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SPONDYLOLISTHESIS MECHANISM

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https://www.readbyqxmd.com/read/28527756/radiological-lumbar-stenosis-severity-predicts-worsening-sagittal-malalignment-on-full-body-standing-stereoradiographs
#1
Aaron J Buckland, Subaraman Ramchandran, Louis Day, Shay Bess, Themistocles Protopsaltis, Peter G Passias, Bassel G Diebo, Renaud Lafage, Virginie Lafage, Akhila Sure, Thomas J Errico
BACKGROUND CONTEXT: Patients with degenerative lumbar stenosis (DLS) adopt a forward flexed posture in an attempt to decompress neural elements. The relationship between sagittal alignment and severity of lumbar stenosis has not previously been studied. PURPOSE: We hypothesized that patients with increasing radiological severity of lumbar stenosis will exhibit worsening sagittal alignment. STUDY DESIGN: This is a cross-sectional study. PATIENT SAMPLE: Our sample consists of patients who have DLS...
May 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28506227/associations-between-disc-space-narrowing-anterior-osteophytes-and-disability-in-chronic-mechanical-low-back-pain-a-cross-sectional-study
#2
Romain Shanil Perera, Poruwalage Harsha Dissanayake, Upul Senarath, Lalith Sirimevan Wijayaratne, Aranjan Lional Karunanayake, Vajira Harshadeva Weerabaddana Dissanayake
BACKGROUND: Radiographic features of lumbar disc degeneration (LDD) are common findings in patients with chronic mechanical low back pain; however, its role in disability and intensity of pain is debatable. This study aims to investigate the associations of the x-ray features of LDD and lumbar spondylolisthesis with severity of disability and intensity of pain. METHODS: A cross-sectional study was conducted on 439 patients with chronic mechanical low back pain who attended the rheumatology clinic, National Hospital of Sri Lanka, Colombo, from May 2012 to May 2014...
May 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28435923/bone-bridge-formation-across-the-neuroforamen-14-years-after-instrumented-fusion-for-isthmic-spondylolisthesis-a-case-report
#3
Joel Louis Lim, Kimberly-Anne Tan, Hwee Weng Dennis Hey
This case report describes the first case of a bone bridge formation across the left L5/S1 neuroforamen after instrumented posterolateral fusion for L5/S1 isthmic spondylolisthesis. Our patient was a 70-year-old lady who had grade 2, L5/S1 isthmic spondylolisthesis and bilateral S1 nerve root compression. She suffered from mechanical low back pain and neurogenic claudication, with radicular pain over both S1 dermatomes. She underwent in-situ, instrumented, posterolateral fusion and was asymptomatic for more than 13 years before developing progressive onset of left radicular pain over the L5 dermatome...
March 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28368984/degenerative-spondylolisthesis-is-related-to-multiparity-and-hysterectomies-in-older-women
#4
Jacek Cholewicki, Angela S Lee, John M Popovich, Lawrence W Mysliwiec, Michael D Winkelpleck, John N Flood, Pramod K Pathak, Kiilani H Kaaikala, N Peter Reeves, Ralph Kothe
STUDY DESIGN: A case-control study OBJECTIVE.: To determine whether parity and abdominal surgeries are associated with degenerative spondylolisthesis (DS). SUMMARY OF BACKGROUND DATA: DS is considered to be a major cause of low back pain (LBP) in the older population, with greater prevalence of DS among women. Because LBP and impaired abdominal muscle function are common during pregnancy and post-partum, parity-related abdominal muscle deficiency, resulting in poor spinal mechanics, could be a factor in the development of DS in women...
March 31, 2017: Spine
https://www.readbyqxmd.com/read/28358974/the-impact-of-lumbar-spine-disease-and-deformity-on-total-hip-arthroplasty-outcomes
#5
Daniel J Blizzard, Charles Z Sheets, Thorsten M Seyler, Colin T Penrose, Mitchell R Klement, Michael A Gallizzi, Christopher R Brown
Concomitant spine and hip disease in patients undergoing total hip arthroplasty (THA) presents a management challenge. Degenerative lumbar spine conditions are known to decrease lumbar lordosis and limit lumbar flexion and extension, leading to altered pelvic mechanics and increased demand for hip motion. In this study, the effect of lumbar spine disease on complications after primary THA was assessed. The Medicare database was searched from 2005 to 2012 using International Classification of Diseases, Ninth Revision, procedure codes for primary THA and diagnosis codes for preoperative diagnoses of lumbosacral spondylosis, lumbar disk herniation, acquired spondylolisthesis, and degenerative disk disease...
May 1, 2017: Orthopedics
https://www.readbyqxmd.com/read/28338454/impact-of-preoperative-diagnosis-on-patient-satisfaction-following-lumbar-spine-surgery
#6
Charles H Crawford, Leah Y Carreon, Mohamad Bydon, Anthony L Asher, Steven D Glassman
OBJECTIVE Patient satisfaction is a commonly used metric in the current health care environment. While factors that affect patient satisfaction following spine surgery are complex, the authors of this study hypothesized that specific diagnostic groups of patients are more likely to be satisfied after spine surgery and that this is reflected in patient-reported outcome measures. The purpose of this study was to determine if the preoperative diagnosis-disc herniation, stenosis, spondylolisthesis, adjacent segment degeneration, or mechanical disc collapse-would impact patient satisfaction following surgery...
March 24, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28250641/traumatic-high-grade-spondylolisthesis-at-c7-t1-with-no-neurological-deficits-case-series-literature-review-and-biomechanical-implications
#7
Ha Son Nguyen, Hesham Soliman, Shekar Kurpad
Traumatic high-grade spondylolisthesis in subaxial cervical spine is frequently associated with acute spinal cord injury and quadriparesis. There have been rare cases where such pathology demonstrates minimal to no neurological deficits. Assessment of the underlying biomechanics may provide insight into the mechanism of injury and associated neurological preservation. Patient 1 is a 63-year-old female presenting after a motor vehicle collision with significant right arm pain without neurological deficits. Imaging demonstrated C7/T1 spondyloptosis, associated with a locked facet on the left at C6/7 and a locked facet on the right at C7/T1, with a fracture of the left C7 pedicle and right C7 lamina...
January 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28249826/endoscopic-surgical-treatment-of-lumbar-synovial-cyst
#8
Joachim M Oertel, Benedikt W Burkhardt
BACKGROUND: Lumbar synovial cysts (LSC) are an uncommon cause of radiculopathy and back pain. The open surgical treatment is associated with extensive bone resection and muscle trauma. The endoscopic tubular assisted LSC resection has not been described in detail. Here the authors assessed the effectiveness of this technique for LSC resection. METHODS: Eleven patients (4 female and 7 male patients) were operated on via an ipsilateral approach for resection of LSC using an endoscopic tubular retractor system...
February 26, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28245271/association-between-vertebral-cross-sectional-area-and-lumbar-lordosis-angle-in-adolescents
#9
Tishya A L Wren, Patricia C Aggabao, Ervin Poorghasamians, Thomas A Chavez, Skorn Ponrartana, Vicente Gilsanz
Lumbar lordosis (LL) is more prominent in women than in men, but the mechanisms responsible for this discrepancy are poorly defined. A recent study indicates that newborn girls have smaller vertebral cross-sectional area (CSA) when compared to boys-a difference that persists throughout life and is independent of body size. We determined the relations between vertebral cross-sectional area (CSA) and LL angle and whether sex differences in lumbar lordosis are related to sex differences in vertebral CSA. Using multi-planar magnetic resonance imaging (MRI), we measured vertebral cross-sectional area (CSA) and vertebral height of the spine of 40 healthy boys and 40 girls, ages 9-13 years...
2017: PloS One
https://www.readbyqxmd.com/read/28186832/a-comprehensive-review-of-pulsed-radiofrequency-in-the-treatment-of-pain-associated-with-different-spinal-conditions
#10
REVIEW
Giancarlo Facchini, Paolo Spinnato, Giuseppe Guglielmi, Ugo Albisinni, Alberto Bazzocchi
OBJECTIVE: The objective of this review was to evaluate the efficacy of pulsed radiofrequency (PRF) treatment of pain associated with different spinal conditions. The mechanisms of action and biological effects are shortly discussed to provide the scientific basis for this radiofrequency modality. METHODS: We systematically searched for clinical studies on spinal clinical conditions using PRF. We searched the MEDLINE (PubMed) database. We classified the information in one table focusing on randomized controlled trials (RCTs) and other types of studies...
May 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28060176/bone-morphogenetic-proteins-in-pediatric-spinal-arthrodesis-a-statewide-analysis-of-trends-and-outcome-of-utilization
#11
Benedict U Nwachukwu, William W Schairer, Ting Pan, Roger F Widmann, John S Blanco, Daniel W Green, Stephen Lyman, Emily R Dodwell
INTRODUCTION: Bone morphogenetic protein (BMP) is considered off-label when used to augment spinal arthrodesis in children and adolescents. There is a paucity of longer-term information on BMP use in this population. The purpose of this study was to determine the rate of BMP utilization in pediatric spinal arthrodesis, assess factors associated with BMP use in this population, and evaluate long-term outcome. METHODS: Spinal arthrodeses in patients 18 years and younger performed in New York State between 2004 and 2014 were identified through the Statewide Planning and Research Cooperative System database...
January 5, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28052066/effects-of-strontium-ranelate-on-spinal-interbody-fusion-surgery-in-an-osteoporotic-rat-model
#12
Tsung-Ting Tsai, Ching-Lung Tai, Natalie Yi-Ju Ho, Po-Liang Lai, Tsai-Sheng Fu, Chi-Chien Niu, Lih-Huei Chen, Wen-Jer Chen
Osteoporosis is a bone disease that afflicts millions of people around the world, and a variety of spinal integrity issues, such as degenerative spinal stenosis and spondylolisthesis, are frequently concomitant with osteoporosis and are sometimes treated with spinal interbody fusion surgery. Previous studies have demonstrated the efficacy of strontium ranelate (SrR) treatment of osteoporosis in improving bone strength, promoting bone remodeling, and reducing the risk of fractures, but its effects on interbody fusion surgery have not been adequately investigated...
2017: PloS One
https://www.readbyqxmd.com/read/27918892/the-effects-of-muscle-weakness-on-degenerative-spondylolisthesis-a-finite-element-study
#13
Rui Zhu, Wen-Xin Niu, Zhi-Li Zeng, Jian-Hua Tong, Zhi-Wei Zhen, Shuang Zhou, Yan Yu, Li-Ming Cheng
BACKGROUND: Whether muscle weakness is a cause, or result, of degenerative spondylolisthesis is not currently well understood. Little biomechanical evidence is available to offer an explanation for the mechanism behind exercise therapy. Therefore, the aim of this study is to investigate the effects of back muscle weakness on degenerative spondylolisthesis and to tease out the biomechanical mechanism of exercise therapy. METHODS: A nonlinear 3-D finite element model of L3-L5 was constructed...
November 26, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/27861359/characterization-of-radiographic-features-of-consecutive-lumbar-spondylolisthesis
#14
Yapeng Sun, Hui Wang, Dalong Yang, Nan Zhang, Sidong Yang, Wei Zhang, Wenyuan Ding
Radiographic features of consecutive lumbar spondylolisthesis were retrospectively analyzed in a total of 17 patients treated for this condition at the Third Hospital of Hebei Medical University from June 2005 to March 2012.To investigate the radiographic features, pelvic compensatory mechanisms, and possible underlying etiologies of consecutive lumbar spondylolisthesis.To the best of our knowledge, there is no previous report concerning the characteristics of consecutive lumbar spondylolisthesis.The Taillard index and the lumbar lordosis (LL), pelvic incidence (PI), sacrum slope (SS), and pelvic tilt (PT) were determined on lateral X-ray images, and the angular displacement was analyzed on flexion-extension X-ray images...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27733227/etiology-for-degenerative-disc-disease
#15
REVIEW
Dhungana Hemanta, Xiao-Xing Jiang, Zhen-Zhou Feng, Zi-Xian Chen, Yuan-Wu Cao
Degenerative disc disease is a multifaceted progressive irreversible condition and an inevitable part of aging, which has been found to be a contributing factor for low back pain and might cause radiculopathy, myelopathy, spinal stenosis, degenerative spondylolisthesis, and herniations. Its etiology is complex and multifactorial. Although genetics influence more dominant, the occupational and mechanical influences still persist as a major risk factor. This review emphasizes up-to-date knowledge regarding etiology of disc degeneration with special consideration on occupational, lifestyle factors, and genetic polymorphisms...
September 20, 2016: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
https://www.readbyqxmd.com/read/27683674/lumbar-interbody-fusion-techniques-indications-and-comparison-of-interbody-fusion-options-including-plif-tlif-mi-tlif-olif-atp-llif-and-alif
#16
REVIEW
Ralph J Mobbs, Kevin Phan, Greg Malham, Kevin Seex, Prashanth J Rao
Degenerative disc and facet joint disease of the lumbar spine is common in the ageing population, and is one of the most frequent causes of disability. Lumbar spondylosis may result in mechanical back pain, radicular and claudicant symptoms, reduced mobility and poor quality of life. Surgical interbody fusion of degenerative levels is an effective treatment option to stabilize the painful motion segment, and may provide indirect decompression of the neural elements, restore lordosis and correct deformity. The surgical options for interbody fusion of the lumbar spine include: posterior lumbar interbody fusion (PLIF), transforaminal lumbar interbody fusion (TLIF), minimally invasive transforaminal lumbar interbody fusion (MI-TLIF), oblique lumbar interbody fusion/anterior to psoas (OLIF/ATP), lateral lumbar interbody fusion (LLIF) and anterior lumbar interbody fusion (ALIF)...
December 2015: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/27580478/biomechanical-evaluation-of-lumbar-decompression-adjacent-to-instrumented-segments
#17
Peter Grunert, Phillip M Reyes, Anna G U S Newcomb, Sara B Towne, Brian P Kelly, Nicholas Theodore, Roger Härtl
BACKGROUND: Multilevel lumbar stenosis, in which 1 level requires stabilization due to spondylolisthesis, is routinely treated with multilevel open laminectomy and fusion. We hypothesized that a minimally invasive (MI) decompression is biomechanically superior to open laminectomy and may allow decompression of the level adjacent the spondylolisthesis without additional fusion. OBJECTIVE: To study the mechanical effect of various decompression procedures adjacent to instrumented segments in cadaver lumbar spines...
December 2016: Neurosurgery
https://www.readbyqxmd.com/read/27498334/comparison-of-fusion-rate-and-clinical-results-between-cao-sio2-p2o5-b2o3-bioactive-glass-ceramics-spacer-with-titanium-cages-in-posterior-lumbar-interbody-fusion
#18
Jae Hyup Lee, Chang-Bae Kong, Jae Jun Yang, Hee-Jong Shim, Ki-Hyoung Koo, Jeehyuong Kim, Choon-Ki Lee, Bong-Soon Chang
BACKGROUND CONTEXT: The CaO-SiO2-P2O5-B2O3 glass ceramics spacer generates chemical bonding to adjacent bones with high mechanical stability to produce a union with the endplate and ultimately, stability. PURPOSE: The authors aimed to compare the clinical efficacy and safety of CaO-SiO2-P2O5-B2O3 glass ceramics with a titanium cage that is widely used for PLIF surgery in the clinical field. STUDY DESIGN/SETTING: Prospective, stratified randomized, multi-center, single-blinded, comparator-controlled non-inferiority trial PATIENT SAMPLE: This study was conducted in 4 hospitals and enrolled a total of 86 patients between 30 and 80 years of age who required one-level PLIF due to severe spinal stenosis, spondylolisthesis, or huge disc herniation...
August 3, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27399514/316%C3%A2-magnetic-resonance-imaging-analysis-of-the-combined-aospine-north-america-and-international-studies-part-i-the-prevalence-and-spectrum-of-pathologies-in-a-global-cohort-of-patients-with-degenerative-cervical-myelopathy
#19
Aria Nouri, Allan R Martin, Lindsay Tetreault, Anick Nater, So Kato, Hiroaki Nakashima, Narihito Nagoshi, Hamed Reihani-Kermani, Michael G Fehlings
INTRODUCTION: Degenerative cervical myelopathy (DCM) encompasses a spectrum of age-related conditions that result in progressive spinal cord injury through static and dynamic injury mechanisms. Through detailed review of MRIs from prospective AOSpine multicenter studies, the global prevalence of degenerative cervical pathologies of surgically treated DCM patients is reported. METHODS: MRIs of 458 patients were obtained from North America (n = 197), Europe (n = 92), Latin America (n = 57), and Asia-Pacific (n = 112) and assessed for the type of pathology, source of stenosis, level of maximum cord compression, levels of spinal cord compression (SCC), presence of signal changes on T2-weighted images (T2WI) and T1-weighted images, and the levels of T2WI signal change...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27231813/posterior-lumbar-interbody-fusion-with-cortical-bone-trajectory-screw-fixation-versus-posterior-lumbar-interbody-fusion-using-traditional-pedicle-screw-fixation-for-degenerative-lumbar-spondylolisthesis-a-comparative-study
#20
COMPARATIVE STUDY
Hironobu Sakaura, Toshitada Miwa, Tomoya Yamashita, Yusuke Kuroda, Tetsuo Ohwada
OBJECTIVE Several biomechanical studies have demonstrated the favorable mechanical properties of the cortical bone trajectory (CBT) screw. However, no reports have examined surgical outcomes of posterior lumbar interbody fusion (PLIF) with CBT screw fixation for degenerative spondylolisthesis (DS) compared with those after PLIF using traditional pedicle screw (PS) fixation. The purposes of this study were thus to elucidate surgical outcomes after PLIF with CBT screw fixation for DS and to compare these results with those after PLIF using traditional PS fixation...
November 2016: Journal of Neurosurgery. Spine
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