Results 51 to 60 of about 68,828 (263)

The Evaluation and Observation of “Hidden” Hypertrophy of Cervical Ligamentum Flavum, Cervical Canal, and Related Factors Using Kinetic Magnetic Resonance Imaging

open access: yesGlobal Spine Journal, 2016
Study Design Retrospective cohort study. Objective The objective was to measure the change of flavum ligament diameter during positional changes of the cervical spine using kinetic magnetic resonance imaging (MRI) and to examine the correlational ...
Cheng Zeng   +6 more
doaj   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

open access: yesThe Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro   +7 more
wiley   +1 more source

Nasal soft‐tissue anatomy of Triceratops and other horned dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract Although ceratopsid dinosaurs possess a characteristically hypertrophied narial region, soft‐tissue anatomy associated with such a skeletal structure and their biological significance remain poorly understood. The present study provides the first comprehensive hypothesis on the soft‐tissue anatomy in the ceratopsid rostrum based on the Extant ...
Seishiro Tada   +5 more
wiley   +1 more source

Developmental Lumbar Spinal Canal Stenosis and Severity of Radiculopathy

open access: yesThe Annals of African Surgery, 2019
Background: The severity of radiculopathy is varied and may not concur with MRI findings. Large disc bulges may elicit fewer symptoms than smaller bulges. This was postulated to be due to the size of the canal.
Muthuuri Jamlick
doaj  

The Usefulness of Dual-Layer Spectral Computed Tomography for Myelography: A Case Report and Review of the Literature

open access: yesCase Reports in Orthopedics, 2018
We describe a case of lumbar stenosis in which retrospective spectral analysis using dual-layer spectral detector computed tomography (CT) had the ability to expand the evaluable region in the spinal canal.
Yuji Iyama   +4 more
doaj   +1 more source

Over the edge: Empirical evidence for the cliff‐edge model of obstetric selection

open access: yesThe Anatomical Record, EarlyView.
Abstract The cliff‐edge model of obstetric selection maintains that larger neonates and smaller birth canals confer a positive selective advantage until labor becomes obstructed and vaginal delivery is no longer possible, eliciting an abrupt reduction in fitness.
Laura M. Watson   +6 more
wiley   +1 more source

Development of Lumbar Spinal Stenosis Caused by Lumbar Vertebral Compression Fracture

open access: yesTürk Osteoporoz Dergisi, 2004
Spinal stenosis is a narrowing of the spinal canal by a combination of bone and soft tissues, which causes mechanical compression of spinal nerve roots.Diagnosis is made by computerized tomography, myelography, or magnetic resonance (MR) imaging. The aim
Hidayet Sarı   +2 more
doaj  

Clinical features of ligamentosis in lumbar spinal stenosis in patients of different agе

open access: yesUkrainian Neurosurgical Journal, 2012
Introduction. Ligamentosis of lumbar spinal canal are rare and not well investigated pathology.Materials and methods. From our patients with lumbar spinal stenosis we took that, which had changes in spinal ligamentsResults.
Yuriy Pedachenko, Elena Krasilenko
doaj   +1 more source

A second species of non‐crocodyliform crocodylomorph from the Late Triassic fissure deposits of southwestern UK: Implications for locomotory ecological diversity in Saltoposuchidae

open access: yesThe Anatomical Record, EarlyView.
Abstract The Late Triassic–Early Jurassic fissures of the Bristol Channel area (southwest England and south Wales) are renowned for their diverse vertebrate faunas. These assemblages have yielded an array of predominantly small‐bodied forms that are crucial to our understanding of the early evolution of several major tetrapod clades.
Ewan H. Bodenham   +4 more
wiley   +1 more source

Cervical spinal canal narrowing and cervical neurologi-cal injuries

open access: yesChinese Journal of Traumatology, 2012
【Abstract】Cervical spinal canal narrowing can lead to injury of the spinal cord and neurological symptoms in-cluding neck pain, headache, weakness and parasthesisas.
ZHANG Ling   +5 more
doaj  

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