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https://www.readbyqxmd.com/read/29310920/total-hip-arthroplasty-patients-with-fixed-spinopelvic-alignment-are-at-higher-risk-of-hip-dislocation
#1
Christina I Esposito, Kaitlin M Carroll, Peter K Sculco, Douglas E Padgett, Seth A Jerabek, David J Mayman
BACKGROUND: Sitting radiographs have been used as a pre-operative tool to plan patient-specific total hip arthroplasty (THA) component position that would improve hip stability. Previous work has demonstrated that spinal mobility may impact functional acetabular position when seated. We sought to determine whether patients who dislocate following THA have different sitting spinopelvic alignment or acetabular component orientation compared to patients who did not dislocate. METHODS: A consecutive series of 1000 patients underwent post-operative low-dose biplanar spine-to-ankle lateral radiographs in standing and sitting positions 1 year following THA...
December 13, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29290133/assessment-of-radiographic-and-clinical-outcomes-of-an-articulating-expandable-interbody-cage-in-minimally-invasive-transforaminal-lumbar-interbody-fusion-for-spondylolisthesis
#2
Lara W Massie, Hesham Mostafa Zakaria, Lonni R Schultz, Azam Basheer, Morenikeji Ayodele Buraimoh, Victor Chang
OBJECTIVE The inability to significantly improve sagittal parameters has been a limitation of minimally invasive surgery for transforaminal lumbar interbody fusion (MIS TLIF). Traditional cages have a limited capacity to restore lordosis. This study evaluates the use of a crescent-shaped articulating expandable cage (Altera) for MIS TLIF. METHODS This is a retrospective review of 1- and 2-level MIS TLIF. Radiographic outcomes included differences in segmental and lumbar lordosis, disc height, evidence of fusion, and any endplate violations...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29288031/prevalence-and-characteristics-of-myopic-degeneration-in-an-adult-chinese-american-population-the-chinese-american-eye-study
#3
Farzana Choudhury, Stacy M Meuer, Ronald Klein, Dandan Wang, Mina Torres, Xuejuan Jiang, Roberta McKean-Cowdin, Rohit Varma
PURPOSE: To characterize and provide population-based prevalence estimates of myopic degeneration (MD) among Chinese Americans, the fastest growing minority population in the United States in the last decade. DESIGN: Population-based, cross-sectional study. METHODS: 1523 Chinese American adults with myopia, aged 50 years and older, residing in the City of Monterey Park, California, underwent an interview and comprehensive eye exam, including subjective and objective refraction, and stereoscopic fundus photography...
December 26, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29247396/the-mechanism-in-junctional-failure-of-thoraco-lumbar-fusions-part-ii-analysis-of-a-series-of-pjk-after-thoraco-lumbar-fusion-to-determine-parameters-allowing-to-predict-the-risk-of-junctional-breakdown
#4
Antonio A Faundez, Jonathon Richards, Philippe Maxy, Rachel Price, Amélie Léglise, Jean-Charles Le Huec
PURPOSE: To identify risk factors, in 12 patients with junctional breakdown (JBD) after thoraco-sacral fusions and to test a software locating maximal bending moment on full spine EOS images. METHODS: Twelve patients underwent long fusions for lumbar degenerative pathologies. Preop EOS images were compared to first postop EOS showing JBD. Parameters analyzed were: spinopelvic parameters [pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), sagittal vertical axis (SVA), spinosacral angle (SSA), lordosis, and kyphosis], proximal junctional angle (PJA), odontoid-hip axis angle (ODHA), and CIA...
December 15, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29242987/a-twin-study-of-cilioretinal-arteries-tilted-discs-and-situs-inversus
#5
Alex J Baneke, Katie M Williams, Omar A Mahroo, Moin Mohamed, Christopher J Hammond
PURPOSE: To establish the prevalence and heritability of cilioretinal arteries (CRAs), tilted discs (TDs) and situs inversus (SI). METHODS: Fundus photos from the Twins UK Adult Twin registry twin database were analyzed: 1812 individuals, 526 complete monozygotic (MZ) twin pairs and 336 complete dizygotic (DZ) pairs. Images were assessed non-stereoscopically on a computer screen by the same ophthalmologist for presence of CRAs, TDs or SI. Prevalence figures, probandwise concordances and heritabilities were calculated...
December 14, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29197157/application-of-the-isnt-rules-on-retinal-nerve-fibre-layer-thickness-and-neuroretinal-rim-area-in-healthy-myopic-eyes
#6
Kunliang Qiu, Geng Wang, Xuehui Lu, Riping Zhang, Lixia Sun, Mingzhi Zhang
PURPOSE: We determined the applicability of inferior > superior > nasal > temporal (ISNT) rules on retinal nerve fibre layer (RNFL) thickness and rim area and evaluated the impact of various ocular factors on the performance of the ISNT rules in healthy myopic eyes. METHODS: A total of 138 eyes from 138 healthy myopic subjects were included in this cross-sectional observational study. The peripapillary RNFL and optic disc in each eye were imaged with Cirrus HD optical coherence tomography (OCT) and Heidelberg Retina Tomograph II (HRT2), respectively...
December 2, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/29120977/use-of-a-scan-ultrasound-and-optical-coherence-tomography-to-differentiate-papilledema-from-pseudopapilledema
#7
Roberto Saenz, Han Cheng, Thomas C Prager, Laura J Frishman, Rosa A Tang
SIGNIFICANCE: Differentiating papilledema from pseudopapilledema reflecting tilted/crowded optic discs or disc drusen is critical but can be challenging. Our study suggests that spectral-domain optical coherence tomography (OCT) peripapillary retinal nerve fiber layer thickness and retrobulbar optic nerve sheath diameter (ONSD) measured by A-scan ultrasound provide useful information when differentiating the two conditions. PURPOSE: To evaluate the use of A-scan ultrasound and spectral-domain OCT retinal nerve fiber layer thickness (RNFLT) in differentiating papilledema associated with idiopathic intracranial hypertension from pseudopapilledema...
November 9, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/29117008/topographic-relationship-between-optic-disc-torsion-and-%C3%A3-zone-peripapillary-atrophy-in-the-myopic-eyes-of-young-patients-with-glaucomatous-appearing-visual-field-defects
#8
Jiyun Lee, Jong Eun Lee, Junki Kwon, Joong Won Shin, Michael S Kook
PURPOSE: To assess the topographic correlation between optic disc torsion (ODT) and beta-zone peripapillary atrophy (β-PPA) in young patients with myopia and glaucomatous-appearing visual field defects (VFDs). PATIENTS AND METHODS: We consecutively recruited 110 eyes of 110 young patients with myopia and glaucomatous-appearing VFDs. Retinal nerve fiber layer (RNFL) and macular ganglion cell inner plexiform layer (mGCIPL) thicknesses were measured to compare between the groups with different ODT directions...
November 7, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29072008/-effect-of-nape-seven-needles-on-expression-of-dll-4-and-hes-1-in-cervical-intervertebral-disc-degeneration-rats
#9
Yan Lu, Qing-Si Shen, Meng Tian, Hong-Ling Jia, Yong-Chen Zhang
OBJECTIVE: To observe the effect of "Nape Seven Needles" on the expressions of Delta-like ligand 4 (Dll 4) and hairy and enhancer of split homolog 1(Hes 1) in cervical intervertebral disc degeneration(IVDD) rats, so as to explore its mechanism of deferring the degeneration of cervical intervertebral disc. METHODS: SD male rats were randomly divided into a normal group, a model group and a nape seven needles group (n=11 in each group). The IVDD model was established by static-dynamic imbalance method...
August 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29023585/correlations-between-local-peripapillary-choroidal-thickness-and-axial-length-optic-disc-tilt-and-papillo-macular-position-in-young-healthy-eyes
#10
Takehiro Yamashita, Taiji Sakamoto, Naoya Yoshihara, Hiroto Terasaki, Minoru Tanaka, Yuya Kii, Kumiko Nakao
Optical coherence tomography (OCT) has made it possible for clinicians to measure the peripapillary choroidal thickness (ppCT) noninvasively in various ocular diseases. However, the ocular factors associated with the ppCT have not been conclusively determined. The purpose of this study was to determine the relationship between the local ppCT and the axial length, optic disc tilt, and the angle of the papillo-macular position (PMP) in healthy eyes. This was a prospective, observational cross-sectional study of 119 right eyes of 119 healthy Japanese volunteers...
2017: PloS One
https://www.readbyqxmd.com/read/28987526/anterior-lumbar-sagittal-alignment-after-anterior-or-lateral-interbody-fusion
#11
M Afathi, F Zairi, P Devos, M Allaoui, P Marinho, D Chopin, R Assaker
PURPOSE: Anterior or lateral interbody fusion is a treatment option for lumbar disc disease. A segmental change occurs after such surgery. This study was designed to evaluate the changes in the lumbar regional alignment after a single or two-level standalone anterior or lateral interbody fusion (ALIF or LLIF). METHODS: Data from patients referred to our institution between March 2013 and November 2015 for standalone ALIF or LLIF for low-grade isthmic spondylolisthesis or degenerative discopathy were retrospectively included in our analysis...
December 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28960822/analysis-of-spino-pelvic-sagittal-alignment-in-young-chinese-patients-with-lumbar-disc-herniation
#12
Han Fei, Wei-Shi Li, Zhuo-Ran Sun, Qing-Wei Ma, Zhong-Qiang Chen
OBJECTIVE: Few studies have concentrated on the sagittal alignment of lumbar disc herniation (LDH), especially the parameters of the pelvis, and controversy exists about whether pelvic morphology is involved in the pathogenesis of LDH. The present study analyzed the characteristics of the sagittal alignment in young Chinese LDH patients and explored the impact of pelvic morphology on the pathogenesis of LDH. METHODS: A retrospective analysis was conducted on 100 young patients with LDH (69 men and 31 women, aged 18-35 years), and the clinical and imaging findings met the criteria for the diagnosis of LDH...
August 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28953681/magnetic-resonance-imaging-a-possible-alternative-to-a-standing-lateral-radiograph-for-evaluating-cervical-sagittal-alignment-in-patients-with-cervical-disc-herniation
#13
COMPARATIVE STUDY
Wei Liu, Jin Fan, Jianling Bai, Pengyu Tang, Jian Chen, Yongjun Luo, Kuai Zhou, Weihua Cai
BACKGROUND AND OBJECTIVES: Convincing evidence supporting the use of magnetic resonance imaging (MRI) as an effective tool for evaluating cervical sagittal alignment is lacking. This study aims to analyze the differences and correlations between cervical sagittal parameters on x-ray and MRI in patients with cervical disc herniation and to determine whether MRI could substitute for cervical x-ray for measurement of cervical sagittal parameters. METHODS: One hundred forty-three adults with cervical disc herniation were recruited...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28902338/confluent-endpoint-subthreshold-argon-laser-for-serous-macular-detachment-in-tilted-disc-syndrome-refractory-to-anti-vegf
#14
Maria Fernanda Abalem, Pedro Carlos Carricondo, Helen Nazareth Veloso Dos Santos, Rafael Garcia, Cynthia X Qian, John Helal, Eduardo Cunha de Souza, Walter Yukihiko Takahashi
A 70-year-old woman presented with 20/200 visual acuity in the right eye. Multimodal imaging revealed tilted disc syndrome (TDS) with macular serous detachment (MSD) and pigmentary changes at the temporal margin of the optic disc. Subretinal fluid persisted after three monthly intravitreal bevacizumab (Avastin; Genentech, South San Francisco, CA) injections and threshold focal laser photocoagulation. Subsequently, confluent subthreshold argon laser was applied over the entire area of retinal pigment epithelium (RPE) abnormalities, resulting in the resolution of subretinal fluid without recurrence through 3 years of follow-up...
September 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28894387/modic-changes-of-the-cervical-spine-t1-slope-and-its-impact-on-axial-neck-pain
#15
Jia Li, Shuhui Qin, Yongqian Li, Yong Shen
BACKGROUND: The purpose of the research was to evaluate cervical sagittal parameters on magnetic resonance imaging (MRI) in patients with Modic changes and its impact on axial neck pain. METHODS: This study consisted of 266 consecutive asymptomatic or symptomatic patients with Modic changes, whose average age was 50.9±12.6 years from January 2015 to December 2016. Cervical sagittal parameters included sagittal alignment of the cervical spine (SACS), T1 slope, thoracic inlet angle (TIA), and neck tilt (NT)...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28885088/progression-of-trunk-imbalance-in-adolescent-idiopathic-scoliosis-with-a-thoracolumbar-lumbar-curve-is-it-predictable-at-the-initial-visit
#16
Chang Ju Hwang, Choon Sung Lee, Dong-Ho Lee, Jae Hwan Cho
OBJECTIVE Progression of trunk imbalance is an important finding during follow-up of patients with adolescent idiopathic scoliosis (AIS). Nevertheless, no factors that predict progression of trunk imbalance have been identified. The purpose of this study was to identify parameters that predict progression of trunk imbalance in cases of AIS with a structural thoracolumbar/lumbar (TL/L) curve. METHODS This study included 105 patients with AIS and a structural TL/L curve who were followed up at an outpatient clinic...
November 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28860415/t2-relaxation-time-increases-in-lumbar-intervertebral-discs-after-21d-head-down-tilt-bed-rest
#17
T Koy, B Ganse, J Zange, J Rittweger, R Pohle-Fröhlich, P Fings-Meuthen, B Johannes, D Felsenberg, P Eysel, P M Bansmann, D L Belavý
OBJECTIVES: Spaceflight back pain and intervertebral disc (IVD) herniations cause problems in astronauts. Purpose of this study was to assess changes in T2-relaxation-time through MRI measurements before and after head-down tilt bed-rest, a spaceflight analog. METHODS: 8 men participated in the bed-rest study. Subjects remained in 6° head down tilt bed-rest in two campaigns of 21 days, and received a nutritional intervention (potassium bicarbonate 90 mmol/d) in a cross-over design...
September 1, 2017: Journal of Musculoskeletal & Neuronal Interactions
https://www.readbyqxmd.com/read/28835424/compressed-3d-and-2d-digital-images-versus-standard-3d-slide-film-for-the-evaluation-of-glaucomatous-optic-nerve-features
#18
Simrenjeet Sandhu, Chris Rudnisky, Sourabh Arora, Faazil Kassam, Gordon Douglas, Marianne C Edwards, Karin Verstraten, Beatrice Wong, Karim F Damji
SYNOPSIS: Clinicians can feel confident compressed three-dimensional digital (3DD) and two-dimensional digital (2DD) imaging evaluating important features of glaucomatous disc damage is comparable to the previous gold standard of stereoscopic slide film photography, supporting the use of digital imaging for teleglaucoma applications. BACKGROUND/AIMS: To compare the sensitivity and specificity of 3DD and 2DD photography with stereo slide film in detecting glaucomatous optic nerve head features...
August 23, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28821444/circumferential-fusion-a-comparative-analysis-between-anterior-lumbar-interbody-fusion-with-posterior-pedicle-screw-fixation-and-transforaminal-lumbar-interbody-fusion-for-l5-s1-isthmic-spondylolisthesis
#19
Erik Y Tye, Joseph E Tanenbaum, Andrea S Alonso, Roy Xiao, Michael P Steinmetz, Thomas E Mroz, Jason W Savage
BACKGROUND CONTEXT: Transforaminal lumbar interbody fusion (TLIF) or anterior lumbar interbody fusion with percutaneous pedicle screws (ALIFPS) offer significantly higher radiographic fusion rates than other fusion techniques for L5-S1 isthmic spondylolisthesis (IS). As it stands, there is a relative paucity of comparative data of the two techniques. PURPOSE: To define the clinical, radiographic, and financial differences between TLIF and ALIFPS for L5-S1 IS. DESIGN/SETTING: A retrospective cohort study conducted at a single tertiary care center...
August 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28760034/complete-anatomic-reduction-and-monosegmental-fusion-for-lumbar-spondylolisthesis-of-grade-ii-and-higher-use-of-the-minimally-invasive-rocking-technique
#20
Deshpande V Rajakumar, Akshay Hari, Murali Krishna, Ankit Sharma, Manjunatha Reddy
OBJECTIVE Different surgical approaches have been described for treatment of spondylolisthesis, including in situ fusions, reductions of various degrees, and inclusion of healthy adjacent segments into the fusion construct. To the authors' knowledge, there are only sparse reports describing consistent complete reduction and monosegmental transforaminal lumbar interbody fusion for spondylolisthesis using a minimally invasive technique. The authors assess the efficacy of this technique in the reduction of local deformity and correction of overall sagittal profile in single-level spondylolisthesis...
August 2017: Neurosurgical Focus
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