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Spinal anatomy

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https://www.readbyqxmd.com/read/28209740/quantitative-mri-volumetry-diffusivity-cerebrovascular-flow-and-cranial-hydrodynamics-during-head-down-tilt-and-hypercapnia-the-spacecot-study
#1
Larry Allen Kramer, Khader M Hasan, Ashot E Sargsyan, Karina Marshall-Goebel, Jörn Rittweger, Dorit Donoviel, Saki Higashi, Benson Mwangi, Darius A Gerlach, Eric M Bershad
PURPOSE: In order to improve the pathophysiologic understanding of visual changes observed in astronauts, we aimed to use quantitative MRI to measure anatomic and physiologic responses during a ground-based spaceflight analogue (head down tilt, HDT) combined with increased ambient carbon dioxide (CO2). METHODS: Six healthy, male subjects participated in the double-blinded, randomized cross-over design study with two conditions: 26.5 h of -12° HDT with ambient air and with 0...
February 16, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28180983/scoliosis-convexity-and-organ-anatomy-are-related
#2
Tom P C Schlösser, Tom Semple, Siobhán B Carr, Simon Padley, Michael R Loebinger, Claire Hogg, René M Castelein
PURPOSE: Primary ciliary dyskinesia (PCD) is a respiratory syndrome in which 'random' organ orientation can occur; with approximately 46% of patients developing situs inversus totalis at organogenesis. The aim of this study was to explore the relationship between organ anatomy and curve convexity by studying the prevalence and convexity of idiopathic scoliosis in PCD patients with and without situs inversus. METHODS: Chest radiographs of PCD patients were systematically screened for existence of significant lateral spinal deviation using the Cobb angle...
February 8, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28165638/anatomical-complications-of-epidural-anesthesia-a-comprehensive-review
#3
REVIEW
Prasanthi Maddali, Marc Moisi, Jeni Page, Parthasarathi Chamiraju, Christian Fisahn, Rod Oskouian, R Shane Tubbs
Epidural anesthesia is a versatile technique widely used in treating lumbar spinal pain syndromes. Complications during these procedures can arise either from needle placement or from administration of medication. Potential risks include infection, hematoma, intravascular or subdural injections of medication, direct nerve trauma, air embolism, entry into a disc space, urinary retention, radiation exposure, and hypersensitivity reactions. The objective of this article is to review the complications of lumbar epidural injections and discuss the potential pitfalls related to these procedures...
February 6, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28156208/image-guided-intrathecal-baclofen-pump-catheter-implantation-a-technical-note-and-case-series
#4
Shenandoah Robinson, Faith C Robertson, Hormuzdiyar H Dasenbrock, Cormac P O'Brien, Charles Berde, Horacio Padua
OBJECTIVE Medically refractory spasticity and dystonia are often alleviated with intrathecal baclofen (ITB) administration through an indwelling catheter inserted in the lumbar spine. In patients with cerebral palsy, however, there is a high incidence of concomitant neuromuscular scoliosis. ITB placement may be technically challenging in those who have severe spinal deformity or who have undergone prior instrumented thoracolumbar fusion. Although prior reports have described drilling through the lumbar fusion mass with a high-speed bur, as well as IT catheter implantation at the foramen magnum or cervical spine, these approaches have notable limitations...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28154126/diagnostic-quality-of-3d-t2-space-compared-with-t2-fse-in-the-evaluation-of-cervical-spine-mri-anatomy
#5
F H Chokshi, G Sadigh, W Carpenter, J W Allen
BACKGROUND AND PURPOSE: Spinal anatomy has been variably investigated using 3D MRI. We aimed to compare the diagnostic quality of T2 sampling perfection with application-optimized contrasts by using flip angle evolution (SPACE) with T2-FSE sequences for visualization of cervical spine anatomy. We predicted that T2-SPACE will be equivalent or superior to T2-FSE for visibility of anatomic structures. MATERIALS AND METHODS: Adult patients undergoing cervical spine MR imaging with both T2-SPACE and T2-FSE sequences for radiculopathy or myelopathy between September 2014 and February 2015 were included...
February 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28137544/contralateral-approach-for-minimally-invasive-treatment-of-upper-lumbar-intervertebral-disc-herniation-technical-note-and-case-series
#6
Ribhu T Jha, Hasan R Syed, Michael Catalino, Faheem A Sandhu
BACKGROUND: Upper lumbar disc herniations comprise only 1 to 2% of all lumbar disc herniations. Patients present with non-specific signs and symptoms in comparison to predictable radiculopathies as seen in lower lumbar disc herniations. The unique anatomical characteristics of the upper lumbar spine present several challenges for safe and effective surgical treatment of disc herniations. The authors review the anatomy of the upper lumbar spine, describe a novel approach to upper lumbar disc herniations, and present three cases with a focus on clinical outcome and technical pearls...
January 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28127106/comparative-anatomy-of-gastrin-releasing-peptide-pathways-in-the-trigeminal-sensory-system-of-mouse-and-the-asian-house-musk-shrew-suncus-murinus
#7
Keiko Takanami, Kaihei Inoue, Hiroki Mukai, Kei Tamura, Takamichi Jogahara, Sen-Ichi Oda, Mitsuhiro Kawata, Tatsuya Sakamoto, Hirotaka Sakamoto
Gastrin-releasing peptide (GRP) has recently been identified as an itch-signaling molecule in the primary afferents and spinal cord of rodents. However, little information exists on the expression and localization of GRP in the trigeminal somatosensory system other than in rats. We examined the generality of the trigeminal GRP system in mammals using two distinct species, suncus as a model of specialized placental mammals known to have a well-developed trigeminal sensory system and mice as a representative small laboratory animal...
December 28, 2016: Acta Histochemica et Cytochemica
https://www.readbyqxmd.com/read/28115867/sonographic-tracking-of-trunk-nerves-essential-for-ultrasound-guided-pain-management-and-research
#8
Ke-Vin Chang, Chih-Peng Lin, Chia-Shiang Lin, Wei-Ting Wu, Manoj K Karmakar, Levent Özçakar
Delineation of architecture of peripheral nerves can be successfully achieved by high-resolution ultrasound (US), which is essential for US-guided pain management. There are numerous musculoskeletal pain syndromes involving the trunk nerves necessitating US for evaluation and guided interventions. The most common peripheral nerve disorders at the trunk region include thoracic outlet syndrome (brachial plexus), scapular winging (long thoracic nerve), interscapular pain (dorsal scapular nerve), and lumbar facet joint syndrome (medial branches of spinal nerves)...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28112536/the-structure-and-function-of-the-central-nervous-system-and-sense-organs-in-the-canon-of-medicine-by-avicenna
#9
Pedzisai Mazengenya, Rashid Bhikha
Ibn Sina (1037 AD), also known as Avicenna in the West, is recognized as one of the forefathers of modern medicine. He was widely accepted as an influential and leading scientific figure of the medieval ages. His book the "Canon of Medicine" collected all aspects of medical knowledge available from ancient Greek and Muslim sources and also added his own. The medical information he collected ranged from basic medical sciences to applied and specialized medical fields.  In the current vignette, we present an analysis of the basic anatomy of the brain, spinal cord and some sense organs as presented in the Canon of medicine and compare their relevance in modern medical practice and human anatomy knowledge...
January 2017: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/28110025/do-the-complications-increased-in-the-anterolateral-right-side-approach-to-treat-the-cervical-degenerative-disorders-a-retrospective-cohort-study
#10
Zhaoyu Ba, Fumin Pan, Xiaoming Liu, Jianguang Zhu, Desheng Wu
The dysphagia and recurrent laryngeal nerve (RLN) palsy are the most common complications of the patients who underwent anterior cervical surgery in the current literature. These morbidities have led to the study of the impact of sidedness in anterior cervical spine surgery. However, many reports documented the left-side was more effective and safe than right-side based on the anatomy. So the right-side approach is more challenging. We retrospectively study 503 patients with cervical degenerative diseases who underwent cervical spinal surgery using anterolateral right-side approach in our spine center from September 1999 to December 2012 and evaluate the efficient and safety of the anterolateral right-side approach to treat the cervical degenerative diseases...
January 18, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28108406/berry-s-ligament-and-the-inferior-thyroid-artery-as-reliable-anatomical-landmarks-for-the-recurrent-laryngeal-nerve-rln-a-fresh-cadaveric-study-of-the-cervical-spine-the-rln-relevant-to-spine
#11
Ali Rajabian, Michael Walsh, Nasir A Quraishi
BACKGROUND CONTEXT: Although most cadaveric studies of the Recurrent Laryngeal Nerve (RLN) have focused on course variations, they have usually been done on preserved (fixed and embalmed) cadavers, which renders the RLN immobile and of less surgical landmark value. PURPOSE: Our aim was to perform a thorough exposure in fresh cadavers, with the intention of investigating the Inferior Thyroid Artery (ITA) and Berry's ligament as reliable landmarks for the identification of the RLN in anterior cervical spine surgery...
March 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28097078/the-human-central-canal-of-the-spinal-cord-a-comprehensive-review-of-its-anatomy-embryology-molecular-development-variants-and-pathology
#12
REVIEW
Erfanul Saker, Brandon M Henry, Krzysztof A Tomaszewski, Marios Loukas, Joe Iwanaga, Rod J Oskouian, R Shane Tubbs
The human central canal of the spinal cord is often overlooked. However, with advancements in imaging quality, this structure can be visualized in more detail than ever before. Therefore, a timely review of this part of the cord seemed warranted. Using standard search engines, a literature review was performed for the development, anatomy, and pathology involving the central canal. Clinicians who treat patients with issues near the spine or interpret imaging of the spinal cord should be familiar with the morphology and variants of the central canal...
December 12, 2016: Curēus
https://www.readbyqxmd.com/read/28094482/real-time-ultrasound-guided-spinal-anesthesia-in-patients-with-predicted-difficult-anatomy
#13
Hesham Elsharkawy, Ankit Maheshwari, Rovnat Babazade, Anahi Perlas, Sherif Zaky, Loran M Soliman
BACKGROUND: There are limited reports of lumbar neuraxial blocks using real-time ultrasound in patients with predicted difficulties. We compared the number of attempts to perform spinal anesthesia using real time ultrasound guidance versus landmark technique in patients meeting predefined criteria for difficult spinal anesthesia. We also compared procedure time, block success, patient satisfaction and difficulty scores between groups. METHODS: Following institutional review board approval patients scheduled for total hip or knee arthroplasty with expected difficulty to perform spinal anesthesia were included...
January 17, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28092118/incorporation-of-ct-based-measurements-of-trunk-anatomy-into-subject-specific-musculoskeletal-models-of-the-spine-influences-vertebral-loading-predictions
#14
Alexander G Bruno, Hossein Mokhtarzadeh, Brett T Allaire, Kelsey R Velie, M Clara De Paolis Kaluza, Dennis E Anderson, Mary L Bouxsein
We created subject-specific musculoskeletal models of the thoracolumbar spine by incorporating spine curvature and muscle morphology measurements from computed tomography (CT) scans to determine the degree to which vertebral compressive and shear loading estimates are sensitive to variations in trunk anatomy. We measured spine curvature and trunk muscle morphology using spine CT scans of 125 men, and then created four different thoracolumbar spine models for each person: (i) height and weight adjusted (Ht/Wt models); (ii) height, weight, and spine curvature adjusted (+C models); (iii) height, weight, and muscle morphology adjusted (+M models); and (iv) height, weight, spine curvature, and muscle morphology adjusted (+CM models)...
January 16, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28087435/postmyelotomy-closure-of-spinal-cord-zip-lock-technique-an-initial-experience
#15
Daljit Singh, Shaam Bodeliwala, Hukum Singh, Anita Jagetia, Amit Mittal
Proper closure of the pia matter is necessary to restore the normal anatomy and prevent postoperative painful dysesthesia after excision of intramedullary spinal cord tumor. Two methods of closure of the pia have been described: welding technique and conventional suturing. Here, we report our initial experience with a new "pial press" or "zip-lock" technique for pial closure where pial layers are simply held together and plunged into each other with small micro tooth forceps. Advantages of the technique over other techniques are its less chances of suture related complications or trauma to the posterior column and simplicity of the technique...
January 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28072502/wallerian-degeneration-beyond-the-corticospinal-tracts-conventional-and-advanced-mri-findings
#16
REVIEW
Yin Jie Chen, Seyed Ali Nabavizadeh, Arastoo Vossough, Sunil Kumar, Laurie A Loevner, Suyash Mohan
Wallerian degeneration (WD) is defined as progressive anterograde disintegration of axons and accompanying demyelination after an injury to the proximal axon or cell body. Since the 1980s and 1990s, conventional magnetic resonance imaging (MRI) sequences have been shown to be sensitive to changes of WD in the subacute to chronic phases. More recently, advanced MRI techniques, such as diffusion-weighted imaging (DWI) and diffusion tensor imaging (DTI), have demonstrated some of earliest changes attributed to acute WD, typically on the order of days...
November 7, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28065877/charles-estienne-1504-1564-his-life-work-and-contribution-to-anatomy-and-the-first-description-of-the-canal-in-the-spinal-cord
#17
REVIEW
Konstantinos Markatos, Demetrios Chytas, Demetrios Korres, Konstantinos Laios, Georgios Androutsos, Efstathios Chronopoulos
The purpose of this historic review is to summarize the life, work and contribution to anatomy of Charles Estienne (also known by the Latin name Carolus Stephanus). Charles Estienne was an early exponent of the science of anatomy in France. Although he remained under the influence of the Galenic tradition of medicine, anatomy and surgery throughout his distinguished career, he had a significant influence on the scientific revolution and anatomy reformation of the 16th century. Nevertheless he cannot be place in the same level of contribution as Vesalius due to his lack of discipline in his work, hesitation to diverge totally from traditional beliefs and his hesitation for a total criticism of the Galenic tradition...
January 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28063076/automatic-detection-of-vertebral-number-abnormalities-in-body-ct-images
#18
Shouhei Hanaoka, Yoshiyasu Nakano, Mitsutaka Nemoto, Yukihiro Nomura, Tomomi Takenaga, Soichiro Miki, Takeharu Yoshikawa, Naoto Hayashi, Yoshitaka Masutani, Akinobu Shimizu
PURPOSE: The anatomical anomaly of the number of vertebral bones is one of the major anomalies in the human body, which can cause confusion of the spinal level in, for example, surgery. The aim of this study is to develop an automatic detection system for this type of anomaly. METHODS: We utilized our previously reported anatomical landmark detection system for this anomaly detection problem. This system uses a landmark point distribution model (L-PDM) to find multiple landmark positions...
January 6, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28056123/the-interface-of-mechanics-and-nociception-in-joint-pathophysiology-insights-from-the-facet-and-temporomandibular-joints
#19
Megan M Sperry, Meagan E Ita, Sonia Kartha, Sijia Zhang, Ya-Hsin Yu, Beth Winkelstein
Chronic joint pain is a widespread problem that frequently occurs with aging and trauma. Pain occurs most often in synovial joints, the body's load bearing joints. The mechanical and molecular mechanisms contributing to synovial joint pain are reviewed using two examples, the cervical spinal facet joints and the temporomandibular joint (TMJ). Although much work has focused on the macroscale mechanics of joints in health and disease, the combined influence of tissue mechanics, molecular processes, and nociception in joint pain has only recently become a focus...
February 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28048682/su-f-t-188-a-robust-treatment-planning-technique-for-proton-pencil-beam-scanning-cranial-spinal-irradiation
#20
M Zhu, M Yam, M Mehta, S Badiyan, K Young, R Malyapa, W Regine, K Langen
PURPOSE: To propose a proton pencil beam scanning (PBS) cranial spinal irradiation (CSI) treatment planning technique robust against patient roll, isocenter offset and proton range uncertainty. METHOD: Proton PBS plans were created (Eclipse V11) for three previously treated CSI patients to 36 Gy (1.8 Gy/fractions). The target volume was separated into three regions: brain, upper spine and lower spine. One posterior-anterior (PA) beam was used for each spine region, and two posterior-oblique beams (15° apart from PA direction, denoted as 2PO_15) for the brain region...
June 2016: Medical Physics
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