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https://www.readbyqxmd.com/read/29049245/sacral-root-injury-during-trans-sacral-epiduroscopic-laser-decompression-a-case-report
#1
Min Cheol Chang
RATIONALE: Trans-sacral epiduroscopic laser decompression (SELD) is reported to have strong positive short-term effects in controlling lower back pain (LBP) or radicular leg pain following herniated lumbar disc (HLD). However, little is known about the possible complications following SELD. PATIENT CONCERNS: A 36-year-old man received SELD with YAG laser for controlling LBP and radicular pain due to HLD on L5-S1. However, after SELD, voiding and defecation difficulties and sensory deficits on the S3-5 dermatome were presented...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29037442/estimation-of-in-vivo-inter-vertebral-loading-during-motion-using-fluoroscopic-and-magnetic-resonance-image-informed-finite-element-models
#2
Sahand Zanjani-Pour, Judith R Meakin, Alex Breen, Alan Breen
Finite element (FE) models driven by medical image data can be used to estimate subject-specific spinal biomechanics. This study aimed to combine magnetic resonance (MR) imaging and quantitative fluoroscopy (QF) in subject-specific FE models of upright standing, flexion and extension. Supine MR images of the lumbar spine were acquired from healthy participants using a 0.5 T MR scanner. Nine 3D quasi-static linear FE models of L3 to L5 were created with an elastic nucleus and orthotropic annulus. QF data was acquired from the same participants who performed trunk flexion to 60° and trunk extension to 20°...
October 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29036858/musculoskeletal-signs-in-female-homecare-personnel-a-longitudinal-epidemiological-study
#3
Gunnar Lundberg, Björn Gerdle
BACKGROUND: In Sweden, homecare services take care of elderly and disabled people, work that often requires heavy lifting and forward bending, resulting in high prevalences of pain and work accidents. OBJECTIVE: Using an eight-year follow-up, this study determines the prognostic importance of certain musculoskeletal signs reported in earlier studies [1, 2] with respect to aspects of pain and perceived disability. METHODS: Baseline data has been reported in earlier studies of 607 women [1-3]...
October 8, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/29032220/electodiagnostic-and-advanced-neuro-imaging-characterization-for-successful-treatment-of-a-spinal-extradural-arachnoid-cyst
#4
Tomoko Tanaka, Raja S Boddepalli, Douglas C Miller, Zongxian Cao, Vivek Sindhwani, Joan R Coates, Raghav Govindarajan, N Scott Litofsky
BACKGROUND: Spinal extradural arachnoid cysts (SEAC) are relatively uncommon. However, several large cysts have presented with spinal cord compression requiring surgical intervention. CASE DESCRIPTION: We report a patient with progressively enlarging SEAC causing worsening right S1 radiculopathy and gastrocnemius muscle atrophy. Electromyography (EMG) and nerve conduction studies (NCS) revealed an S1 motor radiculopathy. Serial magnetic resonance imaging (MRI) findings confirmed enlargement of the small cyst originating from the sacral thecal sac on the right while two smaller cyst on the left remained stable...
October 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29027007/lumbosacral-stress-and-age-may-contribute-to-increased-pelvic-incidence-an-analysis-of-1625-adults
#5
Hongda Bao, Barthelemy Liabaud, Jeffrey Varghese, Renaud Lafage, Bassel G Diebo, Cyrus Jalai, Subaraman Ramchandran, Gregory Poorman, Thomas Errico, Feng Zhu, Themistocles Protopsaltis, Peter Passias, Aaron Buckland, Frank Schwab, Virginie Lafage
PURPOSE: While there is a consensus that pelvic incidence (PI) remains constant after skeletal maturity, recent reports argue that PI increases after 60 years. This study aims to investigate whether PI increases with age and to determine potential associated factors. METHODS: 1510 patients with various spinal degenerative and deformity pathologies were enrolled, along with an additional 115 asymptomatic volunteers. Subjects were divided into six age subgroups with 10-year intervals...
October 12, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29026672/intraoperative-navigation-guided-resection-of-anomalous-transverse-processes-in-patients-with-bertolotti-s-syndrome
#6
Harish Babu, Carlito Lagman, Terrence T Kim, Marshall Grode, J Patrick Johnson, Doniel Drazin
BACKGROUND: Bertolotti's syndrome is characterized by enlargement of the transverse process at the most caudal lumbar vertebra with a pseudoarticulation between the transverse process and sacral ala. Here, we describe the use of intraoperative three-dimensional image-guided navigation in the resection of anomalous transverse processes in two patients with Bertolotti's syndrome. CASE DESCRIPTIONS: Two patients diagnosed with Bertolotti's syndrome who had undergone the above-mentioned procedure were identified...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29026667/lumbar-chronic-subdural-hematoma-mimicking-an-intradural-extramedullary-tumor-a-case-report
#7
Hyeun Sung Kim, Nitin Adsul, Yoon Seok Ju, Ki Joon Kim, Sung Ho Choi, Jeong Hoon Kim, Sung Kyun Chung, Jeong-Hoon Choi, Jee-Soo Jang, Il-Tae Jang, Seong-Hoon Oh, Jae Eun Park, Sol Lee
BACKGROUND: Chronic spinal subdural hematomas are extremely rare with only 28 cases reported in the literature. Nevertheless, they should be considered among the differential diagnoses for spinal intradural/extramedullary lesions. CASE REPORT: A 65-year-old male presented with progressive back pain and right S1 radiculopathy. Magnetic resonance imaging scan revealed a right-sided posterolateral intradural/extramedullary lesion at the L5-S1 level. It was hyperintense on T1 and hypointense on T2-weighted images; on the short TI inversion recovery sequence it was hyperintense...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28989849/can-posterior-lumbar-instrumentation-and-fusion-be-overpowered-by-anterior-lumbar-fusion-with-hyperlordotic-cages-a-cadaveric-study
#8
Nathan Wigner, Abhijeet Kadam, Philip Saville, Vincent Arlet
STUDY DESIGN: Technical report on cadavers. OBJECTIVE: To evaluate preliminary feasibility and safety of lumbar sagittal alignment correction with anterior hyperlordotic cages used to overpower previous posterior spinal instrumentation. METHODS: Hyperlordotic 30° anterior lumbar interbody fusion (ALIF) cages were inserted in collapsed L5-S1 disc space of 2 cadavers to overpower prior posterior L5-S1 pedicle screws and rod constructs. A distinct technique of opening up the disc space and creation of intersegmental lordosis was employed using a large endplate distractor and transforaminal lumbar interbody fusion (TLIF) paddle distractor...
October 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28989841/should-we-label-all-synovial-cysts-as-unstable
#9
Arvind G Kulkarni, Shumayou Dutta, Abhilash Dhruv, Anupreet Bassi
STUDY DESIGN: Retrospective study. OBJECTIVE: To analyze the various anatomical parameters that influence segmental stability in patients suffering from lumbar intra spinal cysts (LISCs) and to determine the outcome of microscopic unilateral laminotomy and cystectomy. METHODS: All patients that were surgically managed for a LISC between 2007 and 2013 with more than 3 years of follow-up were reviewed. Those without associated instability were evaluated for segmental mobility, segmental angulation, facet inclination, stage of disc degeneration, and level of involvement on MRI and dynamic radiographs...
October 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28983962/etiology-of-developmental-spinal-stenosis-a-genome-wide-association-study
#10
Jason Pui Yin Cheung, Patrick Yp Kao, Pak Sham, Kathryn Se Cheah, Danny Chan, Kenneth Mc Cheung, Dino Samartzis
Our study aimed to identify possible single nucleotide polymorphisms (SNPs) via a genome-wide association study (GWAS) approach and a candidate gene platform that were associated with lumbar developmental spinal stenosis (DSS). Southern Chinese population-based study volunteers were assessed (age range: 18-55 years). DSS was defined as the anteroposterior bony spinal canal diameter on T1-weighted axial MRI of L1 to S1. Genotyping was performed using the Illumina HumanOmniZhongHua-8 BeadChip. Using the canal diameter as the quantitative trait, genomic statistical analyses was performed...
October 6, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28976592/in-vivo-correlates-between-daily-physical-activity-and-intervertebral-disc-health
#11
Jennifer A Bowden, Anton E Bowden, Haonan Wang, Ron L Hager, James D LeCheminant, Ulrike H Mitchell
Physical activity impacts health and disease in multiple body tissues including the intervertebral discs. Fluid flow within the disc is an indicator of disc health that can be observed using diffusion weighted magnetic resonance imaging. We monitored activity levels of 26 participants, age 35-55yrs, using Actigraph accelerometers for four days to evaluate vigorous-intensity activity, moderate to vigorous intensity activity, and sedentary time. Participants underwent structural and diffusion weighted magnetic resonance imaging to evaluate intervertebral disc health and fluid flow...
October 4, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28962911/from-the-international-space-station-to-the-clinic-how-prolonged-unloading-may-disrupt-lumbar-spine-stability
#12
Jeannie F Bailey, Stephanie L Miller, Kristine Khieu, Conor W O'Neill, Robert M Healey, Dezba G Coughlin, Jojo V Sayson, Douglas G Chang, Alan R Hargens, Jeffrey C Lotz
Background context Prolonged microgravity exposure is associated with localized low back pain and an elevated risk of post-flight disc herniation. Though the mechanisms by which microgravity impairs the spine are unclear, they should be foundational for developing in-flight countermeasures for maintaining astronaut spine health. Because human spine anatomy has adapted to upright posture on Earth, observations of how spaceflight affects the spine should also provide new and potentially important information on spine biomechanics that benefit the general population...
September 26, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28962127/multimodal-quantitative-magnetic-resonance-imaging-for-lumbar-intervertebral-disc-degeneration
#13
Wei Wang, Jin Hou, Deyong Lv, Wen Liang, Xinqing Jiang, Hongbin Han, Xianyue Quan
The present study investigated the application of the T1ρ and T2 relaxation mapping magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) in the evaluation of intervertebral disc degeneration (IDD). A total of 93 asymptomatic subjects were imaged with T1ρ and T2 mapping, as well as DWI. Pfirrmann grading was performed and correlation analysis was conducted for T1ρ, T2 and DWI results with the grading results and age. Pfirrmann grading indicated 69 cases of grade I, 240 cases of grade II, 101 cases of grade III, 43 cases of grade IV and 12 cases of grade V...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28953648/intramuscular-hematoma-with-motor-weakness-after-trigger-point-injection-a-case-report
#14
Sang Gyun Kim, Kwang Seok Shim, Dong Won Lee, Eun Ju Kim, Sang-Gon Lee, Ji-Hyang Lee, Ji Hyun An
RATIONALE: Although trigger point injection is known as an easy and low-risk procedure, it is contraindicated to patients with hemorrhagic disorders or who regularly take anticoagulants/antiplatelets. However, taking clopidogrel is not a defined contraindication to this low-risk procedure. PATIENT CONCERNS: The chief complaint of a 76-year old woman regularly taking clopidogrel was low back and left buttock pain which prolonged for several years. DIAGNOSES: The patient was diagnosed with L4-5 and L5-S1 spinal stenosis at the orthopedics department and was referred for lumbar spinal epidural steroid injection...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28947161/spinal-loads-and-trunk-muscles-forces-during-level-walking-a-combined-in-vivo-and-in-silico-study-on-six-subjects
#15
Rizwan Arshad, Lorenza Angelini, Thomas Zander, Francesca Di Puccio, Marwan El-Rich, Hendrik Schmidt
During level walking, lumbar spine is subjected to cyclic movements and intricate loading of the spinal discs and trunk musculature. This study aimed to estimate the spinal loads (T12-S1) and trunk muscles forces during a complete gait cycle. Six men, 24-33years walk barefoot at self-selected speed (4-5km/h). 3D kinematics and ground reaction forces were recorded using a motion capturing system and two force plates, implemented in an inverse dynamic musculoskeletal model to predict the spinal loads and trunk muscles forces...
August 26, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28946526/health-related-quality-of-life-hrqol-following-transforaminal-percutaneous-endoscopic-discectomy-tped-for-lumbar-disc-herniation-a-prospective-cohort-study-early-results
#16
S Kapetanakis, E Giovannopoulou, G Charitoudis, K Kazakos
BACKGROUND: Lumbar discectomy is among the most frequently performed procedures in spinal surgery. Transforaminal percutaneous endoscopic discectomy (TPED) is a minimally invasive technique that gains ground among surgeons in the recent years. TPED has been studied in terms of effectiveness, however little is known about its overall impact on health-related quality of life (HRQoL) of the patients. OBJECTIVE: To investigate the progress of HRQoL following TPED. PATIENTS AND METHODS: Seventy-six (76) patients were enrolled in the study...
June 10, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28942026/posterolateral-fusion-versus-dynesys-%C3%A2-dynamic-stabilization-retrospective-study-at-a-minimum-5-5-years-follow-up
#17
Simon Bredin, Olivier Demay, Christophe Mensa, Karim Madi, Xavier Ohl
INTRODUCTION: Lumbar fusion is one of the most widespread techniques to treat degenerative lumbar pathology. To prevent complications such as non-union or adjacent segment degeneration, dynamic stabilization techniques were developed, but with controversial results. The aim of the present study was to compare long-term radiologic and clinical results between fusion and dynamic stabilization. MATERIAL AND METHODS: A single-center retrospective study included patients with recurrent lumbar discal hernia or lumbar canal stenosis managed by posterolateral fusion or by dynamic stabilization associated to neurologic release...
September 20, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28941955/effect-of-arm-swinging-on-lumbar-spine-and-hip-joint-forces
#18
Lorenza Angelini, Philipp Damm, Thomas Zander, Rizwan Arshad, Francesca Di Puccio, Hendrik Schmidt
During level walking, arm swing plays a key role in improving dynamic stability. In vivo investigations with a telemeterized vertebral body replacement showed that spinal loads can be affected by differences in arm positions during sitting and standing. However, little is known about how arm swing could influence the lumbar spine and hip joint forces and motions during walking. The present study aims to provide better understanding of the contribution of the upper limbs to human gait, investigating ranges of motion and joint reaction forces...
September 14, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28939045/differences-in-kinematic-variables-in-single-leg-stance-between-patients-with-stroke-and-healthy-elderly-people-measured-with-inertial-sensors-a-cross-sectional-study
#19
David Perez-Cruzado, Manuel Gonzalez-Sanchez, Antonio Ignacio Cuesta-Vargas
OBJECTIVE: The study aimed to analyze the differences between kinematic parameters in the single-leg stance (SLS) in patients with stroke and in healthy elderly people measured with 2 inertial sensors-1 in the trunk and 1 in the lumbar region. METHODS: Two groups of participants were measured: the first group consisted of 5 healthy elderly people over 65 years of age; the second group consisted of 5 patients with stroke over 65 years of age, recovering for more than 6 months after suffering a stroke, and who had been undergoing rehabilitation treatment for at least 6 months...
September 19, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28933804/concurrent-lumbosacral-and-sacrococcygeal-fusion-a-rare-etiology-of-low-back-pain-and-coccygodynia
#20
Stylianos Kapetanakis, Grigorios Gkasdaris, Pavlos Pavlidis, Panagiotis Givissis
BACKGROUND: Sacrum is a triangular bone placed in the base of the spine and formed by the synostosis of five sacral vertebrae (S1-S5). Its upper part is connected with the inferior surface of the body of L5 vertebra forming the lumbosacral joint, while its lower part is connected with the base of the coccyx forming the sacrococcygeal symphysis, an amphiarthrodial joint. The existence of four pairs of sacral foramen in both anterior and posterior surface of the sacrum is the most common anatomy...
September 21, 2017: Folia Morphologica (Warsz)
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