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https://www.readbyqxmd.com/read/28207622/curve-characteristics-and-foraminal-dimensions-in-patients-with-adult-scoliosis-and-radiculopathy
#1
Andrew J Pugely, Zachary Ries, Gnanapradeep Gnanapragasam, Yubo Gao, Rachel Nash, Sergio A Mendoza-Lattes
STUDY DESIGN: Retrospective cohort study. OBJECTIVE: To demonstrate a correlation between radiculopathy symptoms, foraminal morphology, and curve types. SUMMARY OF BACKGROUND DATA: Patients with degenerative scoliosis frequently present with foraminal stenosis and radiculopathy, the origin of which is not well understood. METHODS: A total of 48 patients (384 foraminas) were included: 14 with low back pain (B); 16 with femoral nerve pain (F); and 18 with sciatic nerve pain (S)...
March 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28187067/the-morphology-and-possible-clinical-significance-of-the-radiating-extraforaminal-ligaments-at-the-l1-l5-levels
#2
Enyi Zhong, Qinghao Zhao, Benchao Shi, Xuefeng Zheng, Qinghui Zhao, Jinchuan Tan, Zihai Ding, Wenhua Huang
STUDY DESIGN: A dissection-based study of 10 fresh-frozen human cadavers. OBJECTIVE: The objective of this study was to identify and describe the radiating extraforaminal ligaments in the exit regions of the L1-L5 intervertebral foramina and to research their possible clinical significance. SUMMARY OF BACKGROUND DATA: The transforaminal ligaments at the L1-L5 intervertebral foramina have been well studied. However, detailed descriptions of the radiating extraforaminal ligaments at L1-L5 are lacking...
February 9, 2017: Spine
https://www.readbyqxmd.com/read/28183127/a-redescription-of-the-long-tailed-nesokia-i-nesokia-i-i-bunnii-i-and-designation-of-a-neotype-rodentia-muridae
#3
Boris Kryštufek, Omar F Al-Sheikhly, Rainer Hutterer
Long-tailed Nesokia, Nesokia bunnii, is a large rat restricted to the Mesopotamian marshes in Basra Province in southern Iraq. The species is known from five museum vouchers collected between March 1974 and January 1977. The type and the paratype, deposited in the Natural History Research Centre and Museum, University of Baghdad, Iraq, were destroyed during War on Iraq in 2003. By studying morphological details on three museum specimens in the Senckenberg Institution, Frankfurt a. M., Germany, we show that N...
January 4, 2017: Zootaxa
https://www.readbyqxmd.com/read/28179930/root-canal-morphology-of-mandibular-canine-in-an-iranian-population-a-cbct-assessment
#4
Ali Soleymani, Nafiseh Namaryan, Ehsan Moudi, Ali Gholinia
INTRODUCTION: The present study was conducted to assess the morphology of mandibular canines using cone-beam computed tomography (CBCT) in a north Iranian population. METHODS AND MATERIALS: For the morphological assessment of mandibular canines, 150 CBCT images taken from patients for different reasons were used. The mandibular canines were examined in sagittal, coronal and axial dimensions. The canal pattern, number of roots/canals, the tooth length, the orientation of the roots and the position of the apical foramina were evaluated and the effect of gender on each variable was assessed...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28170434/the-internal-cranial-anatomy-of-romundina-stellina-%C3%A3-rvig-1975-vertebrata-placodermi-acanthothoraci-and-the-origin-of-jawed-vertebrates-anatomical-atlas-of-a-primitive-gnathostome
#5
Vincent Dupret, Sophie Sanchez, Daniel Goujet, Per Erik Ahlberg
Placoderms are considered as the first jawed vertebrates and constitute a paraphyletic group in the stem-gnathostome grade. The acanthothoracid placoderms are among the phylogenetically most basal and morphologically primitive gnathostomes, but their neurocranial anatomy is poorly understood. Here we present a near-complete three-dimensional skull of Romundina stellina, a small Early Devonian acanthothoracid from the Canadian Arctic Archipelago, scanned with propagation phase contrast microtomography at a 7...
2017: PloS One
https://www.readbyqxmd.com/read/28167345/osteopetroses-emphasizing-potential-approaches-to-treatment
#6
Anna Teti, Michael J Econs
Osteopetroses are a heterogeneous group of rare genetic bone diseases sharing the common hallmarks of reduced osteoclast activity, increased bone mass and high bone fragility. Osteoclasts are bone resorbing cells that contribute to bone growth and renewal through the erosion of the mineralized matrix. Alongside the bone forming activity by osteoblasts, osteoclasts allow the skeleton to grow harmonically and maintain a healthy balance between bone resorption and formation. Osteoclast impairment in osteopetroses prevents bone renewal and deteriorates bone quality, causing atraumatic fractures...
February 3, 2017: Bone
https://www.readbyqxmd.com/read/28161897/persistent-extra-radicular-bacterial-biofilm-in-endodontically-treated-human-teeth-scanning-electron-microscopy-analysis-after-apical-surgery
#7
Bruno Carvalho de Sousa, Fábio de Almeida Gomes, Cláudio Maníglia Ferreira, Márcia Maria de Negreiros Pinto Rocha, Eduardo Bede Barros, Diana Santana de Albuquerque
Biofilms are the main cause of endodontic failures. Even the best executed endodontic treatment can fail, when the infection is resistant to treatment or when it is located in inaccessible areas, such as the external surface of the root apex. The purpose of this study was to evaluate, by scanning electron microscopy, the presence of bacterial biofilm on endodontically treated teeth considered clinical failures and suitable for apical surgery. Root apices were collected from 20 teeth undergoing apical surgery and one negative control and analyzed under SEM...
February 5, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28161236/minimally-invasive-decompression-surgery-for-lumbar-spinal-stenosis-with-degenerative-scoliosis-predictive-factors-of-radiographic-and-clinical-outcomes
#8
Akihito Minamide, Munehito Yoshida, Hiroki Iwahashi, Andrew K Simpson, Hiroshi Yamada, Hiroshi Hashizume, Yukihiro Nakagawa, Hiroshi Iwasaki, Shunji Tsutsui, Ryohei Kagotani, Mayumi Sonekatsu, Takahide Sasaki, Kazunori Shinto, Tsuyoshi Deguchi
There is ongoing controversy regarding the most appropriate surgical treatment for lumbar spinal stenosis (LSS) with concurrent degenerative lumbar scoliosis (DLS): decompression alone, decompression with limited spinal fusion, or long spinal fusion for deformity correction. The coexistence of degenerative stenosis and deformity is a common scenario; Nonetheless, selecting the appropriate surgical intervention requires thorough understanding of the patients clinical symptomatology as well as radiographic parameters...
February 1, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28154126/diagnostic-quality-of-3d-t2-space-compared-with-t2-fse-in-the-evaluation-of-cervical-spine-mri-anatomy
#9
F H Chokshi, G Sadigh, W Carpenter, J W Allen
BACKGROUND AND PURPOSE: Spinal anatomy has been variably investigated using 3D MRI. We aimed to compare the diagnostic quality of T2 sampling perfection with application-optimized contrasts by using flip angle evolution (SPACE) with T2-FSE sequences for visualization of cervical spine anatomy. We predicted that T2-SPACE will be equivalent or superior to T2-FSE for visibility of anatomic structures. MATERIALS AND METHODS: Adult patients undergoing cervical spine MR imaging with both T2-SPACE and T2-FSE sequences for radiculopathy or myelopathy between September 2014 and February 2015 were included...
February 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28153164/growth-changes-in-the-anterior-and-middle-cranial-bases-assessed-with-cone-beam-computed-tomography-in-adolescents
#10
Mona Afrand, Heesoo Oh, Carlos Flores-Mir, Manuel O Lagravère-Vich
INTRODUCTION: Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionally evaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in the anterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial bases with growth were evaluated by using the previously selected landmarks. METHODS: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153155/midpalatal-suture-density-ratio-a-novel-predictor-of-skeletal-response-to-rapid-maxillary-expansion
#11
Thorsten Grünheid, Chad E Larson, Brent E Larson
INTRODUCTION: During adolescence, increasing interdigitation of the midpalatal suture increases resistance to rapid maxillary expansion (RME); this decreases its skeletal effect. In this study, we aimed at determining whether a novel measure of midpalatal suture maturity, the midpalatal suture density ratio, can be used as a valid predictor of the skeletal response to RME. METHODS: The midpalatal suture density ratio, chronologic age, cervical vertebral maturation, and the stage of midpalatal suture maturation were assessed before treatment for 30 patients (ages, 12...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28150272/morphological-approach-of-the-sternal-foramen-an-anatomic-study-and-a-short-review-of-the-literature
#12
Nikolaos Gkantsinikoudis, Constantinos Chaniotakis, Grigorios Gkasdaris, Nikiforos Georgiou, Stylianos Kapetanakis
BACKGROUND: The sternal foramen constitutes a specific anatomic defect in sternum, indicating an impaired fusion of ossificated segments, which occurs either in an anatomical part of the sternum or in sternal joints. The aim of this article is to provide baseline statistical data about the variations of the sternal foramen, to present a short review of the relevant literature and to compare results with other studies and populations. MATERIALS AND METHODS: We review relevant literature, and we present data obtained from skeletal samples of known population and sex...
February 2, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28137547/repeat-intracranial-expansion-after-skull-re-growth-in-hyperostotic-disease-a-technical-note
#13
Timothy Wong, Yehuda Herschman, Nitesh V Patel, Tushar Patel, Simon Hanft
OBJECTIVE: and Importance: Camurati-Engelmann's disease (CED) is a rare, autosomal dominant genetic disorder resulting in hyperostosis of the long bones and skull.(1-4) Patients often develop cranial nerve dysfunction and increased intracranial pressure secondary to stenosis of nerve foramina and hyperostosis.(1-11) Surgical decompression may provide symptomatic relief in select patients; however, a small number of reports document the recurrence of symptoms due to bony regrowth.(1, 6, 7, 9-11) We present a patient who had previously been treated with bilateral frontal and parietal craniotomy that experienced recurrence of symptoms due to re-ossification of her cranial bones...
January 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28127865/potocki-shaffer-syndrome-in-a-child-without-intellectual-disability-the-role-of-phf21a-in-cognitive-function
#14
Caroline McCool, Adiaha Spinks-Franklin, Lenora M Noroski, Lorraine Potocki
Potocki-Shaffer syndrome is a contiguous gene deletion syndrome involving 11p11.2p12 and characterized by multiple exostoses, biparietal foramina, genitourinary anomalies in males, central nervous system abnormalities, intellectual disability, and craniofacial abnormalities. Current literature implicates haploinsufficiency of three genes (ALX4, EXT2, and PHF21A) in causing some of the cardinal features of PSS. We report a patient with multiple exostoses, biparietal foramina, and history of mild developmental delay...
January 27, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28116511/evaluation-of-changes-in-lumbar-neuroforaminal-dimensions-in-symptomatic-young-adults-using-positional-mri
#15
Zhiwei Ren, An Liu, Kaixiang Yang, Dalin Wang, Zorica Buser, Jeffrey C Wang
PURPOSE: To investigate the changes of lumbar neural foramina size during dynamic motion using positional MRI. METHODS: Two hundred and fifty neural foramina from 50 patients were analyzed. Lumbar foraminal height, width, and area parameters from L1 to S1 were evaluated for changes in extension, neutral, and flexion positions on T2 parasagittal positional MRI images, and were correlated to lumbar angular motion. One-way analysis of variance (ANOVA) and post hoc analysis were used to examine the differences between levels and positions...
January 23, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28109118/a-mandible-from-the-middle-pleistocene-hexian-site-and-its-significance-in-relation-to-the-variability-of-asian-homo-erectus
#16
Wu Liu, María Martinón-Torres, Yousuke Kaifu, Xiujie Wu, Reiko T Kono, Chun-Hsiang Chang, Pianpian Wei, Song Xing, Wanbo Huang, José María Bermúdez de Castro
OBJECTIVES: This study presents the first detailed morphological description and comparison of a Middle Pleistocene hominin mandibular fragment (PA 831) and associated teeth from the Hexian site in Eastern China. We aim to investigate where the Hexian mandible fits within the genus Homo variability in the light of an increased and better characterized Asian fossils record. METHODS: Comparative samples include Pleistocene Homo mandibles and teeth from Africa, Asia, and Europe, as well as earlier African hominins (Australopithecus and early Homo) and Holocene recent humans...
January 21, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28106505/pulp-vascularization-during-tooth-development-regeneration-and-therapy
#17
C Rombouts, T Giraud, C Jeanneau, I About
The pulp is a highly vascularized tissue situated in an inextensible environment surrounded by rigid dentin walls, with the apical foramina being the only access. The pulp vascular system is not only responsible for nutrient supply and waste removal but also contributes actively to the pulp inflammatory response and subsequent regeneration. This review discusses the underlying mechanisms of pulp vascularization during tooth development, regeneration, and therapeutic procedures, such as tissue engineering and tooth transplantation...
February 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28106044/root-canal-morphology-and-configuration-of-123-maxillary-second-molars-by-means-of-micro-ct
#18
Thomas Gerhard Wolf, Frank Paqué, Anja-Christin Woop, Brita Willershausen, Benjamín Briseño-Marroquín
The aim of this study was to investigate the root canal configuration, accessory canals and number of main foramina of 123 maxillary second molars by means of micro-computed tomography. The teeth were scanned and reproduced with 3D software imaging. The root canal configuration and number of main foramina were evaluated by means of a four-digit system. The morphological complexity of human maxillary second molars is depicted by the number of accessory and connecting canals. The most frequently observed root canal configurations in the mesiobuccal root were 2-2-2/2 (19...
January 20, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28097394/the-morphology-and-morphometry-of-the-fovea-capitis-femoris
#19
Vivek Perumal, Stephanie J Woodley, Helen D Nicholson
BACKGROUND: There is little published information on the anatomy of the fovea capitis femoris (FCF), the distal attachment site of the ligament of the head of femur (LHF). This study investigates the morphology of the FCF on dry bones in an attempt to answer some of the debate around the functional significance of the LHF. METHODS: The morphological and morphometric details of the FCF were analysed on 125 dry isolated femora (n = 125) from the Anatomy Museum, University of Otago, New Zealand...
January 17, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28097045/homeopathy-a-safe-much-less-expensive-non-invasive-viable-alternative-for-the-treatment-of-patients-suffering-from-loss-of-lumbar-lordosis
#20
Saiful Haque, Debarsi Das, Saugato Bhattacharya, Tathagato Sarkar, Anisur Rahman Khuda-Bukhsh
OBJECTIVES: Loss of lumbar lordosis causing pain and curvature of the vertebral skeleton to one side is a relatively uncommon disease. To our knowledge, successful treatment of loss of lumbar lordosis with any potentized homeopathic drug diluted above Avogadro's limit (that is, above a potency of 12C) has not been documented so far. In this communication, we intend to document a relatively rare case of loss of lumbar lordosis with osteophytic lippings, disc desiccation, and protrusion, causing a narrowing of secondary spinal canal and a bilateral neural foramina, leading to vertebral column curvature with acute pain in an adolescent boy...
December 2016: Journal of Pharmacopuncture
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