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Foramina

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https://www.readbyqxmd.com/read/29345723/anatomical-characteristics-of-the-lingual-foramen-in-ancient-skulls-a-cone-beam-computed-tomography-study-in-an-anatolian-population
#1
Kemal Özgür Demiralp, Seval Bayrak, Mukadder Orhan, Arzu Alan, Emine Şebnem Kurşun Çakmak, Kaan Orhan
BACKGROUND: The purpose of this study is to evaluate the anatomical features of lingual foramina and their bony canals in Anatolian ancient mandibles which belong to 9-10th century by using cone beam computed tomography (CBCT). MATERIALS AND METHODS: 58 ancient dry mandibles were scanned with CBCT. Lingual foramina were grouped into midline, paramedian, posterior foramina and combination of these groups. Midline group was also classified according to internal surface of the mandible (gonial tubercles)...
January 18, 2018: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29344072/bilateral-compressive-optic-neuropathy-from-renal-osteodystrophy-caused-by-branchio-oto-renal-syndrome-stabilised-after-parathyroidectomy
#2
Arun N E Sundaram, Archana Abhayambika, Sunil Kumar
Renal osteodystrophy can cause calvarial hypertrophy and narrowing of the neural canals and foramina. Compressive optic neuropathy is extremely rare in renal osteodystrophy and was reported once only. The authors report bilateral, simultaneous compressive optic neuropathy secondary to renal osteodystrophy with features of uremic leontiasis ossea in chronic renal failure caused by branchio-oto-renal syndrome. Because of the extensive calvarial hypertrophy and the surgical difficulties envisaged with optic canal decompression, conservative approach was pursued...
December 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/29339320/primary-obstruction-of-the-foramen-of-luschka-anatomy-histology-and-clinical-significance
#3
Laszlo Barany, Gabor Baksa, Patonay Lajos, Gergely Racz, Oliver Ganslandt, Michael Buchfelder, Peter Kurucz
BACKGROUND: The foramen of Luschka is a natural aperture between the fourth ventricle and the subarachnoid space at the cerebellopontine angle (CPA). Membranous closure of this foramen is referred to as primary obstruction. The available information about this variant and its role in the development of the cysts of the posterior fossa are contradictory in the literature. METHODS: Sixty-one formalin-fixed human brains (122 foramina) were involved in this study. Both the macroscopic and the histological features of the obstructed foramina were examined...
January 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29337783/s1-sacrectomy-for-re-recurrent-rectal-cancer-our-experience-with-reconstruction-using-an-expandable-vertebral-body-replacement-device
#4
Daniel Jin Keat Lee, Kelvin Yafan Wang, Peter Michael Sagar, Jake Timothy
INTRODUCTION: R0 resection is achieved by high sacrectomy for local recurrence of colorectal cancer, but significant rates of perioperative complications and long-term patient morbidity are associated with this procedure. In this report, we outline our unique experience of using an expandable cage for vertebral body reconstruction following S1 sacrectomy in a 66-year-old patient with re-recurrent rectal cancer. We aim to highlight several key steps, with a view to improving postoperative outcomes...
February 2018: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/29333774/-a-cone-beam-computed-tomography-study-on-the-anatomical-position-of-accessory-mandibular-foramina-in-jiangxi-adults
#5
Ke Xing, Li Bohan, Chen Linlin, Jiang Xindi
OBJECTIVE: This study used cone beam computed tomography (CBCT) to access the distribution and position of accessory mandibular foramina in the mandibular body of Jiangxi adults, and some safety rules of operation for clinics were provided. METHODS: Two hundred CBCT image subjects of Jiangxi adults were selected, which were divided into 4 groups by age with the same sex ratio. The number and position of accessory mandibular foramina in mandibular anterior teeth, premolars and molars region were described and the relationship between accessory mandibular foramina incidence and factors of age, gender and lateral were analyzed...
December 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29330991/diaphyseal-nutrient-foramina-in-dried-human-adult-long-bones-of-lower-limb-in-pakistan
#6
Ejaz Afzal, Fatima Sherin, Omair Khan, Noaman Hussain Siddiqui
BACKGROUND: osteogenesis needs circulation of blood in the bones. Bone growth, repair of fracture, maintenance of bone vitality and other injures also need blood circulation in proper way. Blood is allowed to flow via holes in the diaphysis, which are called as nutrient foramina. METHODS: The crosssectional study was done in the department of Anatomy, Ayub and Khyber Medical College (Osteology Sections). The aim was to observe diaphyseal nutrient foramina in the human long bones of the lower limb...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29325191/medium-term-outcome-and-ct-assessment-of-lateral-foraminotomy-at-the-lumbosacral-junction-in-dogs-with-degenerative-lumbosacral-stenosis
#7
Andrew John Worth, Angela Hartman, Janis P Bridges, Boyd R Jones, Joe I G Mayhew
OBJECTIVE:  This article aims to report the medium-term clinical outcome and assess persistence of enlargement of the lumbosacral lateral intervertebral neurovascular foramen using computed tomography (CT) volumetric analysis in dogs following lateral foraminotomy. MATERIALS:  Six dogs that underwent lumbosacral lateral foraminotomy on one or both sides were evaluated with CT prior to, immediately postoperatively (n = 2) and at 12 to 44 months of follow-up...
January 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29318364/five-mental-foramina-in-the-same-mandible-cbct-findings-of-an-unusual-anatomical-variant
#8
Andrea Borghesi, Stefania Pezzotti, Giorgio Nocivelli, Roberto Maroldi
The mental foramen is an important anatomic landmark located on the buccal aspect of the mandible, typically near the apex of the second premolar. Mental foramina exhibit many anatomical variations, including differences in size, shape, position, and number. The most frequent type of variation in number is the presence of double mental foramen, which has a reported incidence ranging from 1.4 to 12.5%. The incidence of triple mental foramen ranges from 0.7 to 1.2%. The frequency of accessory mental foramina varies among ethnic groups, with a low incidence in white Caucasian populations...
January 9, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29303470/previously-unreported-complications-associated-with-integrated-cage-screws-following-anterior-lumbar-interbody-fusion-report-of-2-cases
#9
Neginder Saini, Mohammad Zaidi, Maureen T Barry, Robert F Heary
Anterior lumbar interbody fusion (ALIF) is a widely performed surgical treatment for various lumbar spine pathologies. The authors present the first reports of virtually identical cases of complications with integrated screws in stand-alone interbody cages. Two patients presented with the onset of S-1 radiculopathy due to screw misplacements following an ALIF procedure. In both cases, an integrated screw from the cage penetrated the dorsal aspect of the S-1 cortical margin of the vertebra, extended into the neural foramen, and injured the traversing left S-1 nerve roots...
January 5, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29301094/induced-post-traumatic-apexification-20-year-follow-up-and-morphological-study-after-new-fracture
#10
Federica Fonzar, Leopoldo Forner, Riccardo Fabian-Fonzar, Carmen Llena
Apexification is an endodontic technique used in immature necrotic teeth, the primary goal of which is to induce a calcified barrier in roots with open apices and to promote the continuation of apical root development. A 7-year-old patient with a coronal fracture in a maxillary central incisor was treated with an apexification technique using calcium hydroxide. The apical closure was obtained after one year, then a permanent root canal filling was performed. The tooth was monitored for a period of 20 years, up to when a trauma caused its extraction...
January 1, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29299101/rib-head-dislocation-causing-spinal-canal-stenosis-in-a-child-with-neurofibromatosis-type-1
#11
Alan M Chen, Jeffrey B Neustadt, Jennifer Neville Kucera
A 10-year-old female with neurofibromatosis type 1 and severe dystrophic scoliosis presented with a two-month history of difficulty ambulating due to low back pain. The patient did not have any neurological symptoms. MRI of the thoracolumbar spine demonstrated subluxation of the right posterior tenth and eleventh ribs through their respective neural foramina, with mild mass effect on the thecal sac without abnormal cord signal or cord compression. Groups of neurofibromas were present along the right ribs and paravertebral soft tissues around these levels...
August 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29298825/bone-histological-correlates-for-air-sacs-and-their-implications-for-understanding-the-origin-of-the-dinosaurian-respiratory-system
#12
Markus Lambertz, Filippo Bertozzo, P Martin Sander
Air sacs are an important component of the avian respiratory system, and corresponding structures also were crucial for the evolution of sauropod dinosaur gigantism. Inferring the presence of air sacs in fossils so far is restricted to bones preserving internal pneumatic cavities and foramina as osteological correlates. We here present bone histological correlates for air sacs as a new potential identification tool for these elements of the respiratory system. The analysis of several avian and non-avian dinosaur samples revealed delicate fibres in secondary trabecular and secondary endosteal bone that in the former case (birds) is known or in the latter (non-avian dinosaurs) assumed to have been in contact with air sacs, respectively...
January 2018: Biology Letters
https://www.readbyqxmd.com/read/29298295/synchrotron-microtomography-of-a-nothosaurus-marchicus-skull-informs-on-nothosaurian-physiology-and-neurosensory-adaptations-in-early-sauropterygia
#13
Dennis F A E Voeten, Tobias Reich, Ricardo Araújo, Torsten M Scheyer
Nothosaurs form a subclade of the secondarily marine Sauropterygia that was well represented in late Early to early Late Triassic marine ecosystems. Here we present and discuss the internal skull anatomy of the small piscivorous nothosaur Nothosaurus marchicus from coastal to shallow marine Lower Muschelkalk deposits (Anisian) of Winterswijk, The Netherlands, which represents the oldest sauropterygian endocast visualized to date. The cranial endocast is only partially encapsulated by ossified braincase elements...
2018: PloS One
https://www.readbyqxmd.com/read/29287000/an-applied-anatomical-study-of-the-ethmoidal-arteries-computed-tomographic-and-direct-measurements-in-human-cadavers
#14
Ulrik Ascanius Felding, Kirstine Karnov, Anne Clemmensen, Carsten Thomsen, Tron A Darvann, Christian von Buchwald, Jørgen Tranum-Jensen
Computed tomography (CT) images have been used in very few studies on distances to the ethmoidal arteries in the orbit. Most other studies have included direct measurements on cadavers and frequently quote the 24-12-6 mm rule to describe distances from the anterior lacrimal crest to the anterior and posterior ethmoidal foramina (AEF and PEF), optic canal (OC), respectively. However, the large interindividual variation of distances renders absolute values less applicable in a clinical setting. Preoperative measurements on CT images may provide more precise distances than absolute rules and thus lead to safer orbital surgery...
January 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29282698/elevated-surfactant-protein-levels-and-increased-flow-of-cerebrospinal-fluid-in-cranial-magnetic-resonance-imaging
#15
Stefan Schob, Alexander Weiß, Alexey Surov, Julia Dieckow, Cindy Richter, Mandy Pirlich, Diana Horvath-Rizea, Wolfgang Härtig, Karl-Titus Hoffmann, Matthias Krause, Ulf Quäschling
Surfactant proteins (SPs) are a multifunctional group of proteins, responsible for the regulation of rheological properties of body fluids, host defense, and cellular waste clearance. Their concentrations are changed in cerebrospinal fluid (CSF) of patients suffering from communicating hydrocephalus. Hydrocephalic conditions are accompanied by altered CSF flow dynamics; however, the association of CSF-SP concentrations and CSF flow has not yet been investigated. Hence, the aim of this study was to evaluate the association between SP concentrations in the CSF and marked CSF flow phenomena at different anatomical landmarks of CSF spaces...
December 27, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/29278458/osteologic-analysis-of-ethnic-differences-in-supernumerary-ethmoidal-foramina-implications-for-endoscopic-sinus-and-orbit-surgery
#16
Sarina K Mueller, Benjamin S Bleier
BACKGROUND: Knowledge of the position of the ethmoidal arteries is critical to enable safe endoscopic sinus and orbital surgery. The presence of a third or "middle" ethmoid variant has recently become more relevant as endoscopic intraconal surgery continues to advance. The purpose of this study was to quantify the presence of supernumerary (ie, over 2) ethmoid foramina in different ethnicities and genders. METHODS: Morphometric osteologic measurements were performed in 273 orbits...
December 26, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29276714/radiological-changes-in-the-cervical-spine-in-freshman-collegiate-sumo-wrestlers
#17
Yasuaki Nakagawa, Shogo Mukai, Kazufumi Minami, Yuji Hattori, Takashi Nakamura
Background: Sumo has long been a traditional sport in Japan and is rapidly attracting enthusiasts abroad. Sumo wrestling entails a risk of impact to the cervical spine during an initial charge. Few reports are available in the English-language literature regarding radiological changes in the cervical spine in sumo wrestlers. Purpose: To examine radiological changes in the cervical spine in freshmen collegiate sumo wrestlers. Study Design: Case series; Level of evidence, 4...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29250462/cranial-osteology-of-the-pampathere-holmesina-floridanus-xenarthra-cingulata-blancan-nalma-including-a-description-of-an-isolated-petrosal-bone
#18
Timothy J Gaudin, Lauren M Lyon
The present study entails descriptions of several well-preserved skulls from the pampathere species Holmesina floridanus, recovered from Pliocene localities in central Florida and housed in the collections of the Florida Museum of Natural History. Bone by bone descriptions have allowed detailed reconstructions of cranial morphology. Cranial foramina are described and illustrated in detail, and their contents inferred. The first ever description of an isolated pampathere petrosal is also included. Cranial osteology of Holmesina floridanus is compared to that of Pleistocene species of Holmesina from both North and South America (Holmesina septentrionalis, Holmesina occidentalis), as well as to the other well-known pampathere genera, to closely related taxa among glyptodonts (Propalaehoplophorus), and to extinct and extant armadillos (Proeutatus, Euphractus)...
2017: PeerJ
https://www.readbyqxmd.com/read/29195009/ontogeny-of-surface-texture-of-limb-bones-in-modern-aquatic-birds-and-applicability-of-textural-ageing
#19
Junya Watanabe
Despite its importance in various disciplines, a general method to assess ontogenetic ages of skeletal and fossil specimens has been lacking for birds. Although the textural ageing method was formulated to assess relative ontogenetic ages of specimens from inspection of bone surface textures, the exact correspondence of surface textures to ontogenetic stages has not yet been clear. In this study, bone surface textures of six major limb bones (humerus, ulna, carpometacarpus, femur, tibiotarsus, and tarsometatarsus) were described in postnatal ontogenies of four species of modern birds (Calonectris leucomelas, Phalacrocorax capillatus, Larus crassirostris, and Cerorhinca monocerata) from 14-28 individuals of known ontogenetic stages for each species...
December 1, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29191538/collet-sicard-syndrome-attributable-to-extramedullary-plasmacytoma-of-the-jugular-foramen
#20
Soliman Oushy, Christopher S Graffeo, Avital Perry, Jonathan M Morris, Matthew L Carlson, Jamie J Van Gompel
BACKGROUND: Collet-Sicard syndrome is a rare manifestation of skull base disease involving the jugular and hypoglossal foramina. We report the first case of Collet-Sicard attributable to extramedullary plasmacytoma-multiple myeloma (EP-MM), as well as the second case of EP-MM precipitating a jugular foramen syndrome (JFS)-spectrum disorder. CASE DESCRIPTION: A fifty-nine-year-old woman presented with 4-months of left aural fullness and pulsatile tenderness, positional vertigo, hoarseness, and dysphagia...
November 27, 2017: World Neurosurgery
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