Konstantinos Natsis

Konstantinos Natsis
Aristotle University of Thessaloniki | AUTH · Department of Anatomy and Surgical Anatomy

MD, PhD, BSc, FFIMS

About

313
Publications
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Introduction
Konstantinos Natsis currently works at the Department of Anatomy and Surgical Anatomy, Aristotle University of Thessaloniki. He is Director of the Department and President of the Hellenic Anatomical Society. Konstantinos does research in Sports Medicine, Physiotherapy and Orthopedic Surgery. Their current project is 'about the variations on craniocervical junction and craniosynostosis'.

Publications

Publications (313)
Article
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Purpose Reviews and meta-analyses concerning the effectiveness of extended reality technologies (ERTs) (namely virtual, augmented, and mixed reality-VR, AR, and MR) in anatomy education (AE) have resulted in conflicting outcomes. The current review explores the existing evidence provided by reviews of AE literature regarding the effectiveness of ER...
Poster
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Muscle and tendon aberrations have been described in the literature for decades. The current case report describes a duplication of the sartorius muscle (SM). During the dissection of a male cadaver of 55 years of age, in the Anatomy Department of AUTh a double-headed SM was identified. No ethical approval was required for the conduction of this st...
Poster
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Horseshoe kidney (HSK) is the most common congenital renal anomaly, estimated at about 0.25% among the general population. HSK shows variations in origin, number, and size of the renal vasculature. In this report, the detailed anatomy of a single case of HSK is described. During the abdominal dissection of a male cadaver in the Anatomy Department o...
Article
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Purpose The computed tomography (CT) study investigates the olfactory fossa (OF) morphometry and morphology. Methods Fifty Greek adult dried skulls were macroscopically investigated for the detection of the OF morphological patterns and after a multiplanar CT reconstruction, the OF morphometry was accurately calculated using a digital ruler. Resu...
Article
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Purpose To estimate the prevalence of the left-sided aortic arch (LSAA) variants, and the effect of possible moderators on variants’ detection. Methods A systematic online literature search was conducted. The pooled prevalence with 95% confidence intervals was estimated for the typical and atypical branching patterns to compare the overall proport...
Article
Objective: This report presents a unilateral branching pattern of the axillary artery (AA) represented by an unusual common trunk division, vessel multiplications and concomitant neural variations. Case report: In a Greek male cadaver, the right AA branched into a subscapular trunk and two accessory lateral thoracic arteries of variable origin a...
Article
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The anterior cerebral artery (ACA) branching pattern may be particularly complex and variant including bifurcations, trifurcations or quadrifurcations, thus leading to typical or atypical vessels. The bihemispheric ACA (BhACA) variant crosses the midline to supply the contralateral hemisphere. The current case highlights a left-sided ACA trifurcati...
Article
The lack of meticulous knowledge concerning the topographical anatomy of the deep branch of the ulnar nerve (DUN) may pose difficulties, leading to a delay or a misdiagnosis of a DUN injury. Identification of the DUN is quite difficult without precise anatomical landmarks as reference points. The current study investigates the topography of the DUN...
Article
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PurposeThe suspension imposed on Universities due to COVID-19 pandemic impeded students’ educational opportunities. Alternative teaching modalities have been used. Substitution of dissection courses on cadavers was a great challenge. Present study investigates students’ view on the efficacy of the “online” pre-recorded “dissection educational video...
Article
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PurposeTo describe the cervical vagus nerve (CVN) topography at the thyroid lobe (TL) level using high-resolution ultrasound and to investigate the possible association with anthropometric data, TL size, and thyroid disease.Methods We prospectively examined 550 CVNs in 275 (205 female, 70 male) individuals with normal thyroid (53/275, 19.3%), multi...
Article
The purpose of this study was to determine the prevalence and to investigate the morphology of the sulcus of the caudate process in a Greek population, along with a systematic review and meta-analysis of the literature. Overall, 103 consecutive patients undergoing laparoscopic cholecystectomy were included in the analysis. The sulcus was present in...
Article
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PurposeThe splenic artery (SA) is the largest and most tortuous branch of the celiac trunk with a wide spectrum of variants, particularly in its terminal branches.Methods The current study presents a systematic review of the English literature on the SA variations, with emphasis on its terminal branching patterns.ResultsThirty cadaveric studies (31...
Article
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Sport is historically designated by the binary categorization of male and female that conflicts with modern society. Sport’s governing bodies should consider reviewing rules determining the eligibility of athletes in the female category as there may be lasting advantages of previously high testosterone concentrations for transwomen athletes and cur...
Article
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Purpose Basivertebral foramina (BVF) are openings of the posterior wall of vertebral body (VB) that lead to basivertebral canals (BVC), where homonymous neurovascular bundle courses. BVF and BVC are implicated with spinal fractures, vertebral augmentation and basivertebral nerve radiofrequency ablation. Despite their essential clinical impact, know...
Article
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Aim of the present study was to determine the impact of the COVID-19 outbreak on anatomy teaching to medical and dental students comparing the traditional anatomy teaching with three remote teaching modalities. A cross-sectional study was conducted among undergraduate medical and dental students of the Aristotle University of Thessaloniki. Four hun...
Article
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Axonal count is the base for efficient nerve transfer; despite its capital importance, few studies have been published on human material, most research approaches being performed on experimental animal models of nerve injury. Thus, standard analysis methods are still lacking. Quantitative data obtained have to be reproducible and comparable with pu...
Article
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Purpose: The study highlights azygos vein (AV) topography, arrangement and confluence morphometry in dyspnoea and tachycardia patients of extrapulmonary and extracardiac aetiology. Method: Computed-tomography angiography of 25 male and 26 female patients (mean age 66.5 years) were studied for: thoracic vertebral (T) height of AV- superior vena c...
Article
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Introduction Typical branching pattern of the left-sided aortic arch consists of the brachiocephalic trunk (BCT), the left common carotid artery (LCCA) and the left subclavian artery (LSA). Variant patterns have been associated with a broad spectrum of pathologies. The meticulous knowledge of potential aortic arch variants is of utmost importance t...
Article
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Psoriasis constitutes a chronic inflammatory disease that affects 0.5‐3% of the population with a serious negative impact on patients' quality of life¹. Beyond its correlation with known cardiovascular risk factors, psoriasis is considered an independent risk factor for atherosclerosis and subsequent cardiovascular events.
Article
Objective We aimed to investigate to what extent the literature supports that game-based learning (gamification) could play a significant role in anatomy education. Materials and methods PubMed, Education Resources Information Center and Cochrane Databases were searched for papers with purpose to investigate the educational outcomes of game-based...
Article
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Background Lumbrical muscles originate in the palm from the 4 tendons of the flexor digitorum profundus and course distally along the radial side of the corresponding metacarpophalangeal joints, in front of the deep transverse metacarpal ligament. The first and second lumbrical muscles are typically innervated by the median nerve, and third and fou...
Article
A 24-year-old male athlete, injured by a cricket bat during training, was transferred to the hospital with an open head bleeding trauma in the medial part of his right eye. He was conscious, with no memory loss and dizziness. A medial orbital wall fracture (MOWF) with a foreign body presence was depicted in X-ray. Head computed tomography scan conf...
Article
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PurposeThe present study is a systematic review of a relatively unknown structure of the posterolateral corner of the knee, the meniscofibular ligament (MFL), aiming at summarizing and broadening current scientific knowledge regarding this ligament anatomy, function, imaging and injury.Materials and methodsA systematic review was performed accordin...
Article
Background: Pterion is the junction of the frontal, parietal, greater wing of the sphenoid and the squamous part of the temporal bone. The sphenoparietal, frontotemporal, stellate and epipteric pteria were described. The current study determines pterion topography, morphology (variant types' frequency) and morphometry, as well as epipteric bones p...
Article
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PurposeThe critical literature review investigates the extent to which the current evidence supports that three-dimensional printing (3DP) could play an important role in human anatomy education.Methods PubMed, ERIC, and Cochrane databases were searched for papers dealing with the outcomes of 3DP implementation in human undergraduate anatomy educat...
Article
Background The lateral circumflex femoral artery (LCFA) branches encountered during anterior and lateral hip approaches; although vessels’ haemostasis is suggested in surgical textbooks, literature is scarce regarding their topography. The current study defines the exact location of the LCFA and its branches, based on osseous landmarks, as well as...
Article
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Purpose The purpose of the study was to analyze the total prevalence, morphologic, and morphometric characteristics of the pterygospinous (PS) bar and its gender and ethnic differences among populations. PS bar is an ossified anatomic structure stretching between the posterior margin of the lateral pterygoid lamina to the angular spine of the under...
Article
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The large intestine, part of the gastrointestinal tract (GI), is composed of all three germ layers, namely the endoderm, the mesoderm and the ectoderm, forming the epithelium, the smooth muscle layers and the enteric nervous system, respectively. Since gastrulation, these layers develop simultaneously during embryogenesis, signaling to each other c...
Article
During the course of our regular tutorial classes of Anatomy for undergraduates of the Nova Medical School of Lisbon, one of the students brought to our consideration the finding of a peculiar variation of the skull base foramina, in which she recognized duplication of the left foramen ovale. To the left, the medial foramen is 0.3 cm wide, and the...
Article
Accessory and atypical muscles of the upper limb are common, whereas symptomatic variations presenting with carpal tunnel syndrome (CTS) are rare. A rare unilateral accessory transverse carpal muscle located palmar to the transverse carpal ligament is described. The accessory muscle, associated with CTS clinical manifestations in a 38-year-old Gree...
Article
Lipomas represent the most common benign mesenchymal tumor. They are usually located subcutaneously and rarely become symptomatic. Occasionally pressure symptoms on adjacent neurovascular structures may be exerted, thereby causing functional impairment. Lipomas rarely grow larger than 5 cm, becoming the so-called giant lipomas, posing a real diagno...
Article
The anterior digastric muscle belly (ADMB) may present significant variations of substantial surgical importance. We present an unusual complex bilateral asymmetry of an accessory ADMB found when dissecting the submental area in a 72-year-old Greek male cadaver. A rare variant was recognized in the submental area constituted by a combination of bil...
Article
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The purpose of this paper is to present a series of votive reliefs from Graeco-Roman antiquity related to disorders of the lower extremities, in order to comprehend the importance of anatomical offerings as gifts of gratitude to healing gods such as Asclepius. The selected offerings cover disorders such as varicose vein disease and deformities of t...
Article
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Online technology advances and the reduction of their cost have facilitated their use by museums. Today, internet users visit museums’ websites around the world on regular basis. Website design helps to disseminate information and multimedia content from exhibitions and to attract visitors as well. The integrated communication strategy of the museu...
Article
Background: The outcomes of the implementation of augmented reality (AR) in anatomical education have not been reviewed so far. We performed a narrative review of the literature concerning these outcomes. Methods: We searched in the databases PubMed, Scopus, Cochrane, ERIC, CINAHL plus and Web of Science for papers with the aim to explore the ou...
Article
Despite efforts spanning two decades to control doping in sport, the problem persists with no real signs of abating. International opinion leaders in antidoping and Olympic sport were invited to discuss the future ideal of an elite sport system free from doping. The International Olympia Symposium “Becoming an Olympic Athlete without Doping,” was h...
Article
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Purpose The typical anatomical illustration of the trochlear notch articular surface includes a transverse rough non-articular ridge which separates the olecranon and coronoid part of the joint. This transverse ridge, the “bare area”, is not covered by cartilage and represents the optimal entry point for olecranon osteotomies. Aim of the present st...
Article
The muscular thenar branch typically arises from the median nerve distal to the transverse carpal ligament and supplies the thenar musculature. In the present cadaveric case, the existence of double muscular thenar branches is described. The two nerves originated from the first common palmar digital nerve and gave off five terminal muscular branche...
Article
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Purpose We aimed to evaluate the quantity and quality of current evidence concerning the outcomes of use of plastinated specimens in anatomy education. Methods We performed a narrative literature review, searching for papers dealing with the use of plastination in anatomy education. PubMed, Scopus, ERIC, Cochrane, Web of Science and CINAHL complet...
Article
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Background: Detailed knowledge of the popliteal artery division and possible anatomical variants is of paramount importance for vascular surgery. Aim: The aim of the current study was to highlight a rare unilateral case of posterior tibial artery hypoplasia. Materials and methods: A dissection was performed at the posterior surface of the tibia in...
Article
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Background: The third part of the vertebral artery (VA) coursing in vertebral artery groove (VAG) may be injured during posterior craniocervical junction approaches. Objective: The current study classifies all possible variants of the posterior arch (PA) of the atlas vertebra (C1), focusing on VAG and calculates their incidence. PA and VAG morph...
Data
ENLARGED EMISSARY SPHENOIDAL FORAMEN? OR DUPLICATION OF FORAMEN OVALE? UNUSUAL ANATOMICAL FINDINGS ON HUMAN SKULL BASE, WITH CLINICAL IMPLICATIONS. Bettencourt Pires M.; Piagkou M; Silva-Junior EX; Natsis K; Sousa-Junior JR; Casal D; Pais D. [and the student Rodrigues Póvoa AR]. During our regular tutorial classes of Anatomy for undergraduates at...
Article
Full-text available
Technology evolution and the need for teaching modernization led to the design of virtual reality applications in medical education. The current study aims to create an interactive environment by using three-dimensional (3D) models of the human arterial system. 3D arterial models allow undergraduate medical students to easily memorize main arterial...
Conference Paper
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The current cadaveric study in Greeks highlights characteristic cases of aortic arch variants found after dissection and underlines their impact on trachea. Coexisted neurovascular aberrations are also recorded.
Conference Paper
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This study highlights the lack of cadavers in the Greek Medical Schools of the Aristotle University of Thessaloniki (AUTh) and National and Kapodistrian University of Athens (NKUA) and investigates the causative factors of this shortage over time in Greece
Conference Paper
During our regular tutorial classes of Anatomy for undergraduates of the Nova Medical School of Lisbon, one of the students brought to our consideration the finding of a peculiar variation of the skull base foramina, in which she recognized duplication of the left foramen ovale. To the left, the medial foramen is 0.3 cm wide, and the lateral forame...
Article
Human cadaveric prosections are a traditional, effective, and highly appreciated modality of anatomy learning. Plastic models are an alternative teaching modality, though few studies examine their effectiveness in upper‐limb, musculoskeletal, anatomy learning. The purpose of this study is to investigate which modality is associated with a better ou...
Conference Paper
Full-text available
INTRODUCTION: Knowledge of the basivertebral foramina (BVF) morphology is limited, while clinical interest regarding their impact on imaging and surgery is undeniable. The study examines the BVF number, size and distribution in cervical, thoracic and lumbar vertebrae (CV, TV and LV). METHODS: 1581 dry disarticulated vertebrae of 70 Greek adult sk...
Article
Full-text available
The internet and web technologies have radically changed the way that users interact with museum exhibits. The websites and their related services play an important role in accessibility and interaction with the multimedia content of museums. The aim of the current research is to present a heuristic evaluation of forty-seven medical and anatomy mus...
Article
Full-text available
In a Greek Caucasian male cadaver, a combination of the following arterial variations were observed: an aberrant right subclavian artery originating as a last branch of the aortic arch and coursed posterior to the esophagus, a right non-recurrent laryngeal nerve, an atypical origin of the left suprascapular artery from the axillary artery, an unusu...
Article
The left umbilical vein is lodged on the fissure of the round ligament of the liver, from umbilicus to portal vein, just on the inferior margin of the falciform ligament. We report an anomalous course of the umbilical vein in a 39-week-old deceased male fetus, also exhibiting fetal thrombotic vasculopathy (FTV). In the present case, the umbilical v...
Article
Background The aim of the current study is to investigate the first and second lumbrical nerves as potential fibers donors to the deep motor branch of the ulnar nerve to avoid intrinsic atrophy in high ulnar nerve injuries. Methods Sixteen fresh frozen cadaveric hands were dissected, the radial lumbrical nerves accessed, and a coaptation, either i...
Article
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Patients undergo ACL reconstruction not only to avoid subsequent meniscal or chondral injuries and early osteoarthritis, but especially to return to the pre-injury level of activity. Yet, this level of activity is achieved in only 40 to 70% of the cases. This inability to return to the pre-injury level of activity, even when functional tests allow...
Article
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Background: The orbital floor (OrF) and infraorbital rim (IOR) repair in cases of complete destruction is challenging mainly due to the fact that the defect length cannot be measured. The aim of the current study is to develop a method of calculating the Orf length by using the gender and the lengths of the medial, superior and lateral orbital wal...