Results 81 to 90 of about 52,520 (266)

Tratamiento quirúrgico de fracturas toracolumbares por vía posterior con instrumentación y fusión bisegmentaria [PDF]

open access: yes, 2002
Analizamos de forma retrospectiva, los resultados clínico-radiológicos y funcionales de pacientes con fracturas vertebrales con y sin afección neurológica, intervenidos quirúrgicamente mediante instrumentación vertebral pedicular de los dos segmentos ...
Andrés González, José María   +5 more
core  

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

open access: yesThe Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe   +4 more
wiley   +1 more source

ASPECTS OF THE USE OF PROPENSITY SCORE MATCHING METHODS IN NEUROSURGERY

open access: yesColuna/Columna
Objective Observational studies and register data provide researchers with ample opportunities to obtain answers to questions that randomized controlled trials cannot answer for organizational or ethical reasons. One of the most common tools for solving
ALEKSANDR V. KRUTKO   +4 more
doaj   +1 more source

The skeleton of the green Iguana iguana (Squamata: Iguanidae) and its intraspecific morphological variation

open access: yesThe Anatomical Record, EarlyView.
Abstract The green iguana (Iguana iguana) is an iguanine lizard with herbivorous and arboreal habits, whose distribution spans through South America, Central America to the south of North America. Although the genus Iguana is well‐known, the species still lacks a comprehensive and up‐to‐date anatomical study, particularly addressing the axial skeleton,
Vieno Rosa   +2 more
wiley   +1 more source

IMPACT OF THE MIS-TLIF TECHNIQUE ON THE SPINOPELVIC PARAMETERS OF PATIENTS WITH LUMBAR ARTHRODESIS

open access: yesColuna/Columna
Objective: To evaluate the influence of the MIS-TLIF technique on the spinopelvic parameters of patients submitted to lumbar arthrodesis up to three levels for the treatment of vertebral degenerative conditions without deformity.
Cristiano Magalhães Menezes   +8 more
doaj   +1 more source

Resultados del tratamiento de la inestabilidad postdisectomia mediante artrodesis posterolateral lumbar [PDF]

open access: yes, 2003
El mecanismo fisiopatológico por el cual, tras una discectomia en columna lumbar, se puede producir inestabilidad en este segmento de la columna, ha sido establecido en múltiples estudios y se encuentra en la bibliografía actual.
Delgado Ramírez, Jorge A.   +2 more
core  

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato   +4 more
wiley   +1 more source

Novel mallet/holder manipulation technique for the reduction of anterior slippage in spondylolisthesis: A technical note

open access: yesWorld Neurosurgery: X
Background: Spondylolisthesis and spondylolysis are common causes of chronic low back pain. When conservative treatments fail, lumbar spinal fusion is often the recommended surgical option.
Emanuella M Brito   +4 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

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