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https://www.readbyqxmd.com/read/29781931/ultrasound-assessment-of-ice-ball-formation-by-cryoneurolysis-device-in-an-ex-vivo-model
#1
Adrian Kastler, Hannes Gruber, Elke Gizewski, Alexander Loizides
BACKGROUND AND OBJECTIVES: Real-time ice-ball formation during cryoneurolysis has sparsely been assessed with ultrasound (US). Cryoneurolysis in lower back pain syndrome represents a validated management option in cases of facet joint syndrome. Ultrasound may be a useful tool to perform facet joint cryodenervation. The objective of this study was to assess, ex vivo, the ability of US to assess the ice-ball formation of a cryoneurolysis device. METHODS: Ultrasound assessment of the ice-ball depiction was done using chicken muscle at 22°C in which several freezing cycles were performed with both 2...
May 17, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29772498/test-retest-reliability-of-laser-displacement-mechanomyography-in-paraspinal-muscles-while-in-lumbar-extension-or-flexion
#2
Christian Than, Laura Seidl, Danijel Tosovic, J Mark Brown
This study investigated test-retest reliability of mechanomyography (MMG) on lumbar paraspinal muscles. Healthy male and female subjects (mean ± standard deviation, 25 ± 9.4 years, BMI 21.8 ± 2.99, n = 34) were recruited. Two test sessions (one week apart) consisted of MMG (laser displacement sensor (LDS)) muscle evaluations over the 10 lumbar facet joints, and 2 bilateral sacral sites, in anatomical extension and flexion. Two-way repeated measures ANOVA with Tukey's post hoc showed no significant differences between testing sessions for the same position (p > 0...
May 12, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29765790/direct-posterior-bipolar-cervical-facet-radiofrequency-rhizotomy-a-simpler-and-safer-approach-to-denervate-the-facet-capsule
#3
Ovidiu Palea, Haroon M Andar, Ramon Lugo, Michelle Granville, Robert E Jacobson
Radiofrequency cervical rhizotomy has been shown to be effective for the relief of chronic neck pain, whether it be due to soft tissue injury, cervical spondylosis, or post-cervical spine surgery. The target and technique have traditionally been taught using an oblique approach to the anterior lateral capsule of the cervical facet joint. The goal is to position the electrode at the proximal location of the recurrent branch after it leaves the exiting nerve root and loops back to the cervical facet joint. The standard oblique approach to the recurrent nerve requires the testing of both motor and sensory components to verify the correct position and ensure safety so as to not damage the slightly more anterior nerve root...
March 14, 2018: Curēus
https://www.readbyqxmd.com/read/29758372/percutaneous-endoscopic-lumbar-surgery-via-transfacet-approach-for-lumbar-synovial-cyst
#4
Hsuan-Han Wu, Lei Chu, Yong-Jian Zhu, Chun-Yuan Cheng, Chien-Min Chen
BACKGROUND: There are currently no high-quality studies on the optimal therapeutic approach for juxtafacet cyst as treatment guidelines have not been developed. Herein, a novel technique in which using an endoscopic transfacet approach to treat a patient with symptomatic lumbar synovial cyst was presented. . CASE DESCRIPTION: A 87-year-old man presented with severe dull pain in the right anterior thigh had developed. Lumbar magnetic resonance imaging (MRI) revealed disc extrusion over the central canal zone at the L2-3 and L4-L5 level, and an ovoid lesion with a hyperintense center plus a hypointense rim on the T2-weighted image...
May 11, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29753275/cervical-spine-fracture-through-a-cervical-disc-replacement
#5
M Flanagan, D T Cawley, N Cassidy
INTRODUCTION: We report a rare case of cervical spine trauma through a cervical disc replacement and adjacent multilevel disc fusions. Cervical disc replacement (CDR) is a viable option for the surgical treatment of degenerative disc disease however long term follow up data regarding this operative technique is poor specifically relating to traumatic complications. We know of no previous reports of bilateral cervical pedicle fractures occurring adjacent to CDR and anterior cervical spine instrumentation...
March 29, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29748528/salmon-calcitonin-attenuates-degenerative-changes-in-cartilage-and-subchondral-bone-in-lumbar-facet-joint-in-an-experimental-rat-model
#6
Yu Gou, Faming Tian, Qingfu Kong, Tiangang Chen, Hetong Li, Qinglie Lv, Liu Zhang
BACKGROUND Facet joint degeneration (FJD) is one of the common causes of low back pain (LBP), and estrogen deficiency is one of the triggers for FJD. Calcitonin may possess the potential for treating osteoarthritis, but to date the hormone has not been studied in the treatment of FJD. Therefore, the aim of this study was to investigate the effects of salmon calcitonin (sCT) on FJD induced by estrogen deficiency after ovariectomy (OVX). MATERIAL AND METHODS Thirty female Sprague-Dawley rats were randomly assigned to 3 groups: the OVX group received bilateral OVX, the OVX + sCT group received subcutaneous administration of sCT (16 IU/kg/2 days) following bilateral OVX, and the Sham group received sham surgery...
May 7, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29742535/augmented-reality-guided-lumbar-facet-joint-injections
#7
Christoph A Agten, Cyrill Dennler, Andrea B Rosskopf, Laurenz Jaberg, Christian W A Pfirrmann, Mazda Farshad
OBJECTIVES: The aim of this study was to assess feasibility and accuracy of augmented reality-guided lumbar facet joint injections. MATERIALS AND METHODS: A spine phantom completely embedded in hardened opaque agar with 3 ring markers was built. A 3-dimensional model of the phantom was uploaded to an augmented reality headset (Microsoft HoloLens). Two radiologists independently performed 20 augmented reality-guided and 20 computed tomography (CT)-guided facet joint injections each: for each augmented reality-guided injection, the hologram was manually aligned with the phantom container using the ring markers...
May 8, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29740508/case-presentation-and-short-perspective-on-management-of-foraminal-far-lateral-discs-and-stenosis
#8
REVIEW
Nancy E Epstein
Background: The management of lumbar foraminal/far lateral discs (FOR/FLD) with stenosis remains controversial. Operative choices should be based on each patient's preoperative dynamic X-ray findings, magnetic resonance (MR), and computed tomography (CT) studies. Here we reviewed several options for decompression alone vs. decompression with fusion. Methods: Safe excision of FOR/FLD with stenosis should begin at the level above the disc herniation, as identification of the superior, foraminally, and far laterally exiting nerve root is critical...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29734232/corticosteroid-injections-into-lumbar-facet-joints-a-prospective-randomized-double-blind-placebo-controlled-trial
#9
David J Kennedy, Lisa Huynh, Joe Wong, Ryan Mattie, Josh Levin, Matthew Smuck, Byron J Schneider
BACKGROUND: Corticosteroid injections into the intra-articular (IA) zygapophysial (z-joints) are frequently utilized to treat this cause of low back pain. No studies have been done on the efficacy of IA corticosteroids in those with z-joint pain confirmed by dual comparative medial branch blocks (MBB). OBJECTIVE: To determine if an injection of a corticosteroid into lumbar z-joints is effective in reducing pain and the need for radiofrequency neurotomy (RFN). DESIGN: Double-Blind, prospective, randomized, placebo controlled trial SETTING: Academic Medical Center PATIENTS: 28 subjects with z-joint pain confirmed by MBBs...
May 4, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29730457/anterior-posterior-length-discrepancy-of-the-spinal-column-in-adolescent-idiopathic-scoliosis-a-3d-ct-study
#10
Rob C Brink, Tom P C Schlösser, Marijn van Stralen, Koen L Vincken, Moyo C Kruyt, Steve C N Hui, Max A Viergever, Winnie C W Chu, Jack C Y Cheng, René M Castelein
BACKGROUND CONTEXT: One of the characteristics of reported observations in adolescent idiopathic scoliosis (AIS) is that the thoracic spine is longer anteriorly than posteriorly, more pronounced around the apex than the transitional zones. This reversal of the normal kyphotic anatomy of the thoracic spine is related to questions of etiopathogenesis of AIS. The changes in the anatomy of the anterior column have been described rather in detail, however, the role of the posterior spinal column and the laminae has so far not been elucidated...
May 3, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29725385/atypical-synovial-chondromatosis-of-the-right-knee-a-case-report
#11
Yu-Ping Yang, Jiang-Jing Wang, Hong-Yuan Li
Synovial chondromatosis, also known as synovial osteochondromatosis, is a rare, benign condition characterized by the formation of multiple cartilaginous nodules in the synovium of facet spaces. Synovial chondromatosis affects many joints, the knee being the most common. The present report examined a 47-year-old male with symptoms of swelling and pain in the right knee, who was admitted to hospital in September 2015. Following admittance, arthroscopic explorations were conducted. Viscous fluid and multiple cartilage-like clumps were identified in the patient's joints during surgery...
May 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29724648/lumbar-synovial-cyst-with-chronic-viral-hepatitis-a-case-series-and-literature-review
#12
Sang Yoon Lee, Sohyun Kwon, Sun G Chung, Don-Kyu Kim, Shi-Uk Lee, Keewon Kim
Cystic dilatation of synovial sheath, one of the targets of extra-hepatic manifestations associated with liver disease, is a main pathologic finding of lumbar synovial cyst (LSC). However, LSCs are not well documented in correlation with chronic viral hepatitis. In this case series, three patients with chronic viral hepatitis presented with radiating pain in the unilateral lower extremities. On magnetic resonance imaging of the lumbar spine, all had unilateral LSCs at the facet joint of the lumbar spine. Two did not have definite spinal instability at the LSC level...
April 30, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29715228/cervical-facet-orientation-varies-with-age-in-children-an-mri-study
#13
Sebastien Pesenti, Renaud Lafage, Virginie Lafage, Michel Panuel, Benjamin Blondel, Jean-Luc Jouve
BACKGROUND: Within the spine, mobility and stability are principles that drive anatomic morphology. Based on radiographic measurements, the orientation of cervical facet joints has been proven to change throughout child growth. However, because of the mainly cartilaginous composition of the vertebrae in the young child, the lack of osseous landmarks makes radiograph-based measurements unreliable. The aims of our study were to evaluate the change in the sagittal orientation of the cervical facet joints with age based on magnetic resonance imaging (MRI) of asymptomatic children and to compare it to the changes in vertebral body dimensions...
May 2, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29713408/vertebral-lateral-notch-as-optimal-entry-point-for-lateral-mass-screwing-using-modified-roy-camille-technique
#14
Norio Yamamoto, Hirofumi Kosaka, Kosaku Higashino, Masatoshi Morimoto, Kazuta Yamashita, Fumitake Tezuka, Fumio Hayashi, Yoichiro Takata, Toshinori Sakai, Akihiro Nagamachi, Koichi Sairyo
Study Design: Retrospective study of 37 consecutive female patients with cervical spondylotic myelopathy who underwent reconstructed computed tomography (CT) scanning of the cervical spine. Purpose: The purpose of this study was to investigate whether the vertebral lateral notch of the cervical spine is an effective landmark to determine the entry point for lateral mass screwing. A modified Roy-Camille technique was used to determine the entry point associated with the lateral notch of the cervical spine...
April 2018: Asian Spine Journal
https://www.readbyqxmd.com/read/29710775/novel-ex-vivo-human-osteochondral-explant-model-of-knee-and-spine-osteoarthritis-enables-assessment-of-inflammatory-and-drug-treatment-responses
#15
Jeroen Geurts, Doria Jurić, Miriam Müller, Stefan Schären, Cordula Netzer
Osteoarthritis of the knee and spine is highly prevalent in modern society, yet a disease-modifying pharmacological treatment remains an unmet clinical need. A major challenge for drug development includes selection of appropriate preclinical models that accurately reflect clinical phenotypes of human disease. The aim of this study was to establish an ex vivo explant model of human knee and spine osteoarthritis that enables assessment of osteochondral tissue responses to inflammation and drug treatment. Equal-sized osteochondral fragments from knee and facet joints (both n = 6) were subjected to explant culture for 7 days in the presence of a toll-like receptor 4 (TLR4) agonist and an inhibitor of transforming growth factor-beta (TGF-β) receptor type I signaling...
April 28, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29709826/preliminary-female-cervical-spine-injury-risk-curves-from-pmhs-tests
#16
Narayan Yoganandan, Sajal Chirvi, Frank A Pintar, Jamie L Baisden, Anjishnu Banerjee
The human cervical spine sustains compressive loading in automotive events and military operational activities, and the contact and noncontact loading are the two primary impact modes. Biomechanical and anatomical studies have shown differences between male and female cervical spines. Studies have been conducted to determine the human tolerance in terms of forces from postmortem human subject (PMHS) specimens from male and female spines; however, parametric risk curves specific to female spines are not available from contact loading to the head-neck complex under the axial mode...
July 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29709553/chronic-pre-operative-opioid-use-is-a-risk-factor-for-increased-complications-resource-use-and-costs-after-cervical-fusion
#17
Nikhil Jain, John L Brock, Frank M Phillips, Tristan Weaver, Safdar N Khan
BACKGROUND CONTEXT: As healthcare transitions to value-based models, there has been an increased focus on patient factors that can influence peri- and post-operative adverse events, resource use, and costs. Many studies have reported risk factors for systemic complications after cervical fusion, but none have studied chronic opioid therapy (COT) as a risk factor. PURPOSE: To answer the following questions from a large cohort of patients who underwent primary cervical fusion for degenerative pathology: (1) What is the patient profile associated with pre-operative COT? (2) Is pre-operative COT a risk factor for 90-day systemic complications, emergency department (ED) visits, readmission, and one-year adverse events? (3) What are the risk factors and one-year adverse events related to long-term post-operative opioid use? and (4) How much did payers reimburse for management of complications and adverse events? STUDY DESIGN: Retrospective review of Humana commercial insurance data (2007-Q3 2015)...
April 27, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29705169/lumbar-epidural-varix-causing-radicular-pain-a-case-report-and-differential-diagnosis-of-lumbar-cystic-lesions
#18
Il-Kyu Im, Eun-Seok Son, Du Hwan Kim
Lumbar epidural varices are a rare cause of radicular pain mimicking lumbar disc herniation or other cyst-like masses including sequestrated disc herniation, facet joint synovial cyst, or perineural cyst. We report a case of a 36-year-old woman presenting with lumbar radicular pain caused by a lumbar epidural varix. Lumbar MRI revealed a cystic lesion in the ventral epidural space posterior to the right L4 body. Surgery was conducted and histopathology confirmed the diagnosis of an epidural varix. Lumbar epidural varices and other lumbar cystic lesions can commonly cause radicular pain...
April 26, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29700619/analysis-of-radiological-parameters-associated-with-decreased-fractional-anisotropy-values-on-diffusion-tensor-imaging-in-patients-with-lumbar-spinal-stenosis
#19
Xiandi Wang, Hongli Wang, Chi Sun, Shuyi Zhou, Tao Meng, Feizhou Lv, Xiaosheng Ma, Xinlei Xia, Jianyuan Jiang
PURPOSE: Previous studies have indicated that decreased fractional anisotropy (FA) values on diffusion tensor imaging (DTI) are well correlated with the symptoms of nerve root compression. The aim of our study is to determine primary radiological parameters associated with decreased FA values in patients with lumbar spinal stenosis involving single L5 nerve root. METHODS: Patients confirmed with single L5 nerve root compression by transforaminal nerve root blocks were included in this study...
April 26, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29699583/recurrent-upper-lumbar-disc-herniation-treated-via-the-transforaminal-approach-using-microendoscopy-assisted-lumbar-discectomy-a-case-report
#20
Yasutaka Takagi, Hiroshi Yamada, Hidehumi Ebara, Hiroyuki Hayashi, Satoshi Kidani, Kazu Toyooka, Yoshiyuki Kitano, Kenji Kagechika, Hiroyuki Tsuchiya
BACKGROUND: Although microendoscopy-assisted lumbar discectomy for lateral or extraforaminal lumbar disc herniations via the lateral approach has previously been reported, microendoscopy-assisted lumbar discectomy for central or paramedian disc herniations via the lateral approach has not been reported. We report the first case of recurrent upper lumbar disc herniation (L2-L3) treated with microendoscopy-assisted lumbar discectomy via the transforaminal approach. No microendoscopy-assisted lumbar discectomy for recurrent upper lumbar disc herniation via the transforaminal approach has previously been reported...
April 27, 2018: Journal of Medical Case Reports
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