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https://www.readbyqxmd.com/read/28212594/percutaneous-full-endoscopic-treatment-of-bertolotti-syndrome-a-report-of-three-cases-with-technical-note
#1
Byapak Paudel, Hyeun-Sung Kim, Jee Soo Jang, Jeong Hoon Choi, Sung Kyun Chung, Jung Sup Lee, Jeong Hoon Kim, Seong Hoon Oh, Il Tae Jang
Background Bertolotti syndrome is characterized by an abnormal enlargement of the transverse process of the most caudal lumbar vertebra. Most of the time it is asymptomatic, but when it is symptomatic it is associated with low back pain, radiating leg pain, or both. There is no consensus regarding management of this pathology. Open to minimal invasive tubular resection techniques are described in the literature, but a full endoscopic resection technique has not yet been described. Endoscopic technique is a less invasive target-oriented iliolumbar ligament preserving technique...
February 17, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28211157/unravelling-intravertebral-integration-modularity-and-disparity-in-felidae-mammalia
#2
Marcela Randau, Anjali Goswami
Morphological integration and modularity, which describe the relationships among morphological attributes and reflect genetic, developmental, and functional interactions, have been hypothesized to be major influences on trait responses to selection and thus morphological evolution. The mammalian presacral vertebral column shows little variation in vertebral count and therefore specialization for function occurs primarily through modification of vertebral shape. However, vertebral shape has been suggested to be under strong control from developmental canalization, although this has never been explicitly tested...
February 17, 2017: Evolution & Development
https://www.readbyqxmd.com/read/28210742/clinics-in-diagnostic-imaging-174-l5-vertebral-superior-facet-osteoblastoma-ob
#3
Manickam Subramanian, Hong Chou, Kabilan Chokkappan, Wilfred Cg Peh
A 25-year-old man presented with chronic low back pain and occasional radiation to the right lower limb. Magnetic resonance imaging and computed tomography (CT) of the lumbar spine showed an osteolytic expansile lesion with a central sclerotic nidus in the right superior facet of the L5 vertebra and surrounding marrow oedema. The diagnosis of osteoblastoma was made based on imaging findings and confirmed after CT-guided biopsy. Radiofrequency ablation of the lesion was successfully performed. The patient tolerated the procedure well and showed symptomatic relief...
February 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28210500/drug-release-characteristics-and-tissue-distribution-of-rifapentine-polylactic-acid-sustained-release-microspheres-in-rabbits-after-paravertebral-implantation
#4
Zheng Zhang, Linbo Wu, Haijian Li, Zhicheng Long, Xinghua Song
BACKGROUND: Rates of drug-resistant tuberculosis (TB) and TB associated with human immunodeficiency virus (HIV) infection have increased dramatically, intensifying challenges in TB control. New formulations of TB treatment drugs that control drug release and increase local drug concentrations will have a significant impact on mitigating the toxic side effects and increasing the clinical efficacy of anti-TB drugs. OBJECTIVES: The aim was to observe the sustained release characteristics of rifapentine polylactic acid sustained-release microspheres in vivo and the accumulation of rifapentine in other tissues following paravertebral implantation...
November 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28210054/sagittal-plane-spinal-mobility-is-associated-with-dynamic-balance-ability-of-community-dwelling-elderly-people
#5
Yahiko Takeuchi
[Purpose] The purpose of this study was to clarify the correlation between the range of spinal mobility on the sagittal plane and the dynamic balance ability of elderly people living in communities. [Subjects and Methods] The persons studied were 31 healthy elderly people living in the community (16 females and 15 males). The range of mobility of the participants' spines in the sagittal plane was measured by using a spinal mouse(®). Balance ability was evaluated by using Functional reach (FR), Timed up and go (TUG), and Maximum walking speed (MWS)...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28207660/predictors-of-distal-adding-on-in-thoracic-major-curves-with-ar-lumbar-modifiers
#6
Joshua S Murphy, Vidyadhar V Upasani, Burt Yaszay, Tracey P Bastrom, Carrie E Bartley, Amer Samdani, Lawrence G Lenke, Peter O Newton
STUDY DESIGN: Retrospective review of prospectively collected data. OBJECTIVE: To determine whether the last substantially touched vertebra (LSTV) is a valid lowest instrumented vertebra (LIV) for both Lenke 1 and 2 curve patterns with AR lumbar modifiers, and to identify preoperative risk factors of distal adding-on. SUMMARY OF BACKGROUND DATA: Previous studies have recommended selecting the LSTV as the LIV for Lenke 1AR curves (main thoracic curve with A lumbar modifier and L4 tilt to the right (thoracic overhang/King type IV curve)...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28207621/mri-based-decision-making-of-implant-removal-in-deep-wound-infection-after-instrumented-lumbar-fusion
#7
Masahiro Kanayama, Tomoyuki Hashimoto, Keiichi Shigenobu, Fumihiro Oha, Akira Iwata, Masaru Tanaka
STUDY DESIGN: A retrospective study. OBJECTIVE: The aim of the study was to review the treatment of deep wound infection after posterior instrumented lumbar fusion, and thereby to optimize the decision-making process of implant removal or retention on the basis of magnetic resonance imaging (MRI) assessment. SUMMARY OF BACKGROUND DATA: Biofilm formed on the surface of the spinal implant prevents infiltration of antibiotics and makes the infection treatment more complicated...
March 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28207465/two-rare-variants-of-left-vertebral-artery
#8
Rajani Singh
Though the variations of vertebral artery are clinically asymptomatic yet abnormalities are of diagnostic importance either prior to vascular surgery in the neck region or in patients of intravascular diseases such as arteriovenous malformations or cerebral aneurysms. Therefore, the aim of the study is to bring out 2 variations in the configuration of vertebral artery and their clinical implication. During dissection of thorax of 2 female cadavers, 2 different variants of configurations of left vertebral arteries were observed...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28207388/segmentation-of-pathological-structures-by-landmark-assisted-deformable-models
#9
Bulat Ibragimov, Robert Korez, Bostjan Likar, Franjo Pernus, Lei Xing, Tomaz Vrtovec
Computerized segmentation of pathological structures in medical images is challenging, as, in addition to unclear image boundaries, image artifacts and traces of surgical activities, the shape of pathological structures may be very different from the shape of normal structures. Even if a sufficient number of pathological training samples are collected, statistical shape modeling cannot always capture shape features of pathological samples as they may be suppressed by shape features of a considerably larger number of healthy samples...
February 13, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28205668/-spinal-nephroblastoma-at-an-uncommon-localization-in-a-dog
#10
Norbert Langen, Kerstin von Pückler, Carola Tillmanns, Valérie Bornand, Martin Kramer, Martin J Schmidt
A 7-month-old intact male Otterhound was presented for diagnosis of progressive hindlimb paresis. The neurological examination revealed a severe ambulatory paraparesis localised to the left-sided region of the lower motor neuron (L4-S1). Magnetic resonance imaging was suggestive for an intradural-extramedullary neoplasia at the fifth lumbar vertebra. Surgical exploration demonstrated an intradural-extramedullary mass, which partially invaded the spinal cord. The mass was removed with the exception of the intramedullar part, and the diagnosis of a nephroblastoma was made histopathologically...
February 16, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28205592/a-new-basal-sauropodiform-dinosaur-from-the-lower-jurassic-of-yunnan-province-china
#11
Ya-Ming Wang, Hai-Lu You, Tao Wang
The Lufeng Formation in Lufeng Basin of Yunnan Province, southwestern China preserves one of the richest terrestrial Lower Jurassic vertebrate faunas globally, especially for its basal sauropodomorphs, such as Lufengosaurus and Yunnanosaurus. Here we report a new taxon, Xingxiulong chengi gen. et sp. nov. represented by three partial skeletons with overlapping elements. Xingxiulong possesses a number of autapomorphies, such as transversely expanded plate-like summit on top of the neural spine of posterior dorsal vertebrae, four sacral vertebrae, robust scapula, and elongated pubic plate approximately 40% of the total length of the pubis...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205378/chronic-low-back-pain-and-its-association-with-lumbar-vertebrae-and-intervertebral-disc-changes-in-adults-a-case-control-study
#12
Aranjan L Karunanayake, Arunasalam Pathmeswaran, Lalith S Wijayaratne
AIM: This study was done to determine the association between chronic low back pain and vertebral fractures, intervertebral disc space (IDS) narrowing, vertebral osteophytes and spondylolisthesis among adults. METHOD: This case control study was done in Sri Lanka. Cases were patients with low back pain and controls were without low back pain. Postero-anterior and lateral radiographs of lumbar sacral spine of both groups were studied. To detect vertebral fractures in fourth and fifth lumbar vertebrae, anterior and posterior heights of vertebrae were measured using a Vernier caliper and antero-posterior ratio (A/P) was calculated...
February 16, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28204844/safe-placement-of-lateral-mass-screw-in-the-subaxial-cervical-spine-a-case-series
#13
Di Zhang, Xianda Gao, Jiang Jiang, Fanlong Kong, Yong Shen, Wenyuan Ding, Xiufang Hao, Huixian Cui
PURPOSE: Laminectomy with lateral mass screw fixation has been proven to be an effective method to treat the multilevel cervical degenerative myelopathy and severe cervical spondylosis. However, accurate and safe insertion of the lateral mass screw is technically demanding due to the individual variations of the anatomy of the lateral mass of the subaxial cervical spine. Misplaced lateral mass screw is not uncommon, and operation-related complications still beset the surgeons, which may impair the clinical outcomes...
February 15, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28202221/elastoplasty-as-a-promising-novel-technique-vertebral-augmentation-with-an-elastic-silicone-based-polymer
#14
Alessandro Gasbarrini, Riccardo Ghermandi, Yunus Emre Akman, Marco Girolami, Stefano Boriani
OBJECTIVE: Percutaneous vertebroplasty with polymethylmethacrylate (PMMA) restores the stiffness and the strength of fractured vertebral bodies, but changes the pattern of the stress transfer. This effect may cause a secondary fracture of the adjacent vertebrae. Elastoplasty has emerged as a new technique to overcome this complication. The aim of this study is to retrospectively evaluate the clinical results of the elastoplasty procedure. MATERIALS AND METHODS: Thirthy nine patients (9 males, 30 females, 87 spinal levels) were clinically evaluated pre and postoperatively in terms of pain relief, leakage and silicone embolism...
February 12, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28198524/morphometric-analysis-of-the-uncinate-processes-of-the-cervical-vertebrae
#15
Necdet Kocabiyik, Nurcan Ercikti, Selcuk Tunali
BACKGROUND: Uncinate processes are distinct features unique to cervical vertebrae. They consistently found on posterolateral aspect of the superior end plate of third to seventh cervical vertebrae. In this study, we investigated the morphology of the uncinate processes with a particular emphasis on the regional anatomy and clinical significance. MATERIALS AND METHODS: The study included 63 vertebrae. The width, height and length of uncinate processes were measured with a digital caliper...
February 15, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28196632/procedure-selection-and-patient-positioning-influence-spine-kinematics-during-high-velocity-low-amplitude-spinal-manipulation-applied-to-the-low-back
#16
Spencer Bell, Kevin D'Angelo, Gregory N Kawchuk, John J Triano, Samuel J Howarth
OBJECTIVES: This investigation compared indirect 3-dimensional angular kinematics (position, velocity, and acceleration) of the lumbar spine for 2 different high-velocity, low-amplitude (HVLA) spinal manipulation procedures (lumbar spinous pull or push), and altered initial patient lower limb posture. METHODS: Twenty-four participants underwent 6 HVLA procedures directed toward the presumed L4 vertebra, reflecting each combination of 2 variants of a spinal manipulation application technique (spinous pull and push) and 3 initial hip flexion angles (0°, 45°, and 90°) applied using a right lateral recumbent patient position...
February 10, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28195561/automatic-and-hierarchical-segmentation-of-the-human-skeleton-in-ct-images
#17
Yabo Fu, Shi Liu, Hui Harold Li, Deshan Yang
Accurate segmentation of each bone in human skeleton is useful in many medical disciplines. Results of bone segmentation could facilitate bone disease diagnosis and post-treatment assessment, and support planning and image guidance for many treatment modalities including surgery and radiation therapy. As a medium level medical image processing task, accurate bone segmentation can facilitate automatic internal organ segmentation by providing stable structural reference for inter- or intra-patient registration and internal organ localization...
February 14, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28193134/non-coronary-vascular-calcification-bone-mineral-density-and-muscle-mass-in-institutionalized-frail-nonagenarians
#18
Fernando Idoate, Eduardo L Cadore, Alvaro Casas-Herrero, Fabricio Zambom-Ferraresi, Nicolas Martinez-Velilla, Leocadio Rodriguez-Mañas, Pedro M Azkarate, Martim Bottaro, Robison Ramírez-Vélez, Mikel Izquierdo
The purpose of this study was to compare the vascular calcification at thoracic (TAC) and ab-dominal (AAC) aorta, iliac (IAC) and femoral (FAC) arteries, and bone mineral density (BMD) of the lumbar vertebrae between frail and robust nonagenarians, as well as to verify the associations between vascular calcification with BMD, muscle tissue quality and quantity in both groups. Forty-two elderly subjects participated in this study: 29 institutionalized frail (92.0±3.2 years) and 13 ro-bust (89.0±4.0 years) elderly participants...
February 14, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28192864/a-reassessment-of-cervical-surface-anatomy-via-ct-scan-in-an-adult-chinese-population
#19
Xin-Hua Shen, Hua-Dan Xue, Yu Chen, Man Wang, S Ali Mirjalili, Zhu-Hua Zhang, Chao Ma
Surface landmarks in the neck are important for orientations of cervical glands, arteries, veins, nerves and vertebrae. Recent research suggests some orientations are not correct. What are the cervical landmark orientations in the Chinese population? In this study, two essential cervical anatomy planes, the thyroid cartilage and C7 planes, were assessed in living adult Chinese subjects using computed tomography (CT), and the hyoid, carotid bifurcation, cricoid cartilage, thyroid arteries and vertebral artery were simultaneously positioned...
February 13, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28192270/risk-factors-for-cement-leakage-after-vertebroplasty-or-kyphoplasty-a-meta-analysis-of-published-evidence
#20
REVIEW
Yi Zhan, Jianzhong Jiang, Haifen Liao, Haitao Tan, Keqin Yang
BACKGROUND: Cement leakage is the most common complication of vertebroplasty and kyphoplasty. So far, the reported risk factors remain conflicting due to limited data and lack of uniform measurement and evaluation. Here, we aimed to perform a systematic review and meta-analysis of potential risk factors for cement leakage after vertebroplasty or kyphoplasty. METHODS: Relevant literature was retrieved using PubMed, EMBASE, Cochrane Controlled Trial Register and MEDLINE with no language restriction, supplemented by a hand-search of the reference lists of selected articles...
February 9, 2017: World Neurosurgery
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