keyword
MENU ▼
Read by QxMD icon Read
search

Facet joint

keyword
https://www.readbyqxmd.com/read/28527584/a-combined-passive-and-active-musculoskeletal-model-study-to-estimate-l4-l5-load-sharing
#1
F Azari, N Arjmand, A Shirazi-Adl, T Rahimi-Moghaddam
A number of geometrically-detailed passive finite element (FE) models of the lumbar spine have been developed and validated under in vitro loading conditions. These models are devoid of muscles and thus cannot be directly used to simulate in vivo loading conditions acting on the lumbar joint structures or spinal implants. Gravity loads and muscle forces estimated by a trunk musculoskeletal (MS) model under twelve static activities were applied to a passive FE model of the L4-L5 segment to estimate load sharing among the joint structures (disc, ligaments, and facets) under simulated in vivo loading conditions...
May 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28525466/facet-preserving-technique-by-en-bloc-flavectomy-in-microscopic-posterior-decompression-surgery-for-lumbar-spinal-stenosis-semicircumferential-decompression-scd
#2
Yasushi Fujiwara, Hideki Manabe, Tadayoshi Sumida, Bunichiro Izumi, Kazuyoshi Nakanishi, Nobuhiro Tanaka, Nobuo Adachi
Posterior decompression surgery which enlarges the spinal canal in cases with lumbar spinal stenosis is the most fundamental technique in spine surgery, but controversy still remains for the exact technique. Because nerve roots run under the ventral side on the superior articular process (SAP), achieving both facet joint preservation and nerve root decompression is problematic. In conventional laminotomies or laminectomies, medial facetectomies are performed to decompress the nerve root, but it is ideal to preserve the facet joints completely for preserving joint stability...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28523617/one-pot-synthesis-of-lightly-doped-zn1-x-cu-x-o-and-au-zn1-x-cu-x-o-with-solar-light-photocatalytic-activity-in-liquid-phase
#3
Anis Fkiri, Marisa Rico Santacruz, Amine Mezni, Leila-Samia Smiri, Valérie Keller, Nicolas Keller
We report on the facile and low-temperature one-pot chemical synthesis of lightly doped Zn1-x Cu x O and hybrid Au-Zn1-x Cu x O photocatalysts with low Cu molar content (0 < x < 0.7%) using 1,3-propanediol polyol simultaneously as solvent, reducing and a stabilizing agent, without any final thermal treatment. The photocatalysts have been characterized by X-ray diffraction, N2 adsorption study, UV-vis diffuse reflectance spectroscopy, inductively coupled plasma optical emission spectroscopy, and transmission electron microscopy...
May 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28510474/increased-magnetic-resonance-imaging-signal-of-the-lateral-patellar-facet-cartilage-a-functional-marker-for-patellar-instability
#4
Anna L Falkowski, Carlo Camathias, Jon A Jacobson, Olaf Magerkurth
BACKGROUND: In the knee joint, predisposition for patellar instability can be assessed by an abnormal Insall-Salvati index, tibial tuberosity-trochlear groove (TTTG) distance, and abnormal shape of patella and trochlea. Given the complex anatomic features of the knee joint with varying positions of the patella during motion, the presence of a single or even a combination of these factors does not inevitably result in patellar instability. After trocheoplasty in patients with trochlear dysplasia, assessment of trochlear cartilage and subchondral bone is limited due to postoperative artifacts...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28508761/posterior-branches-of-lumbar-spinal-nerves-part-ii-lumbar-facet-syndrome-pathomechanism-symptomatology-and-diagnostic-work-up
#5
Katarzyna Kozera, Bogdan Ciszek, Paweł Szaro
Posterior branches of the lumbar spinal nerves are the anatomic substrate of pain in the lower back, sacrum and the gluteal area. Such pain may be associated with various pathologies which cause pain in the posterior branches of the lumbar spinal nerves due to entrapment, mechanical irritation or inflammatory reaction and/or degeneration. The posterior branches are of significant functional importance, which is related to the function of the structures they supply, including facet joints, which are the basic biomechanical units of the spine...
April 12, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28507779/spinal-osteotomies-indications-limits-and-pitfalls
#6
REVIEW
Kamil Cagri Kose, Omer Bozduman, Ali Erkan Yenigul, Servet Igrek
The aims of spinal deformity surgery are to achieve balance, relieve pain and prevent recurrence or worsening of the deformity.The main types of osteotomies are the Smith-Petersen osteotomy (SPO), pedicle subtraction osteotomy (PSO), bone-disc-bone osteotomy (BDBO) and vertebral column resection (VCR), in order of increasing complexity.SPO is a posterior column osteotomy in which the posterior ligaments and the facet joints are removed and correction is performed through the disc space. A mobile anterior disc is essential...
March 2017: EFORT Open Rev
https://www.readbyqxmd.com/read/28500930/micro-computed-tomography-scanning-electron-microscopy-and-energy-x-ray-spectroscopy-studies-of-facet-joint-degeneration-a-comparison-to-clinical-imaging
#7
Felix Goehre, Christopher Ludtka, Melanie Hamperl, Andrea Friedmann, Anja Straube, Thomas Mendel, Andreas Heilmann, Hans Jörg Meisel, Stefan Schwan
Segmental degeneration in the human lumbar spine affects both the intervertebral discs and facet joints. Facet joint degeneration not only affects the cartilage surface, but also alters the cellular properties of the cartilage tissue and the structure of the subchondral bone. The primary focus of this study is the investigation of these microstructural changes that are caused by facet joint degeneration. Microstructural analyses of degenerated facet joint samples, obtained from patients following operative lumbar interbody fusion, have not previously been extensively investigated...
May 1, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28499364/clinical-classification-in-low-back-pain-best-evidence-diagnostic-rules-based-on-systematic-reviews
#8
Tom Petersen, Mark Laslett, Carsten Juhl
BACKGROUND: Clinical examination findings are used in primary care to give an initial diagnosis to patients with low back pain and related leg symptoms. The purpose of this study was to develop best evidence Clinical Diagnostic Rules (CDR] for the identification of the most common patho-anatomical disorders in the lumbar spine; i.e. intervertebral discs, sacroiliac joints, facet joints, bone, muscles, nerve roots, muscles, peripheral nerve tissue, and central nervous system sensitization...
May 12, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28493041/the-sinus-tarsi-approach-in-displaced-intra-articular-calcaneal-fractures
#9
Jin Park, Jin Ho Che
INTRODUCTION: Although the extended lateral approach is typically considered the gold standard of treatment for intra-articular calcaneal fractures, a limited lateral approach may be a good alternative in select cases. METHODS: Forty-seven consecutive patients with intra-articular calcaneal fractures treated using the sinus tarsi approach between March 2010 and April 2015 were retrospectively reviewed. The functional outcomes [including arc range of motion, Visual Analog Scale (VAS) score, and the American Orthopedic Foot and Ankle Society ankle/hindfoot (AOFAS) score], bony outcomes (bony restoration and bony union), and complications were evaluated...
May 10, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28484409/studying-irony-detection-beyond-ironic-criticism-let-s-include-ironic-praise
#10
Richard Bruntsch, Willibald Ruch
Studies of irony detection have commonly used ironic criticisms (i.e., mock positive evaluation of negative circumstances) as stimulus materials. Another basic type of verbal irony, ironic praise (i.e., mock negative evaluation of positive circumstances) is largely absent from studies on individuals' aptitude to detect verbal irony. However, it can be argued that ironic praise needs to be considered in order to investigate the detection of irony in the variety of its facets. To explore whether the detection ironic praise has a benefit beyond ironic criticism, three studies were conducted...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28473948/purely-ligamentous-flexion-distraction-injury-in-a-five-year-old-child-treated-with-surgical-management
#11
Ryan M Schiedo, William Lavelle, Nathaniel R Ordway, Tarush Rustagi, Mike H Sun
Chance fractures by definition are a type of flexion-distraction injury with concomitant vertebral body fracture. Although uncommon in the pediatric population, they are associated with motor vehicle accidents and typically involve the thoraco-lumbar spine. Injury occurs when the spine rotates about a fixed axis, such as a lap belt. Our case reports the management of a five-year-old girl involved in a head-on collision who suffered a purely ligamentous flexion-distraction injury (Chance-type injury, without bone involvement) at the L2-L3 vertebral level...
April 3, 2017: Curēus
https://www.readbyqxmd.com/read/28472514/evaluating-atlantoaxial-dislocation-based-on-cartesian-coordinates-proposing-a-new-definition-and-its-impact-on-assessment-of-congenital-torticollis
#12
Jayesh Sardhara, Sanjay Behari, Pavaman Sindgikar, Arun Kumar Srivastava, Anant Mehrotra, Kuntal Kanti Das, Kamlesh Singh Bhaisora, Rabi N Sahu, Awadhesh K Jaiswal
BACKGROUND: Conventional 2-dimensional (2-D) definition of atlantoaxial dislocation (AAD) is inadequate for coexisting 3-D displacements. OBJECTIVE: To prospectively classify AAD and its related abnormalities along 3 Cartesian coordinates and assess their association with torticollis. METHODS: One hundred and fifty-four patients with congenital AAD were prospectively classified according to their C1-2 displacement along 3 Cartesian coordinates utilizing 3-D multiplanar CT...
May 3, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28469263/estrogen-deficiency-accelerates-lumbar-facet-joints-arthritis
#13
Hao Chen, Hai Zhu, Kai Zhang, Kangwu Chen, Huilin Yang
Dramatic increase in the prevalence of lumbar facet joint (LFJ) arthritis in women around the age of menopause indicates a protective role for estrogen in LFJ arthritis. To date, there is no evidence for this indication and the mechanism of such an effect remains poorly understood. In this study, ovariectomized (OVX) mice were used to mimic the estrogen-deficient status of post-menopausal women. Micro-CT and immunohistochemistry was employed to assess the morphological and molecular changes in ovariectomy-induced LFJ arthritis...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28467655/microcalcification-of-lumbar-spine-intervertebral-discs-and-facet-joints-is-associated-with-cartilage-degeneration-but-differs-in-prevalence-and-its-relation-to-age
#14
Thelonius Hawellek, Jan Hubert, Sandra Hischke, Tim Rolvien, Matthias Krause, Klaus Püschel, Wolfgang Rüther, Andreas Niemeier
Cartilage calcification (CC) is associated with degeneration in non-vertebral joints, but little is known about CC and lumbar vertebral joints. The goal of this study was to analyze the prevalence of CC in lumbar facet joints (FJ) and intervertebral discs (IVD) and its relation to cartilage degeneration and age in a non-selected cohort of the general population. The segment L4/5 of 85 consecutive donors (mean age 61.9 years) was analyzed by high-resolution imaging digital-contact radiography (DCR). Quantification was achieved by measuring CC in % of total cartilage area...
May 3, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28465193/clinical-outcomes-of-proximal-row-carpectomy-by-preoperative-midcarpal-joint-morphological-classification-viegas-type-i-versus-type-ii
#15
A Toffoli, H Lenoir, C Lazerges, B Coulet, M Chammas
The midcarpal joint can be classified into two anatomical types - Viegas type I and Viegas type II - based on the absence or presence of a medial facet for the hamate on the lunate (lunohamate facet). Type I is associated with a round capitate shape, which theoretically allows better congruence with the lunate fossa of the distal radius following proximal row carpectomy (PRC). This morphological feature has never been considered as a predictive factor of clinical outcome for this surgical procedure. This study aimed to compare the clinical and radiological outcomes of the two Viegas types following PRC...
February 28, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28463696/spinal-fusion-without-instrumentation-experimental-animal-study
#16
Sandra Reitmaier, Julian Schuelke, Hendrik Schmidt, David Volkheimer, Anita Ignatius, Hans-Joachim Wilke
BACKGROUND: The number and cost of instrumented spinal fusion surgeries have increased rapidly, primarily for the treatment of lumbar segmental instabilities. However, what if the organism itself is able to restore segmental stability over time? This large-animal study using sheep aimed to investigate whether the reparative response after destabilization via facetectomy and nucleotomy without instrumentation can effectively fuse the spinal segment comparable to instrumented standard fusion surgery...
April 25, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28451505/facet-effusion-without-radiographic-instability-has-no-effect-on-the-outcome-of-minimally-invasive-decompression-surgery
#17
Koji Tamai, Minori Kato, Sadahiko Konishi, Akira Matsumura, Kazunori Hayashi, Hiroaki Nakamura
STUDY DESIGN: Retrospective cohort study. OBJECTIVE: Lumbar segmental instability is a key factor determining whether decompression alone or decompression and fusion surgery is required to treat lumbar spinal stenosis (LSS). Some recent reports have suggested that facet joint effusion is correlated with spinal segmental instability. The aim of this study is to report the effect of facet effusion without radiographic segmental instability on the outcome of less-invasive decompression surgery for LSS...
February 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28448708/-wrist-x-ray-for-analysis-of-the-articular-surface-of-distal-radius
#18
E Vergara-Amador, R Penagos, E Pinilla
In the distal radius fracture requires radiographic views that allow you to see the articular surface without interposition. The objective was to determine whether lateral radiographic projections 7 and 22° improve the analysis of this surface. METHOD: Case series study with radiographs of healthy and operated patients, in order to identify the lunate and scaphoid facets in lateral and anteroposterior projections. Qualitative analysis was made on the radiographs of the distal radius with wedges of 7 and 22° in the lateral views and 11° in the anteroposterior view...
September 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28443174/clinical-and-radiological-outcomes-after-microscopic-bilateral-decompression-via-a-unilateral-approach-for-degenerative-lumbar-disease-minimum-5-year-follow-up
#19
Sho Dohzono, Hiromitsu Toyoda, Akira Matsumura, Hidetomi Terai, Akinobu Suzuki, Hiroaki Nakamura
STUDY DESIGN: A retrospective study. PURPOSE: To assess postoperative bone regrowth at surgical sites after lumbar decompression with >5 years of follow-up. Postoperative preservation of facet joints and segmental spinal instability following surgery were also evaluated. OVERVIEW OF LITERATURE: Previous reports have documented bone regrowth after conventional laminectomy or laminotomy and several factors associated with new bone formation...
April 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28443169/radiographic-analysis-of-the-lumbosacral-juncture-is-there-a-critical-sacral-angle-for-total-disc-replacement
#20
Rattalerk Arunakul, Melodie Metzger, Linda Kanim, Hyun Bae, Michael Kropf, Rick Delamarter
STUDY DESIGN: Retrospective review of a patient cohort through a prospective study. PURPOSE: To determine whether there are correlations between radiographic measurements, including sacral slope (SS) and pelvic incidence (PI), and self-reported clinical outcomes among single-level L5/S1 ProDisc-L patients. OVERVIEW OF LITERATURE: The lumbosacral juncture presents unique biomechanical challenges with respect to artificial disc replacement (ADR) because of its orientation and consequential shear loading...
April 2017: Asian Spine Journal
keyword
keyword
22140
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"