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https://www.readbyqxmd.com/read/29141662/safety-and-tolerability-of-intradiscal-implantation-of-combined-autologous-adipose-derived-mesenchymal-stem-cells-and-hyaluronic-acid-in-patients-with-chronic-discogenic-low-back-pain-1-year-follow-up-of-a-phase-i-study
#1
Hemant Kumar, Doo-Hoe Ha, Eun-Jong Lee, Jun Hee Park, Jeong Hyun Shim, Tae-Keun Ahn, Kyoung-Tae Kim, Alexander E Ropper, Seil Sohn, Chung-Hun Kim, Devang Kashyap Thakor, Soo-Hong Lee, In-Bo Han
BACKGROUND: Adipose tissue-derived mesenchymal stem cells (AT-MSCs) offer potential as a therapeutic option for chronic discogenic low back pain (LBP) because of their immunomodulatory functions and capacity for cartilage differentiation. The goal of this study was to assess the safety and tolerability of a single intradiscal implantation of combined AT-MSCs and hyaluronic acid (HA) derivative in patients with chronic discogenic LBP. METHODS: We performed a single-arm phase I clinical trial with a 12-month follow-up and enrolled 10 eligible chronic LBP patients...
November 15, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29128087/-platelet-rich-plasma-prp-and-disc-lesions-a-review-of-the-literature
#2
REVIEW
L Charneux, C Demoulin, M Vanderthomment, M Tomasella, M-A Ferrara, S Grosdent, S Bethlen, R Fontaine, P Gillet, T Racaru, J-F Kaux
The spine has been the subject of extensive clinical research since it is the source of many painful complaints. However, there is little scientific evidence concerning the therapeutic proposals. During the course of life, the intervertebral disc degenerates, which over time diminishes its damping capacity and facilitates the expulsion of the nucleus pulposus through the annulus fibrosus. The degeneration of the intervertebral disc (DDI) is the origin of some back pain and various specific treatments have been developed...
November 8, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29106896/the-rib-cage-reduces-intervertebral-disc-pressures-in-cadaveric-thoracic-spines-by-sharing-loading-under-applied-dynamic-moments
#3
Dennis E Anderson, Erin M Mannen, Rebecca Tromp, Benjamin M Wong, Hadley L Sis, Eileen S Cadel, Elizabeth A Friis, Mary L Bouxsein
The effects of the rib cage on thoracic spine loading are not well studied, but the rib cage may provide stability or share loads with the spine. Intervertebral disc pressure provides insight into spinal loading, but such measurements are lacking in the thoracic spine. Thus, our objective was to examine thoracic intradiscal pressures under applied pure moments, and to determine the effect of the rib cage on these pressures. Human cadaveric thoracic spine specimens were positioned upright in a testing machine, and Dynamic pure moments (0 to ±5 N·m) with a compressive follower load of 400 N were applied in axial rotation, flexion - extension, and lateral bending...
October 12, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29092070/radiopaque-gelified-ethanol-application-in-lumbar-intervertebral-soft-disc-herniations-croatian-multicentric-study
#4
Karlo Houra, Darko Perovic, Ivan Rados, Drazen Kvesic
Objective: Minimally invasive percutaneous spinal procedures are popular in trying to reduce spinal pain. The aim of this paper is to evaluate the safety of intervertebral disc chemonucleolysis and to report the effectiveness of a percutaneous, minimally invasive treatment for contained herniated intervertebral discs in the lumbar spine using the recently marketed radiopaque gelified ethanol. Methods: Pain relief before and after the procedure was self-evaluated by each patient using a verbal numeric scale (VNS) ranging from 0 to 10...
October 28, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29080003/percutaneous-posterolateral-approach-for-the-simulation-of-a-far-lateral-disc-herniation-in-an-ovine-model
#5
Stefan Schwan, Christopher Ludtka, Ingo Wiesner, Andre Baerthel, Andrea Friedmann, Felix Göhre
PURPOSE: This work describes a minimally invasive damage model for ovine lumbar discs via partial nucleotomy using a posterolateral approach. METHODS: Two cadavers were dissected to analyze the percutaneous corridor. Subsequently, 28 ovine had their annulus fibrosus punctured via awl penetration under fluoroscopic control and nucleus pulposus tissue removed via rongeur. Efficacy was assessed by animal morbidity, ease of access to T12-S1 disc spaces, and production of a mechanical injury as verified by discography, radiography, and histology...
October 27, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29065672/the-effects-of-physiological-biomechanical-loading-on-intradiscal-pressure-and-annulus-stress-in-lumbar-spine-a-finite-element-analysis
#6
Siti Nurfaezah Zahari, Mohd Juzaila Abd Latif, Nor Raihanah Abdull Rahim, Mohammed Rafiq Abdul Kadir, Tunku Kamarul
The present study was conducted to examine the effects of body weight on intradiscal pressure (IDP) and annulus stress of intervertebral discs at lumbar spine. Three-dimensional finite element model of osseoligamentous lumbar spine was developed subjected to follower load of 500 N, 800 N, and 1200 N which represent the loads for individuals who are normal and overweight with the pure moments at 7.5 Nm in flexion and extension motions. It was observed that the maximum IDP was 1.26 MPa at L1-L2 vertebral segment...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29065645/effect-of-graded-facetectomy-on-lumbar-biomechanics
#7
Zhi-Li Zeng, Rui Zhu, Yang-Chun Wu, Wei Zuo, Yan Yu, Jian-Jie Wang, Li-Ming Cheng
Facetectomy is an important intervention for spinal stenosis but may lead to spinal instability. Biomechanical knowledge for facetectomy can be beneficial when deciding whether fusion is necessary. Therefore, the aim of this study was to investigate the biomechanical effect of different grades of facetectomy. A three-dimensional nonlinear finite element model of L3-L5 was constructed. The mobility of the model and the intradiscal pressure (IDP) of L4-L5 for standing were inside the data from the literature...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29065628/the-effect-of-lumbar-disc-herniation-on-spine-loading-characteristics-during-trunk-flexion-and-two-types-of-picking-up-activities
#8
Shengzheng Kuai, Weiqiang Liu, Run Ji, Wenyu Zhou
The main purpose of this study was to investigate the compensatory response of the muscle activities of seventeen major muscle groups in the spinal region, intradiscal forces of the five lumbar motion segment units (MSUs), and facet forces acting on the ten lumbar facet joints in patients with lumbar disc herniation (LDH). Twenty-six healthy adults and seven LDH patients performed trunk flexion, ipsilateral picking up, and contralateral picking up in sequence. Eight optical markers were placed on the landmarks of the pelvis and spinal process...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29038672/safety-analysis-of-autologous-stem-cell-therapy-in-a-variety-of-degenerative-diseases-and-injuries-using-the-stromal-vascular-fraction
#9
Kristin Comella, Michelle Parlo, Rosemary Daly, Vincent Depasquale, Eric Edgerton, Patrick Mallory, Roy Schmidt, Walter P Drake
BACKGROUND: Stem cells from adipose tissue offer a novel therapy for patients with damaged tissue. Stromal vascular fraction (SVF) injected into patients may reduce inflammation, promote healing, and repair damaged/scarred tissue. SVF can be isolated from fat (adipose) tissue in an outpatient procedure. The SVF population includes mesenchymal stem cells (MSCs), pericytes, endothelial/progenitor cells, fibroblasts and growth factors where the adipocyte (fat cell) population has been removed...
November 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29019902/in-vitro-biomechanical-comparison-after-fixed-and-mobile-core-artificial-cervical-disc-replacement-versus-fusion
#10
COMPARATIVE STUDY
Jigang Lou, Yuanchao Li, Beiyu Wang, Yang Meng, Tingkui Wu, Hao Liu
In vitro biomechanical analysis after cervical disc replacement (CDR) with a novel artificial disc prosthesis (mobile core) was conducted and compared with the intact model, simulated fusion, and CDR with a fixed-core prosthesis. The purpose of this experimental study was to analyze the biomechanical changes after CDR with a novel prosthesis and the differences between fixed- and mobile-core prostheses.Six human cadaveric C2-C7 specimens were biomechanically tested sequentially in 4 different spinal models: intact specimens, simulated fusion, CDR with a fixed-core prosthesis (Discover, DePuy), and CDR with a mobile-core prosthesis (Pretic-I, Trauson)...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28958435/increased-spinal-height-using-propped-slouched-sitting-postures-innovative-ways-to-rehydrate-intervertebral-discs
#11
John L Pape, Jean-Michel Brismée, Phillip S Sizer, Omer C Matthijs, Kevin L Browne, Birendra M Dewan, Stéphane Sobczak
BACKGROUND: Upright and slouched sitting are frequently adopted postures associated with increased intradiscal pressure, spinal height loss and intervertebral disc pathology. OBJECTIVES: To examine the effects of two sustained propped slouched sitting (PSS) postures on spinal height after a period of trunk loading. METHODS: Thirty-four participants without a history of low back pain (LBP) were recruited (age 24.4 ± 1.6 years). Subjects sat in (1) PSS without lumbar support and (2) PSS with lumbar support for 10 min, after a period of trunk loading...
January 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/28952779/clinical-outcome-and-subsequent-sequelae-of-cement-extravasation-after-percutaneous-kyphoplasty-and-vertebroplasty-a-comparative-review
#12
Hassan Semaan, Tawfik Obri, Mohamad Bazerbashi, Daniel Paull, Xiaochen Liu, Marah Sarrouj, Hossein Elgafy
Background Injection of cement during vertebroplasty and kyphoplasty can leak into surrounding structures and could be symptomatic. Purpose To identify the sites and incidence of cement extravasation after kyphoplasty and vertebroplasty, and to evaluate their impacts on clinical outcomes. Material and Methods A retrospective review of 316 patients treated with kyphoplasty and vertebroplasty; 411 cases were included (223 kyphoplasty and 188 vertebroplasty). Cement extravasation was evaluated postoperatively by computed tomography (CT) scan of the spine...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28943155/is-bone-density-associated-with-intervertebral-disc-pressure-in-healthy-and-degenerated-discs
#13
Paul M Fein, Alexander DelMonaco, Timothy M Jackman, Cameron Curtiss, Ali Guermazi, Glenn D Barest, Elise F Morgan
The coupling of the intervertebral disc (IVD) and vertebra as a biomechanical unit suggests that changes in the distribution of pressure within the IVD (intradiscal pressure, IDP) as a result of disc degeneration can influence the distribution of bone density within the vertebra, and vice versa. The goal of this study was to assess the correspondence between IDP and bone density in the adjacent vertebrae, with emphasis on how this correspondence differs between healthy and degenerated IVDs. Bone density of the endplates and subchondral bone in regions adjacent to the anterior and posterior annulus fibrosus (aAF and pAF, respectively) and nucleus pulposus (NP) was measured via quantitative computed tomography (QCT) in 61 spine segments (T7-9, T9-11, T10-12; 71±14years)...
September 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28938891/treatment-of-lumbar-degenerative-disc-disease-associated-radicular-pain-with-culture-expanded-autologous-mesenchymal-stem-cells-a-pilot-study-on-safety-and-efficacy
#14
Christopher Centeno, Jason Markle, Ehren Dodson, Ian Stemper, Christopher J Williams, Matthew Hyzy, Thomas Ichim, Michael Freeman
BACKGROUND: Degenerative disc disease (DDD) is a common cause of lower back pain with radicular symptoms and has a significant socioeconomic impact given the associated disability. Limited effective conservative therapeutic options result in many turning to surgical alternatives for management, which vary in the rate of success and also carry an increased risk of morbidity and mortality associated with the procedures. Several animal based studies and a few human pilot studies have demonstrated safety and suggest efficacy in the treatment of DDD with mesenchymal stem cells (MSCs)...
September 22, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28937328/biomechanical-effects-of-hybrid-stabilization-on-the-risk-of-proximal-adjacent-segment-degeneration-following-lumbar-spinal-fusion-using-an-interspinous-device-or-a-pedicle-screw-based-dynamic-fixator
#15
Chang-Hyun Lee, Young Eun Kim, Hak Joong Lee, Dong Gyu Kim, Chi Heon Kim
OBJECTIVE Pedicle screw-rod-based hybrid stabilization (PH) and interspinous device-based hybrid stabilization (IH) have been proposed to prevent adjacent-segment degeneration (ASD) and their effectiveness has been reported. However, a comparative study based on sound biomechanical proof has not yet been reported. The aim of this study was to compare the biomechanical effects of IH and PH on the transition and adjacent segments. METHODS A validated finite element model of the normal lumbosacral spine was used...
September 22, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28935976/tgf-%C3%AE-1-suppresses-ccl3-4-expression-through-the-erk-signaling-pathway-and-inhibits-intervertebral-disc-degeneration-and-inflammation-related-pain-in-a-rat-model
#16
Jian Zhang, Zemin Li, Fan Chen, Hui Liu, Hua Wang, Xiang Li, Xianguo Liu, Jianru Wang, Zhaomin Zheng
The objective of this study was to investigate the regulatory effects of TGF-β1 on CCL3/4 expression and inflammation-related pain during intervertebral disc degeneration (IVDD). TGF-β1 and CCL3/4 expression patterns in different degenerative human nucleus pulposus (NP) tissues were measured by qPCR and immunohistochemistry (IHC), and the effects of TGF-β1 on CCL3/4 expression were measured by qPCR, ELISA and immunofluorescence. The roles of NF-κB and MAPK in TGF-β1-mediated CCL3/4 promoter activity were studied using siRNAs, western blotting and qPCR...
September 22, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28934777/effectiveness-of-thermal-annular-procedures-in-treating-discogenic-low-back-pain
#17
Standiford Helm Ii, Thomas T Simopoulos, Milan Stojanovic, Salahadin Abdi, Mohamed Ahamed El Terany
BACKGROUND: Discogenic low back is a distinct clinic entity characterized by pain arising from a damaged disc. The diagnosis is clouded by the controversy surrounding discography. The treatment options are limited, with unsatisfactory results from both conservative treatment and surgery. Multiple interventional therapies have been developed to treat discogenic pain, but most have not yet been validated by high quality studies.The best studied treatment for discogenic pain is the use of heat, which has been labeled as thermal intradiscal procedures (TIPs) by the Centers for Medicare and Medicaid Services (CMS)...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28898530/a-cost-effectiveness-analysis-of-intradiscal-electrothermal-therapy-idet-compared-with-circumferential-lumbar-fusion
#18
Eugena Stamuli, Withawin Kesornsak, Michael P Grevitt, John Posnett, Karl Claxton
STUDY DESIGN: Cost-effectiveness analysis. OBJECTIVE: To evaluate the cost-effectiveness of intradiscal electrothermal therapy (IDET) relative to circumferential lumbar fusion with femoral ring allograft (FRA) in UK. SUMMARY OF BACKGROUND DATA: Circumferential lumbar fusion is an established treatment for discogenic low back pain. However, IDET could be a cost-effective treatment alternative as it can be carried out as a day case. METHODS: Patient-level data were available for patients with discogenic low back pain treated with FRA (n=37) in a randomized trial of FRA vs titanium cage, and for patients recruited to a separate study evaluating the use of IDET (n=85)...
September 12, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28874973/inhibiting-vascular-endothelial-growth-factor-in-injured-intervertebral-discs-attenuates-pain-related-neuropeptide-expression-in-dorsal-root-ganglia-in-rats
#19
Jun Sato, Kazuhide Inage, Masayuki Miyagi, Yoshihiro Sakuma, Kazuyo Yamauchi, Masao Koda, Takeo Furuya, Junichi Nakamura, Miyako Suzuki, Go Kubota, Yasuhiro Oikawa, Takeshi Sainoh, Kazuki Fujimoto, Yasuhiro Shiga, Koki Abe, Hirohito Kanamoto, Masahiro Inoue, Hideyuki Kinoshita, Masaki Norimoto, Tomotaka Umimura, Kazuhisa Takahashi, Seiji Ohtori, Sumihisa Orita
STUDY DESIGN: An experimental animal study. PURPOSE: To evaluate effects of anti-vascular endothelial growth factor (VEGF) on the content and distribution of the calcitonin gene-related peptide (CGRP) in the dorsal ganglia in a rat model. OVERVIEW OF LITERATURE: Increased expression of VEGF in degenerative disc disease increases the levels of inflammatory cytokines and nerve ingrowth into the damaged discs. In animal models, increased levels of VEGF can persist for up to 2 weeks after an injury...
August 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28859858/obesity-and-spinal-loads-a-combined-mr-imaging-and-subject-specific-modeling-investigation
#20
M H Akhavanfar, H Kazemi, A H Eskandari, N Arjmand
Epidemiological studies have identified obesity asa possible risk factor for low back disorders. Biomechanical models can help test such hypothesis and shed light on the mechanism involved. A novel subject-specific musculoskeletal-modelling approach is introduced to estimate spinal loads during static activities in five healthy obese (BMI>30kg/m(2)) and five normal-weight (20<BMI<25kg/m(2)) individuals. Subjects underwent T1 through S1 MR imaging thereby measuring cross-sectional-area (CSA) and moment arms of trunk muscles together with mass and center of mass (CoM) of T1-L5 segments...
August 20, 2017: Journal of Biomechanics
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