Conclusions</h3><p>Interincisal angle or loading direction strongly affects all measured values and needs to be considered when planning periapical surgery or comparing finite element analysis. Immature roots show the highest stress values in this study, reaching half the yield strength of dentine.</p></div>","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152325"},"PeriodicalIF":2.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0940960224001171/pdfft?md5=35e171e8d3f866c955ecfe81192aa57c&pid=1-s2.0-S0940960224001171-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142089204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new insight for investigating the prenatal and postnatal ossification centers of pelvic and femur bones in white New Zealand rabbits (Oryctolagus cuniculus) using 3D CT, double stain technique, and morphometry","authors":"Basma M. Kamal ,&nbsp;Samir A.A. El-Gendy ,&nbsp;Ahmed M. Rashwan ,&nbsp;Hanan H. Abd-Elhafeez ,&nbsp;Soha Soliman ,&nbsp;Neveen E.R. El-Bakary ,&nbsp;Ahmed A. El-Mansi ,&nbsp;Mamdouh B. Eldesoqui ,&nbsp;Mohamed A.M. Alsafy","doi":"10.1016/j.aanat.2024.152316","DOIUrl":"10.1016/j.aanat.2024.152316","url":null,"abstract":"<div><h3>Background</h3><p>The ossification centers in rabbit limbs are related to fetal age and bone maturation. Objective: To address the limited studies on ossification in the hind limbs of New Zealand rabbits, we investigated the prenatal and postnatal development of the pelvic and femur bones.</p></div><div><h3>Methods</h3><p>Double staining with Alcian Blue and Alizarin Red, computed tomography (CT), and 3D reconstruction were employed to visualize and analyze ossification centers in detail.</p></div><div><h3>Results</h3><p>Using double staining, we observed these patterns: At prenatal days 18 and 21, ossification centers appeared in the ilium. By prenatal days 23 and 25, ossification began in the ischium. On postnatal day 1, ilium ossification centers spread across most of the ilium wings, except for the iliac crest, and new centers appeared in the pubis and cotyloid bones. Most bones had ossified by the third week and one month postnatal, except for the iliac crest and ischial tuberosity. At 1.5 months, both were fully ossified. On day 18 post coitum, an ossification center was visible in the middle of the femur shaft. By day 28 post coitum, ossification extended through the shaft, and postnatally, new ossification spots appeared at the extremities by day one and week one. By the third week, complete ossification of the femur head, lesser trochanter, third trochanter, medial condyle, and lateral condyle was observed. At 1.5 months, the entire proximal extremity was ossified.</p></div><div><h3>Conclusion</h3><p>3D CT provided clear imaging of ossification progression in the pelvic and femur bones. This study enhances our understanding of vertebrate skeletal development.</p></div>","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152316"},"PeriodicalIF":2.0,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142082906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of learning strategies and motivation on anatomy test performance of undergraduate medical students","authors":"Laura Odontides ,&nbsp;Katharina Scheiter ,&nbsp;Thomas Shiozawa ,&nbsp;Martin R. Fischer ,&nbsp;Daniela Kugelmann ,&nbsp;Markus Berndt","doi":"10.1016/j.aanat.2024.152320","DOIUrl":"10.1016/j.aanat.2024.152320","url":null,"abstract":"<div><p>To learn and comprehend the large amount of information in gross anatomy, undergraduate students must self-regulate their learning to be properly prepared for the exams within the available time. Even though there are many studies on learning strategies and their influence on test results and motivation, the aim of this study is to investigate characteristics of learning strategies in detail and in relation to the anatomy course of first semester students and how their use is related to anatomy test performance. For assessing the learning strategies, we used the short version of the questionnaire “Learning Strategies of University Students” (LIST-K) (Klingsieck, 2018). Further, we investigated potential influences of motivation and resources used during the self-regulated learning process. The participants in this study (<em>N</em> = 108) filled in the above-mentioned questionnaire LIST-K and a written multiple-choice anatomy test. A k-means cluster analysis revealed three groups of students differing in their self-reported use of learning strategies. Students used either (1) predominantly metacognitive and resource-related strategies, (2) predominantly cognitive strategies, or (3) no specific learning strategies at all. We found no significant overall relationships between the use of learning strategies and test performance. A stepwise linear regression identified the use of cognitive learning strategies (β =.269) as a significant predictor for test performance (<em>R²</em> =.149, <em>p</em> =.003), possibly as these specific learning strategies help with a systematic and effective approach while studying anatomy and retrieving large amount of memorized information. Further, motivation was identified as a negative predictor (β = −.277), which might be a result of the short time periods students have to study for exams. Overall findings underline the importance of self-regulated learning as a positive predictor for academic performance. By understanding these factors, a more student-centered approach could be adopted by educators to improve medical education and equip students with valuable approaches for their continuous education, even beyond university.</p></div>","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152320"},"PeriodicalIF":2.0,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0940960224001122/pdfft?md5=15feea311db478db702c227b5b2fc6aa&pid=1-s2.0-S0940960224001122-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142057556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The feasibility of ultrasound-guided latex labeling of the anterolateral ligament in anatomical dissection – A cadaveric study","authors":"Felix Margenfeld ,&nbsp;Giorgio Tamborrini ,&nbsp;Matthias Beck ,&nbsp;Adib Zendehdel ,&nbsp;Oksana Raabe ,&nbsp;Amélie Poilliot ,&nbsp;Magdalena Müller-Gerbl","doi":"10.1016/j.aanat.2024.152324","DOIUrl":"10.1016/j.aanat.2024.152324","url":null,"abstract":"<div><h3>Background</h3><p>The present study aims to investigate the feasibility of labeling ligaments using ultrasound-guided injections. On formalin-fixed cadavers, the anterolateral ligament was selected and targeted for demonstration. The development of portable ultrasound machines and the ability to connect them to tablets via Bluetooth or WLAN makes it an accessible tool to implement into the anatomical dissection courses in order to associate medical imaging (MRI and ultrasound), anatomical structures and their subsequent dissection.</p></div><div><h3>Methods</h3><p>8 formalin fixed human cadavers were used for the ultrasound-guided injections of 1 mL of blue latex into the anterolateral ligament. 8 cadavers were not injected with latex for comparative purposes. The injections were performed by an experienced ultra-sonographer. After approximately 10 months, five dissections were carried out by students during the dissection course and three specimens were dissected by anatomists.</p></div><div><h3>Results</h3><p>The anterolateral ligament was successfully marked and demonstrated in 7 out of 8 cases. In 4 out of 5 cases, the dissection was primarily conducted by students, while in 3 out of 3 cases, it was performed by anatomists. The accuracy was 80 % and 100 %, respectively.</p></div><div><h3>Conclusion</h3><p>The present study demonstrated that labeling obscure ligaments, such as the anterolateral ligament, using ultrasound guidance is feasible on formalin-fixed cadavers. It also showed that students can successfully perform the dissections as the structure is highlighted and that the time between injection and dissection (approximately 10 months) has little impact on the outcome. The use of ultrasound in dissection courses should be further encouraged.</p></div>","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152324"},"PeriodicalIF":2.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S094096022400116X/pdfft?md5=cb5fc7c0d3baf79b162cd94c80b7779c&pid=1-s2.0-S094096022400116X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142074752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasonographic measurements of gastro-soleus fascia thickness in midportion Achilles tendinopathy: A case-control study","authors":"Larisa Ryskalin ,&nbsp;Federica Fulceri ,&nbsp;Gabriele Morucci ,&nbsp;Francesco Busoni ,&nbsp;Paola Soldani ,&nbsp;Marco Gesi","doi":"10.1016/j.aanat.2024.152321","DOIUrl":"10.1016/j.aanat.2024.152321","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Background&lt;/h3&gt;&lt;p&gt;The Achilles tendon is one of the thickest, largest, and strongest tendons in the human body. Biomechanically, the AT represents the conjoint tendon of the triceps surae muscle, placed in series with the plantar fascia (PF) to ensure force transmission from the triceps surae toward the toes during walking, running, and jumping. Commonly encountered in the diagnostic evaluation of heel pain, Achilles tendinopathy (AT) refers to a combination of pathological changes affecting the tendon itself often resulting from excessive repetitive stress and overuse. Nevertheless, increasing evidence demonstrates that structural alterations due to overuse or abnormal patterns of skeletal muscle activity are not necessarily restricted to the muscles or tendons but can also affect the fascial tissue. At the same time, there has been recent discussion regarding the role of the fascial tissue as a potential contributor to the pathophysiological mechanisms of the development of several musculoskeletal disorders including tendinopathies. To the best of our knowledge, ultrasound (US) imaging studies on the fascial structures related to the triceps surae complex, as well as their possible correlation with Achillodynia have never been presented in the current literature.&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Methods&lt;/h3&gt;&lt;p&gt;In the present study, a comparative US imaging evaluation of textural features of the suro-Achilleo-plantar complex was performed in 14 healthy controls and 14 symptomatic subjects complaining of midportion AT. The thickness of the Achilles tendon, paratenon, intermuscular fascia, and PF has been assessed with US. In addition, both groups underwent the Victorian Institute of Sport Assessment-Achilles (VISA-A), a disease-specific questionnaire that measures the severity of symptoms of AT. Correlations between quantitative ultrasound measures and VISA-A scores were determined through Pearson or Spearman's rho correlations.&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;p&gt;Our ultrasonographic findings revealed statistically significant differences (&lt;em&gt;p&lt;/em&gt;&lt;0.05) in Achilles tendon and paratenon thicknesses between AT patients and controls. No significant differences were observed between groups in PF at the calcaneal insertion as all mean measures were within the expected range of a normal PF on US imaging. In contrast, in tendinopathic subjects, the deep intermuscular fascia between medial gastrocnemius (MG) and soleus (SOL) muscles is significantly (&lt;em&gt;p&lt;/em&gt;&lt;0.01) and considerably thickened compared to those of healthy subjects. Moderate correlations exist between tendon and paratenon thicknesses (r= 0.54, p= 0.04) and between MG-SOL fascia and tendon thicknesses (r= 0.58, p= 0.03). Regarding symptom severity and US morphological findings, the Spearman ρ test showed no correlation.&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusions&lt;/h3&gt;&lt;p&gt;Our data demonstrate that, in symptomatic subjects, US alterations are not restricted to paratenon and intratendinous areas, but also ","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152321"},"PeriodicalIF":2.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142074753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vitamin D3 application and factors of its activity in the adrenal cortex of andropausal rats: A functionally-histological study","authors":"Vladimir Ajdžanović ,&nbsp;Branka Šošić-Jurjević ,&nbsp;Jasmina Živanović ,&nbsp;Marko Miler ,&nbsp;Sanja Stanković ,&nbsp;Jovan Ranin ,&nbsp;Branko Filipović","doi":"10.1016/j.aanat.2024.152322","DOIUrl":"10.1016/j.aanat.2024.152322","url":null,"abstract":"<div><h3>Introduction and aim</h3><p>Vitamin D supplementation in aging subjects manifests a positive effect on various health-related parameters. We performed a functionally-histological analysis of the adrenal cortex regarding the factors of vitamin D activity and corticosterone output after vitamin D3 application in a rat model of the andropause.</p></div><div><h3>Material and methods</h3><p>Middle-aged Wistar rats were divided into sham operated (<strong>SO</strong>; n=8), orchidectomized (<strong>Orx</strong>; n=8) and vitamin D3-treated orchidectomized (<strong>Orx+vit. D</strong>; n=8) groups. Vitamin D3 (5 μg/kg b.m.) was administered subcutaneously for three weeks, while the <strong>SO</strong> and <strong>Orx</strong> groups received the vehicle alone. Set objectives were achieved using histochemistry/immunohistochemistry, stereology, ultrastructural and biochemical analyses.</p></div><div><h3>Results</h3><p>Orchidectomy (<strong>Orx</strong>) decreased the adrenal cortex-related volume densities of vascular (p&lt;0,0001), vitamin D receptor (VDR; p&lt;0,0166), cytochrome P450 oxidase 2R1 (CYP 2R1; p&lt;0,0001) and cytochrome P450 oxidase 24 (CYP 24; p&lt;0,0001) depots, but increased the volume density of cytochrome P450 27B1 (CYP 27B1; p&lt;0,0001) depots. In <strong>Orx+vit. D</strong> rats, increase of the adrenal cortex-related volume densities of collagen (p&lt;0,0001), VDR (p&lt;0,0001) and CYP 2R1 (p&lt;0,0001) depots as well as the lipid-droplet diameter (p&lt;0,0001) in adrenocortical outer zona fasciculata cells was observed, while a decrease of volume densities of the vascular (p&lt;0,0001), CYP 27B1 (p&lt;0,0001) and CYP 24 (p&lt;0,0001) depots was registered, all versus <strong>Orx</strong> group. Plasma level of ACTH was decreased (p=0,0155) and serum concentrations of 25-hydroxyvitamin D3 and corticosterone were increased (p&lt;0,0001 and p=0,0187, respectively), all after the same treatment.</p></div><div><h3>Conclusions</h3><p>Increased corticosterone output after vitamin D3 application to andropausal rats appears not to be related to increased availability of 25-hydroxyvitamin D3 and decreased degradation of 1,25-dihydroxyvitamin D3 in adrenal tissue, but rather involves the central regulatory mechanisms.</p></div>","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152322"},"PeriodicalIF":2.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142057557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of religio-cultural beliefs on whole-body donation: A quantitative analysis of a predominantly South African Pedi Community","authors":"Matome N. Matshipi ,&nbsp;Brenda Z. De Gama","doi":"10.1016/j.aanat.2024.152315","DOIUrl":"10.1016/j.aanat.2024.152315","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Background&lt;/h3&gt;&lt;p&gt;Body donation is a predominant mode of body sourcing in many countries including South Africa; however, it continues to be limited among the different ethnic groups in the Black African population of South Africa which have been observed to be largely unwilling to provide consent to donate their bodies. Religious and cultural beliefs have been suggested to influence willingness to donate one’s body to science, with most religions regarded as accepting of body donation globally. In contrast, cultural beliefs and practices in the African continent impede body donation. Therefore, it is crucial to understand the factors that influence willingness to participate in body donation among the various ethnic groups of the Black African population of South Africa, particularly the Pedi ethnic group.&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;p&gt;This study sought to investigate factors that determine the disposition to participate in body donation and the influence of religious and cultural beliefs on willingness to consent to donate one’s body among a predominantly Pedi community of the Black African population of South Africa in the Limpopo province.&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Methods&lt;/h3&gt;&lt;p&gt;In this cross-sectional study, 300 four-page questionnaires were distributed to conveniently sampled individuals from the GaMaphale (Pipa) village of the Limpopo province of South Africa. Descriptive statistics (frequency tables and Pearson’s chi-square test for independence) followed by a stepwise backward regression were conducted to obtain key factors determining willingness to donate one’s body, the influence of religious and cultural beliefs, and also the likelihood of willingness to participate in body donation in this community. A &lt;em&gt;p&lt;/em&gt;-value of &lt; 0.05 was considered statistically significant.&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;p&gt;A total of 190 (63 %) responses were obtained. The level of awareness about body donation was 30 % (n= &lt;sup&gt;57&lt;/sup&gt;/&lt;sub&gt;190&lt;/sub&gt;), and 41 % (n= &lt;sup&gt;78&lt;/sup&gt;/&lt;sub&gt;190&lt;/sub&gt;) of respondents were willing to donate their bodies. Age (&lt;em&gt;p&lt;/em&gt; = 0.001), educational level (&lt;em&gt;p&lt;/em&gt; = 0.037), belief in a higher entity (&lt;em&gt;p&lt;/em&gt; = 0.007), ancestral (&lt;em&gt;p&lt;/em&gt; &lt; 0.001), and religious (&lt;em&gt;p&lt;/em&gt; &lt; 0.001) beliefs allowing for body donation were statistically associated with willingness to donate one’s body. The elderly respondents were less likely to agree to donate their bodies compared to younger adults. Respondents who understood that religion allowed them to self-donate were 50 times more likely to agree to donate their bodies than those who did not.&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Discussion and conclusion&lt;/h3&gt;&lt;p&gt;Findings reflect that a high percentage of respondents were unaware of body donation while a considerable number of respondents were willing to donate their bodies to science based on their religious and cultural beliefs allowing them to do so. Potential body donors from this community will likely be younger and belong ","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152315"},"PeriodicalIF":2.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0940960224001079/pdfft?md5=80a08f0fa5d92ec51548e1ccbfb2c0b2&pid=1-s2.0-S0940960224001079-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141914822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomechanical characteristics of maxillary anterior incisor, conventional immediate implantation and socket shield technique — A finite element analysis and case report","authors":"Zhangyan Ye ,&nbsp;Mingquan Yu ,&nbsp;Yanwu Ji ,&nbsp;Shengrui Jia ,&nbsp;Xiaomin Xu ,&nbsp;Huiyu Yao ,&nbsp;Xiaowen Hua ,&nbsp;Zhongqiang Feng ,&nbsp;Guangwei Shangguan ,&nbsp;Jun Zhang ,&nbsp;Xuekun Hou ,&nbsp;Xi Ding","doi":"10.1016/j.aanat.2024.152313","DOIUrl":"10.1016/j.aanat.2024.152313","url":null,"abstract":"<div><h3>Background</h3><p>To prevent the absorption and collapse of the labial bone plate of the anterior teeth, immediate implantation and socket shield technique have been increasingly applied to anterior dental aesthetic implant restoration.</p></div><div><h3>Objective</h3><p>To provide a biomechanical basis for implant restoration of maxillary anterior teeth, finite element analysis was used to investigate the stress peak and distribution in different anatomical sites of natural teeth, conventional immediate implantation and socket shield technique.</p></div><div><h3>Methods</h3><p>Three maxillary finite element models were established, including a maxillary incisor as a natural tooth, a conventional immediate implantation and a socket shield technique. A mechanical load of 100 N was applied to simulate and analyze the biomechanical behavior of the root, periodontal ligament (PDL), implant and surrounding bone interface.</p></div><div><h3>Results</h3><p>The stress distribution of the natural tooth was relatively uniform under load. The maximum von Mises stress of the root, periodontal ligament, cortical bone and cancellous bone were 20.14 MPa, 2.473 MPa, 19.48 MPa and 5.068 MPa, respectively. When the conventional immediate implantation was loaded, the stress was mainly concentrated around the neck of implant. Maximum stress on the surface of the implant was 102 MPa, the cortical bone was 16.13 MPa, and the cancellous bone was 18.29 MPa. When the implantation with socket shield technique was loaded, the stress distribution of the implant was similar to that of immediate implantation. Maximum stress on the surface of the implant was 100.5 MPa, the cortical bone was 23.11 MPa, the cancellous bone was 21.66 MPa, the remaining tooth fragment was 29.42 MPa and the periodontal ligament of the tooth fragment was 1.131 MPa.</p></div><div><h3>Conclusions</h3><p>1. Under static loading, both socket shield technology and conventional immediate implantation can support the esthetic restoration of anterior teeth biomechanically. 2.Under short-term follow-up, both immediate implant and socket shield technology achieved satisfactory clinical results, including bone healing and patient satisfaction. 3.The stress distribution is mainly located on the buccal bone surface of the implant and is associated with resorption of the buccal bone plate after implant replacement in both socket shield technology and conventional immediate implantation. 4.The presence of retained root fragment had an impact on the bone graft gap. In immediate implantation, the peak stress was located in the cortical bone near the implant position, while in socket shield technology, the peak stress was at the neck of the cortical bone corresponding to the retained root fragment.</p></div>","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152313"},"PeriodicalIF":2.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141891212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A single Angiofil-latex injection for both radiological and anatomical assessment of arterial territories in the limbs","authors":"Julie Manon ,&nbsp;Gaspary Fodjeu ,&nbsp;Robin Evrard ,&nbsp;Lucien Van den Broeck ,&nbsp;Mathieu Jacob ,&nbsp;Emmanuel Coche ,&nbsp;Olivier Cornu ,&nbsp;Catherine Behets ,&nbsp;Benoît Lengelé","doi":"10.1016/j.aanat.2024.152312","DOIUrl":"10.1016/j.aanat.2024.152312","url":null,"abstract":"<div><h3>Introduction</h3><p>Postmortem evaluation of the human vascular system has a long history, with advancements ranging from dissections to modern imaging techniques like computed tomography (CT scan). This study designs a novel combination of Angiofil, a liquid radiopaque polymer, and latex, a flexible cast material, for cadaveric vascular analysis.</p></div><div><h3>Material &amp; methods</h3><p>The aim was to synergize the advantages of both components, providing accurate radiological images and optimal dissection conditions. Three arterial territories (lateral circumflex femoral artery, profunda brachii artery, and radial artery) were injected and assessed through CT scans and dissections.</p></div><div><h3>Results</h3><p>The Angiofil-latex mixture allowed successful visualization of the vascular networks, offering a simple, reproducible, and non-toxic approach. Quantitative assessments of the three territories, including diameters and lengths, showed comparable results between CT scan and dissection.</p></div><div><h3>Discussion</h3><p>The technique precision and versatility make it an accessible and valuable tool for anatomical studies, potentially extending its application to MRI analyses. Overall, the Angiofil-latex combination presents a cost-effective solution for researchers, offering enhanced visibility and detailed anatomical insights for various applications, including anatomical variation studies.</p></div>","PeriodicalId":50974,"journal":{"name":"Annals of Anatomy-Anatomischer Anzeiger","volume":"256 ","pages":"Article 152312"},"PeriodicalIF":2.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0940960224001043/pdfft?md5=f3edf5df381dbefddea9544d7a3dc7b7&pid=1-s2.0-S0940960224001043-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}