29,278 results match your criteria anterior segment


The Incidence of Adjacent Segment Pathology Following Cervical Disc Arthroplasty Compared to Anterior Cervical Discectomy and Fusion: A Systematic Review and Meta-Analysis of Randomized Clinical Trials.

World Neurosurg 2022 Jan 24. Epub 2022 Jan 24.

Texas Spine Consultants, Department of Spine Research, 17051 Dallas Pkwy Suite 400, Addison, TX 75001.

Objective: The aim of this study was to assess rates of adjacent segment degeneration (ASDeg), adjacent segment disease (ASDis), and reoperation rates due to adjacent segment pathology in patients who have undergone anterior cervical discectomy and fusion (ACDF) versus cervical disc arthroplasty (CDA).

Methods: A comprehensive search of randomized controlled trials was performed in PubMed from 2012 to 2019. Relevant studies included were assessed for quality using the Cochrane Beck Review Group guidelines. Read More

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January 2022

Corneal thickness and anterior chamber depth of the normal adult horse as measured by ultrasound biomicroscopy.

Vet Ophthalmol 2022 Jan 27. Epub 2022 Jan 27.

Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, California, USA.

Objective: To determine corneal thickness (CT) and axial anterior chamber depth (ACD) using ultrasound biomicroscopy (UBM) in normal adult horses. To compare corneal thickness measurements between UBM and ultrasonic pachymetry.

Animals Studied: Sixty eyes of 30 healthy adult horses aged 8-24 years. Read More

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January 2022

Age- and sex-related differences in the measures of anterior segment parameters in a myopic clinical sample using Pentacam Scheimpflug tomography.

Int Ophthalmol 2022 Jan 27. Epub 2022 Jan 27.

School of Optometry and Vision Science, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia.

Purpose: To assess age-and sex-related differences of anterior segment parameters in a myopic clinical sample.

Methods: This clinic-based retrospective study involved eligible subjects grouped into myopia (i.e. Read More

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January 2022

Angioplasty of Anomalous Coronaries Arising from the Opposite Sinus with an Interarterial Course, is it Safe?

J Saudi Heart Assoc 2021 12;33(4):296-305. Epub 2021 Nov 12.

Cardiology Department, Tahar Sfar Hospital, Mahdia, Tunisia.

Background: The coronary artery with an interarterial course CAIAC is the most threatening coronary anomaly, especially if it concerns the left coronary. Percutaneous coronary intervention PCI is scarcely described given its low prevalence and lack of long-term outcome data. Therefore, we assessed through this case series the feasibility and safety of PCI in this population. Read More

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November 2021

Acute External Iliac Artery Occlusion as an Uncommon Complication Encountered during Coronary Angiography.

J Tehran Heart Cent 2021 Jan;16(1):45-46

Department of Cardiology, Sultan Abdülhamid Han Training and Research Hospital, University of Health Sciences, Istanbul, Turkey.

A 40-year-old female patient presented to our cardiology department with typical angina of 1 month's duration. The patient was on a combination of valsartan and hydrochlorothiazide for the treatment of hypertension. Electrocardiography showed a normal sinus rhythm with T-wave negativity in the anterior precordial leads. Read More

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January 2021

Pre-Descemetic Placement of Intracorneal Ring Segments for Keratoconus after Mechanical Implantation.

Case Rep Ophthalmol 2021 Sep-Dec;12(3):940-943. Epub 2021 Dec 2.

Department of Ophthalmology, University of Basel, Basel, Switzerland.

We report the case of a 23-year-old male who was referred to our clinic for a routine follow-up examination. The patient was treated for keratoconus 3 years ago in Colombia, where intracorneal ring segments were implanted mechanically in both eyes to improve his visual acuity. Surprisingly, we discovered a pre-descemetic placement of intracorneal ring segments, which could lead to potential complications, under circumstances. Read More

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December 2021

Intraocular Lens Position and Anterior Chamber Parameters Evaluation After Nd:YAG Laser Posterior Capsulotomy for Posterior Capsular Opacification Using Anterior Segment Swept-Source Optical Coherence Tomography.

Clin Ophthalmol 2022 18;16:153-159. Epub 2022 Jan 18.

Ophthalmology Department, Hospital de Braga, Braga, Portugal.

Purpose: To evaluate the effect of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser capsulotomy on intraocular lens (IOL) position and anterior segment parameters with a new swept-source anterior segment optical coherence tomography (AS-OCT) device (Anterion, Heidelberg Engineering GmbH).

Patients And Methods: A total of 50 eyes from 50 consecutive patients were included. All patients had visually significant posterior capsular opacification (PCO) after uneventful phacoemulsification surgery with manual capsulorhexis and single-piece C-loop acrylic IOL implantation (AcrySof SA60AT) and were treated with Nd:YAG laser. Read More

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January 2022

Effectiveness of a telemedicine program for triage and diagnosis of emergent ophthalmic conditions.

Eye (Lond) 2022 Jan 26. Epub 2022 Jan 26.

Department of Ophthalmology, Massachusetts Eye & Ear, Harvard Medical School, Boston, MA, USA.

Background: To study the utility of a teleophthalmology program to diagnose and triage common ophthalmic complaints presenting to an ophthalmic emergency room.

Methods: Prospective, observational study of 258 eyes of 129 patients presenting to the Massachusetts Eye and Ear Infirmary Emergency Ward (MEE EW) who completed a questionnaire to gather chief complaint (CC), history of present illness, and medical history. Anterior and posterior segment photographs were collected via iPhone 5 C camera and a Canon non-mydriatic fundus camera, respectively. Read More

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January 2022

Resolution of coronary arteritis following tuberculosis treatment.

J Clin Tuberc Other Mycobact Dis 2022 Feb 19;26:100295. Epub 2022 Jan 19.

Division of Rheumatology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil.

Background: Coronary artery aneurysm (CAA) in an uncommon condition usually associated with atherosclerosis, but systemic vasculitides constitute important differential diagnoses. A less recognized cause of CAA, tuberculosis (TB) has also been noted to occur simultaneously in patients with such vascular abnormalities.

Case Report: A 60-year-old female presented to the Emergency Department with a non-ST segment elevation myocardial infarction. Read More

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February 2022

Recovery of Visual Loss Following Internal Trapping of Anterior Cerebral Artery (A1 Segment) for Partially Thrombosed Large Anterior Communicating Artery Aneurysm: A Case Report.

NMC Case Rep J 2021 19;8(1):787-792. Epub 2021 Nov 19.

Department of Neurosurgery, Tokyo Medical and Dental University, Tokyo, Japan.

A 60-year-old woman, who experienced progressive right visual loss, was diagnosed with an unruptured large cerebral aneurysm. Magnetic resonance imaging (MRI) and angiography revealed a large partially thrombosed anterior communicating artery (Acom) aneurysm. The aneurysmal neck was located at the junction of the left A1-A2 segments, and the aneurysmal dome communicated with the right A1-A2 junction by the Acom. Read More

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November 2021

A Ruptured Anterior Communicating Artery Aneurysm with Infra-optic Course of the Anterior Cerebral Artery: A Case Report and a Short Review.

NMC Case Rep J 2021 7;8(1):465-472. Epub 2021 Aug 7.

Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan.

Infra-optic course of the anterior cerebral artery (IOA) is rare and approximately 55 cases of this anomaly have been described. We present a case of a ruptured anterior communicating artery (ACoA) aneurysm arising at the junction between the left IOA and the bilateral A2 segments, at which the right A1 segment was absent. One of the recurrent arteries of Heubner branched off directly from the aneurysmal dome, and was obstructed at aneurysmal neck clipping via an anterior interhemispheric (AIH) approach. Read More

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Current Concepts of Cervical Disc Arthroplasty.

Int J Spine Surg 2021 Dec;15(6):1162-1171

Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.

Background: Radiculopathy and myelopathy resulting from degenerative disc disease are currently treated with anterior cervical discectomy and fusion (ACDF), but there is a high incidence of adjacent segment disease after treatment.

Methods: With recent advances in cervical disc arthroplasty (CDA), we performed a review of published articles, examining the latest clinical data on the efficacy, safety, and complications of the current cervical disc devices on the market. We focused on the long-term follow up data of single-level, multi-level, and hybrid CDA as compared to ACDF, paying close attention to the newest cervical disc devices. Read More

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December 2021

Management of Symptomatic Cervical Spine Pseudarthrosis: A Suggested Algorithm for Surgical Planning.

Int J Spine Surg 2021 Dec;15(6):1155-1161

Department of Spine Surgery, Zentralklinik Bad Berka, Germany.

Background: The clinical outcome of anterior cervical decompression and fusion (ACDF) correlates with fusion rates. There is a debate about how patients with symptomatic pseudarthrosis should be managed. In this study, a treatment plan is developed based on the surgical results of 95 patients and the recent literature. Read More

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December 2021

Iridocorneal endothelial syndrome: Descemet's membrane-endothelium complex assessed by high-resolution anterior segment optical coherence tomography.

J Fr Ophtalmol 2022 Jan 22. Epub 2022 Jan 22.

Ophthalmology Department, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron 119-129, 08035 Barcelona, Spain.

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January 2022

[Efficacy observation of long-segment pedicle screw reduction and internal fixation combined with kyphoplasty in the treatment of stage Ⅲ reducible kummell disease].

Zhonghua Wai Ke Za Zhi 2022 Mar 1;60(3):230-236. Epub 2022 Mar 1.

Department of Orthopedics,Zhejiang Hospital,Zhejiang University College of Medicine,Hangzhou 310030,China.

To investigate the clinical efficacy of long-segment pedicle screw reduction and internal fixation combined with kyphoplasty in the treatment of stage Ⅲ reducible Kummell disease. The clinical data of 32 patients with stage Ⅲ reducible Kummell disease treated at the Department of Orthopedics, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine from January 2012 to March 2017 were analyzed retrospectively.There were 7 males and 25 females,aged (71. Read More

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Occurrence of Oxidative Stress and Premature Senescence in the Anterior Segment of Acute Primary Angle-Closure Eyes.

Invest Ophthalmol Vis Sci 2022 Jan;63(1):34

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China.

Purpose: To explore whether oxidative stress and premature senescence occur in the anterior segment of acute primary angle-closure (APAC) eyes after increased intraocular pressure.

Methods: The eye samples of 21 APAC patients, 22 age-related cataract patients, and 10 healthy donors were included. Aqueous humor (AqH), iris, and anterior lens capsule samples were collected. Read More

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January 2022

Multiple cerebral arterial variations incidentally detected by magnetic resonance angiography: a case report.

Surg Radiol Anat 2022 Jan 24. Epub 2022 Jan 24.

Department of Neuroendovascular Therapy, Saitama Sekishinkai Hospital, Saitama, Japan.

We herein report a case of multiple variations, including (1) anterior communicating artery duplication, (2) accessory anterior cerebral artery (ACA), (3) distal origin right accessory middle cerebral artery (MCA) with bifurcation, (4) proximal origin left accessory MCA with bifurcation, (5) right superior cerebellar artery (SCA) duplication, and (6) left SCA early bifurcation. These variations were found incidentally by magnetic resonance (MR) angiography. Volume-rendering images of MR angiography were more useful than maximum-intensity-projection images for identifying these variations, especially bilateral accessory MCAs, which were superimposed with the A1 segment of the ACAs and the M1 segment of the MCAs. Read More

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January 2022

Bilateral acute macular neuroretinopathy in a young woman after the first dose of Oxford-AstraZeneca COVID-19 vaccine.

Am J Ophthalmol Case Rep 2022 Jan 20:101281. Epub 2022 Jan 20.

Department of Ophthalmology, Dijon University Hospital, Dijon, France.

Purpose: To report a case of bilateral acute macular neuroretinopathy following the first dose of Oxford-AstraZeneca COVID-19 (coronavirus disease 2019) vaccine in a young, Caucasian, and healthy woman.

Observations: A 25-year-old Caucasian female patient presented to the ophthalmology department of Dijon University Hospital with a 3-week history of black spots and paracentral scotoma in both eyes. She had no past medical history and was using the combined estrogen-progestin oral contraceptive (COC). Read More

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January 2022

Myocardial bridging - Sudden unexpected death of a young girl: A case report.

Indian J Pathol Microbiol 2022 Jan-Mar;65(1):157-159

Department of Pathology, PGIMER, ABVIMS, RML Hospital, New Delhi, India.

Myocardial bridging (MB) is a relatively uncommon congenital anomaly where a segment of the coronary artery dips inside the myocardium and takes a tunneled course under a bridge of the myocardium. This leads to the compression of the coronary artery during systole resulting in hemodynamic changes and their clinical manifestations. However, it is an incidental finding but can present with multiple complications like myocardial ischemia, infarction, and sudden death, primarily when associated with other risk factors like left ventricular hypertrophy of the heart. Read More

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January 2022

The effects of pathology and one-level versus two-level arthrodesis on cervical spine intervertebral helical axis of motion.

J Biomech 2022 Jan 17;133:110960. Epub 2022 Jan 17.

Department of Orthopaedic Surgery, University of Pittsburgh, United States.

The etiology of adjacent segment disease after anterior cervical discectomy and fusion (ACDF) remains controversial. Range of motion (ROM) is typically used to infer the effects of arthrodesis on adjacent segment motion following ACDF, however, ROM only measures the total amount of motion. In contrast, the helical axis of motion (HAM) quantifies how the motion occurs and may provide additional insight into the etiology of adjacent segment pathology. Read More

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January 2022

Convergence Insufficiency as a Cause of Postoperative Acquired Diplopia after Successful Motor Alignment Post Strabismus Surgery.

J Binocul Vis Ocul Motil 2022 Jan 24:1-3. Epub 2022 Jan 24.

Cornea and Anterior Segment Services, MGM Eye Institute, Raipur, India.

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January 2022

Flow diversion in anterior cerebral artery aneurysms.

Brain Circ 2021 Oct-Dec;7(4):247-252. Epub 2021 Dec 21.

Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, New York, USA.

Introduction: Anterior cerebral artery (ACA) aneurysms are commonly encountered in clinical practice but can be challenging to treat. Flow diversion is a viable treatment in this population.

Methods: We retrospectively evaluated patients treated at our center from May 2017 to December 2020 who underwent flow diversion for an ACA aneurysm at or distal to the anterior communicating artery (ACOM). Read More

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December 2021

Roles of Hox Genes in the Assembly of Neuromuscular Networks and Behavior.

Front Cell Dev Biol 2021 7;9:786993. Epub 2022 Jan 7.

Laboratory of Drosophila Neural Development, Centre for DNA Fingerprinting and Diagnostics (CDFD), Hyderabad, India.

Hox genes have been known for specifying the anterior-posterior axis (AP) in bilaterian body plans. Studies in vertebrates have shown their importance in developing region-specific neural circuitry and diversifying motor neuron pools. In , they are instrumental for segment-specific neurogenesis and myogenesis early in development. Read More

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January 2022

Application of indocyanine green injection guided by electromagnetic navigation bronchoscopy in localization of pulmonary nodules.

Transl Lung Cancer Res 2021 Dec;10(12):4414-4422

Department of Thoracic Surgery, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.

Background: Accurate localization of pulmonary nodules becomes a crucial step in diagnosis and treatment. However, the efficacy and accuracy of electromagnetic navigation bronchoscopy (ENB)-guided localization with indocyanine green (ICG) injection for video-assisted thoracoscopic surgery (VATS) lung resection remain unclear.

Methods: A retrospective study was performed that patients who had small pulmonary nodules and underwent lung resection after ENB-guided localization were included from Oct 2018 to Mar 2021. Read More

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December 2021

Roadmap Guided Direct Percutaneous Vertebral Artery Puncture for Mechanical Thrombectomy of Acute Basilar Artery Occlusion: A Technical Case Report and Review of the Literature.

Front Neurol 2021 6;12:789347. Epub 2022 Jan 6.

Institute of Neuroradiology, Charité - Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany.

Access techniques for mechanical thrombectomy normally include percutaneous puncture of the common femoral or, more recently, the radial artery. Although target vessel catheterization may frequently not be devoid of difficulties both routes, the vast majority of mechanical thrombectomy (MT) cases can be successfully managed. However, in a significant minority of cases, a stable target vessel access cannot be reached resulting in futile recanalization procedures and detrimental outcomes for the patients. Read More

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January 2022

Ocular parameters changes following phacoemulsification in pseudoexfoliative eyes; a case-control study.

J Cataract Refract Surg 2022 Jan 18. Epub 2022 Jan 18.

2 Ophthalmology Department, Aristotle University of Thessaloniki, Greece Health Center of Neapolis, Thessaloniki, Greece Queen Victoria Hospital NHS Foundation Trust, London, United Kingdom.

Purpose: To assess changes of angle morphometric parameters, anterior chamber depth (ACD), intra-ocular pressure (IOP) and endothelial cell density (ECD) following uneventful phacoemulsification in eyes with pseudoexfoliation syndrome (PEX) compared to eyes without PEX. The impact of these changes on effective lens position and postoperative refraction were also evaluated.

Setting: Papageorgiou hospital, Thessaloniki, Greece. Read More

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January 2022

Pre- and Post-Surgical Microspherophakia Anterior-Segment OCT.

Ophthalmol Glaucoma 2022 Jan-Feb;5(1):31

Ophthalmo-Pediatric Department, Fondation Ophtalmologique Adolphe de Rothschild, Paris, France.

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September 2021

Anterior Segment Parameters after Uveitic Cataract Surgery: A Prospective Study with 1-Year Results.

Photodiagnosis Photodyn Ther 2022 Jan 19:102736. Epub 2022 Jan 19.

Ophthalmology, Ataturk Training and Research Hospital, Izmir, Turkey. Electronic address:

Purpose: To determine the changes in anterior segment parameters in uveitic patients undergoing uncomplicated cataract surgery.

Methods: The best corrected visual acuity (BCVA), intraocular pressure (IOP), central corneal thickness (CCT), anterior chamber angle (ACA), anterior chamber depth (ACD), and axial length (AXL) of the 38 eyes of 28 well-controlled uveitic patients who underwent cataract surgery were monitored for 12 months.

Results: Mean BCVA improved significantly at the postoperative visits when compared to the baseline (all P<0. Read More

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January 2022

Refractive error induced by intraocular lens tilt after intrascleral intraocular lens fixation.

Int Ophthalmol 2022 Jan 22. Epub 2022 Jan 22.

Department of Ophthalmology, The Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minatoku, Tokyo, 105-0003, Japan.

Purpose: To investigate the spherical shift of intraocular lens (IOL) tilt after intrascleral fixation.

Methods: We retrospectively reviewed the medical records of patients who underwent flanged intrascleral IOL fixation with transconjunctival 25- or 27-gauge pars plana vitrectomy at the Department of Ophthalmology of the Jikei University Hospital. The minimum follow-up duration was 3 months. Read More

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January 2022