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Slipped disc

Myung Soo Youn, Jong Ki Shin, Tae Sik Goh, Jung Sub Lee
BACKGROUND: Several different techniques exist to treat degenerative lumbar foraminal stenosis. Failure to adequately decompress the lumbar foramen may lead to failed back surgery syndrome. However, wide decompression often causes spinal instabilities or may require an additional fusion surgery. The aim of this study was to report the outcomes of endoscopic partial facetectomy (EPF) performed on patients with degenerative lumbar foraminal stenosis. METHODS: Between 2012 and 2014, 25 consecutive patients (12 women and 13 men) who underwent EPF were included in the study...
April 22, 2017: Acta Neurochirurgica
Peter Bella, Robert V Kohn
We consider a disc-shaped thin elastic sheet bonded to a compliant sphere. (Our sheet can slip along the sphere; the bonding controls only its normal displacement.) If the bonding is stiff (but not too stiff), the geometry of the sphere makes the sheet wrinkle to avoid azimuthal compression. The total energy of this system is the elastic energy of the sheet plus a (Winkler-type) substrate energy. Treating the thickness of the sheet h as a small parameter, we determine the leading-order behaviour of the energy as h tends to zero, and we give (almost matching) upper and lower bounds for the next-order correction...
May 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
Seiji Ohtori, Sumihisa Orita, Kazuyo Yamauchi, Yawara Eguchi, Yasuchika Aoki, Junichi Nakamura, Masayuki Miyagi, Miyako Suzuki, Gou Kubota, Kazuhide Inage, Takeshi Sainoh, Jun Sato, Kazuki Fujimoto, Yasuhiro Shiga, Koki Abe, Hiroto Kanamoto, Gen Inoue, Kazuhisa Takahashi, Takeo Furuya, Masao Koda
STUDY DESIGN: Retrospective case series. PURPOSE: The purpose of this study was to examine changes in the ligamentum flavum thickness and remodeling of the spinal canal after anterior fusion during a 10-year follow-up. OVERVIEW OF LITERATURE: Extreme lateral interbody fusion provides minimally invasive treatment of the lumbar spine; this anterior fusion without direct posterior decompression, so-called indirect decompression, can achieve pain relief...
February 2017: Asian Spine Journal
P Utriainen, A Vatanen, S Toiviainen-Salo, U Saarinen-Pihkala, O Mäkitie, K Jahnukainen
High-dose therapy and hematopoietic stem cell transplantation (HSCT) have been shown to improve survival rates in high-risk neuroblastoma (HR-NBL), but may cause adverse effects on the growing skeleton. We studied skeletal health in a national cohort of long-term survivors of HR-NBL (n=21; age 16-30 years, median 22 years) and in 20 healthy age- and sex-matched controls. In addition to clinical evaluation and measurement of bone mineral density (BMD) by dual-energy X-ray absorptiometry, we performed spinal magnetic resonance imaging...
January 9, 2017: Bone Marrow Transplantation
Masao Koda, Chikato Mannoji, Masazumi Murakami, Tomoaki Kinoshita, Jiro Hirayama, Tomohiro Miyashita, Yawara Eguchi, Masashi Yamazaki, Takane Suzuki, Masaaki Aramomi, Mitsutoshi Ota, Satoshi Maki, Kazuhisa Takahashi, Takeo Furuya
STUDY DESIGN: Retrospective case-control study. PURPOSE: To determine whether kissing spine is a risk factor for recurrence of sciatica after lumbar posterior decompression using a spinous process floating approach. OVERVIEW OF LITERATURE: Kissing spine is defined by apposition and sclerotic change of the facing spinous processes as shown in X-ray images, and is often accompanied by marked disc degeneration and decrement of disc height. If kissing spine significantly contributes to weight bearing and the stability of the lumbar spine, trauma to the spinous process might induce a breakdown of lumbar spine stability after posterior decompression surgery in cases of kissing spine...
December 2016: Asian Spine Journal
Suhair O Shebani, Rizwan Rehman, Demetris Taliotis, Alan Magee, Nicholas J Hayes, Osman Baspinar, Zunzunegui Martínez, Nikolaus Haas, Christopher Duke
To gather current experience in Occlutech ASD device retrieval, to determine whether snaring is an effective technique and to highlight alternative retrieval techniques; METHODS AND RESULTS: United Kingdom and European Occlutech ASD device implanters reported their experience in dealing with device embolization and retrieval. Six operators reported 12 retrieval cases. Retrieval was successful in 92% (11/12), although in most cases it was not straightforward and required multiple attempts using different techniques and equipment...
November 10, 2016: Catheterization and Cardiovascular Interventions
Nam Lee, Gyu Yeul Ji, Seong Yi, Do Heum Yoon, Dong Ah Shin, Keung Nyun Kim, Yoon Ha, Chang Hyun Oh
BACKGROUND: It is well documented that epidural adhesion is associated with spinal pain. However, the underlying mechanism of spinal pain generation by epidural adhesion has not yet been elucidated. OBJECTIVES: To elucidate the underlying mechanism of spinal pain generation by epidural adhesion using a two-dimensional (2D) non-linear finite element (FE) analysis. STUDY DESIGN: A finite element analysis. SETTING: A two-dimensional nonlinear FE model of the herniated lumbar disc on L4/5 with epidural adhesion...
2016: Pain Physician
Saher Abu-Leil, Yizhar Floman, Yigal Bronstein, Youssef Masharawi
PURPOSE: Most morphometric studies on lumbar degenerative spondylolisthesis (DS) have focused solely on the L4-L5 slipped level, neglecting the shape of the entire lumbar segments. The purpose of this study was to present a morphometric analysis of the entire lumbar IVDs and VBs in DS. METHODS: Out of 500 lumbar CTs, the first 100 CTs, 50 with DS at L4 and 50 age- and sex-matched control CTs, were randomly selected. All lumbar IVD and VB heights, widths, lengths and sagittal wedging as well as lumbar lordosis (LL) and sacral inclination (SI) were measured and relevant ratios calculated...
August 2016: European Spine Journal
Gregory D Schroeder, Cynthia R LaBella, Marco Mendoza, Erika L Daley, Jason W Savage, Alpesh A Patel, Wellington K Hsu
PURPOSE: To determine if adolescent athletics increases the risk of structural abnormalities in the lumbar spine. METHODS: A retrospective review of patients (ages 10-18) between 2004 and 2012 was performed. Pediatric patients with symptomatic low back pain, a lumbar spine MRI, and reported weekly athletic activity were included. Patients were stratified to an "athlete" and "non-athlete" group. Lumbar magnetic resonance and plain radiographic imaging was randomized, blinded, and evaluated by two authors for a Pfirrmann grade, herniated disc, and/or pars fracture...
September 2016: European Spine Journal
Shiro Imagama, Noriaki Kawakami, Tokumi Kanemura, Yuji Matsubara, Taichi Tsuji, Tetsuya Ohara, Yoshito Katayama, Naoki Ishiguro
STUDY DESIGN: Retrospective clinical study. OBJECTIVE: To investigate adjacent segment degeneration (ASD) at 5 years after L4/5 posterior lumbar interbody fusion (PLIF) with pedicle screw instrumentation and L4/5 decompression surgery using plain radiographs, CT and MRI, with evaluation of annual changes on MRI. SUMMARY OF BACKGROUND DATA: Methods of evaluation have been inconsistent among studies of ASD. There is no report that ASD in the lumbar spine after PLIF at the same level is thoroughly evaluated on radiographs, CT, annual MRI changes, and the impact of decompression procedures...
May 2, 2016: Clinical Spine Surgery
Hubertine Marjoleine Willems, Kevin Kos, Mary Ann Jabra-Rizk, Bastiaan P Krom
Streptococcus mutans is a Gram-positive bacterium involved in development to caries, the most common infectious disease of our time. Streptococcus mutans interacts with other microbes, like the fungus Candida albicans and both are commonly isolated from patients with caries. Since the role of C. albicans in caries remains unknown, our aim was to unravel this using an in vitro dual-species cariogenic oral biofilm model. Biofilms were grown for 24-72 h on glass cover slips or hydroxyapatite (HA) disks to mimic the surface of teeth...
July 2016: Pathogens and Disease
Ujjwal K Debnath, Atanu Chatterjee, Jeffrey R McConnell, Deepak K Jha, Tapas Chakraburtty
STUDY DESIGN: Prospective nonrandomized study. PURPOSE: To find a possible correlation between clinical outcome and extent of lumbar spondylolisthesis reduction. OVERVIEW OF LITERATURE: There is no consensus in the literature concerning whether a beneficial effect of reduction on outcome can be expected following reduction and surgical fusion for low grade lumbar spondylolisthesis. METHODS: Forty six patients with a mean age of 37...
April 2016: Asian Spine Journal
Claudio Vergari, Jessica Mansfield, Judith R Meakin, Peter C Winlove
UNLABELLED: The intervertebral disc is a multicomposite structure, with an outer fibrous ring, the annulus fibrosus, retaining a gel-like core, the nucleus pulposus. The disc presents complex mechanical behaviour, and it is of high importance for spine biomechanics. Advances in multiscale modelling and disc repair raised a need for new quantitative data on the finest details of annulus fibrosus mechanics. In this work we explored inter-lamella and inter-bundle behaviour of the outer annulus using micromechanical testing and second harmonic generation microscopy...
June 2016: Acta Biomaterialia
Antoine Nachanakian, Antonios El Helou, Moussa Alaywan
INTRODUCTION: Managements of lumbar stenosis evoluted over the time from decompression to dynamic stabilization preserving the motion segment passing by the rigid fixation. After long years of rigid fusion, adjacent segment disease became more and more frequent and the concept of dynamic stabilization emerged. MATERIALS AND METHODS: We report our experience with posterior dynamic stabilization using an interspinous distracter (ISD). One hundred and eight patients were operated between September 2008 and January 2012 with different lumbar spine pathologies...
April 2016: Asian Journal of Neurosurgery
Savitri Nilakanthan, Kashinath Metri, Nagaratna Raghuram, Nagendra Hongasandra
BACKGROUND: A significant number of women in India are suffering from hypothyroidism. Hypothyroidism is characterized by elevated lipid profiles and thyroid stimulation hormone (TSH). It leads many comorbid conditions such as coronary artery disease, obesity, depression, osteoporosis, sleep apnea, and etc. Yoga is proven to be effective in reducing weight, dyslipidemia, depression and it brings the balance in autonomous nervous system. We aimed to study the effect of 6 months yoga practice on lipid profile, thyroxine requirement and serum TSH in women suffering from hypothyroidism...
June 1, 2016: Journal of Complementary & Integrative Medicine
Shugo Kuraishi, Jun Takahashi, Keijiro Mukaiyama, Masayuki Shimizu, Shota Ikegami, Toshimasa Futatsugi, Hiroki Hirabayashi, Nobuhide Ogihara, Hiroyuki Hashidate, Yutaka Tateiwa, Hisatoshi Kinoshita, Hiroyuki Kato
STUDY DESIGN: Multicenter analysis of two groups of patients surgically treated for degenerative L4 unstable spondylolisthesis. PURPOSE: To compare the clinical and radiographic outcomes of posterolateral fusion (PLF) and posterior lumbar interbody fusion (PLIF) for degenerative L4 unstable spondylolisthesis. OVERVIEW OF LITERATURE: Surgery for lumbar degenerative spondylolisthesis is widely performed. However, few reports have compared the outcome of PLF to that of PLIF for degenerative L4 unstable spondylolisthesis...
February 2016: Asian Spine Journal
Jason Pui Yin Cheung, Prudence Wing Hang Cheung, Kenneth Man Chee Cheung, Keith Dip Kei Luk
STUDY DESIGN: Retrospective series. PURPOSE: Assess results of decompression-only surgery for low-grade degenerative spondylolisthesis with consideration of instability. OVERVIEW OF LITERATURE: There is no consensus on whether fusion or decompression-only surgery leads to better outcomes for patients with low-grade degenerative spondylolisthesis. Current trends support fusion but many studies are flawed due to over-generalization without consideration of radiological instability and their variable presentations and natural history...
February 2016: Asian Spine Journal
Se Ho Jeong, Hyeun Sung Kim, Seok Won Kim
OBJECTIVE: The purpose of this study was to evaluate the surgical technique and outcome of mini-open posterior lumbar interbody fusion (PLIF) under circumferential releasing technique. METHODS: Fourty patients who underwent mini-open PLIF using the percutaneous screw fixation system for Meyerding Grade II spondylolisthesis or more were retrospectively studied. After complete circumferential release, the slipped vertebrae would tend to obtain spontaneous reduction, and with compressive force by percutaneous screw fixation, additional reduction could be achieved...
December 2015: Korean Journal of Spine
Daniel M Skrzypiec, Katrin Nagel, Kay Sellenschloh, Anke Klein, Klaus Püschel, Michael M Morlock, Gerd Huber
An in-vitro experiment was designed to investigate the mode of failure following shear fatigue loading of lumbar motion-segments. Human male lumbar motion-segments (age 32-42 years, n=6) were immersed in Ringer solution at 37°C and repeatedly loaded, using a modified materials testing machine. Fatigue loading consisted of a sinusoidal shear load from 0 N to 1,500 N (750 N±750 N) applied to the upper vertebra of the motion-segment, at a frequency of 5 Hz. During fatigue experiments, several failure events were observed in the dynamic creep curves...
August 5, 2016: Industrial Health
Gen Mori, Yasuo Mikami, Yuji Arai, Takumi Ikeda, Masateru Nagae, Hitoshi Tonomura, Ryota Takatori, Koshiro Sawada, Hiroyoshi Fujiwara, Toshikazu Kubo
OBJECT: There are reports that fusion is the standard treatment of choice for cases of lumbar degenerative spondylolisthesis (LDS) associated with lumbar spinal canal stenosis with a large degree of slippage. The reasons why, however, have not been clarified. On the other hand, it is known that the progress of slippage decreases and restabilization occurs over the natural course of LDS. Therefore, if minimally invasive decompression could be performed, there would be little possibility of it influencing the natural course of LDS, so it would not be necessary to include preoperative percentage slip in the criteria for the selection of fusion...
March 2016: Journal of Neurosurgery. Spine
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