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https://www.readbyqxmd.com/read/28323709/single-stage-transpedicular-vertebrectomy-and-expandable-cage-placement-for-treatment-of-unstable-mid-and-lower-lumbar-burst-fractures
#1
Jong-Il Choi, Bum-Joon Kim, Sung-Kon Ha, Sang-Dae Kim, Dong-Jun Lim, Se-Hoon Kim
STUDY DESIGN: Retrospective clinical and radiographic study. OBJECTIVE: To examine the efficacy and safety of vertebrectomy and expandable cage placement by a single-stage posterior approach for unstable mid and lower lumbar burst fractures (below the L3). SUMMARY OF BACKGROUND DATA: Patients with unstable mid and lower lumbar burst fractures require surgical treatment to relieve pain, address paralysis, and stabilize the spine to prevent further segmental deformity...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28319468/the-impact-of-cage-dimensions-positioning-and-side-of-approach-in-extreme-lateral-interbody-fusion
#2
Marjan Alimi, Gernot Lang, Rodrigo Navarro-Ramirez, Moritz Perrech, Connor Berlin, Christoph P Hofstetter, Yu Moriguchi, Eric Elowitz, Roger Härtl
STUDY DESIGN: This is a retrospective single-center study. OBJECTIVE: The aim of the study was to evaluate the impact of cage characteristics and position toward clinical and radiographic outcome measures in patients undergoing extreme lateral interbody fusion (ELIF). SUMMARY OF BACKGROUND DATA: ELIF is utilized for indirect decompression and minimally invasive surgical treatment for various degenerative spinal disorders. However, evidence regarding the influence of cage characteristics in patient outcome is minimal...
March 17, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28306640/cervical-alignment-variations-in-different-postures-and-predictors-of-normal-cervical-kyphosis-a-new-understanding
#3
Hwee Weng Dennis Hey, Eugene Tze-Chun Lau, Chengyuan Gordon Wong, Kimberly-Anne Tan, Gabriel Ka-Po Liu, Hee-Kit Wong
STUDY DESIGN: Prospective comparative study OBJECTIVE.: To predict physiological alignment of the cervical spine and study its morphology in different postures. SUMMARY OF BACKGROUND DATA: There is increasing evidence that normal cervical spinal alignment may vary from lordosis to neutral to kyphosis, or form S-shaped or reverse S-shaped curves. METHODS: Standing, erect sitting and natural sitting whole spine radiographs were obtained from 26 consecutive patients without cervical spine pathology...
March 16, 2017: Spine
https://www.readbyqxmd.com/read/28291407/an-assessment-of-the-most-reliable-method-to-estimate-the-sagittal-alignment-of-the-cervical-spine-analysis-of-a-prospective-cohort-of-138-cases
#4
Roland D Donk, Michael G Fehlings, Wim I M Verhagen, Hisse Arnts, Hans Groenewoud, André L M Verbeek, Ronald H M A Bartels
OBJECTIVE Although there is increasing recognition of the importance of cervical spinal sagittal balance, there is a lack of consensus as to the optimal method to accurately assess the cervical sagittal alignment. Cervical alignment is important for surgical decision making. Sagittal balance of the cervical spine is generally assessed using one of two methods; namely, measuring the angle between C-2 and C-7, and drawing a line between C-2 and C-7. Here, the best method to assess sagittal alignment of the cervical spine is investigated...
March 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28260870/age-related-changes-in-muscle-strength-and-spinal-kyphosis-angles-in-an-elderly-japanese-population
#5
Yuji Kasukawa, Naohisa Miyakoshi, Michio Hongo, Yoshinori Ishikawa, Daisuke Kudo, Masazumi Suzuki, Takashi Mizutani, Ryouta Kimura, Yuichi Ono, Yoichi Shimada
Lumbar kyphosis and the decreased mobility of the lumbar spine increase the risk of falls and impair both the quality of life and the ability to perform activities of daily living. However, in the elderly Japanese population, little is known about the age-related changes and sex-related differences in muscle strength, including of the upper and lower extremities and back extensors. An adequate kyphotic or lordotic angle has also not been determined. In this study, we evaluated the age-related changes in muscle strength and spinal kyphosis in 252 males and 320 females ≥50 years of age...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28254673/cervical-lordosis-the-effect-of-age-and-gender
#6
Ella Been, Sara Shefi, Michalle Soudack
BACKGROUND CONTEXT: The cervical lordosis is of great importance to posture and function. Neck pain and disability is often associated with cervical lordosis malalignment. Surgical procedures involving cervical lordosis stabilization or restoration must take into account age and gender differences in cervical lordosis architecture, to avoid further complications. PURPOSE: Therefore, the purpose of this study was to evaluate differences in the cervical lordosis between males and females from childhood to adulthood...
February 27, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28245994/anterior-migration-after-bryan-cervical-disc-arthroplasty-the-relationship-between-hyperlordosis-and-its-impact-on-clinical-outcomes
#7
Tao Lei, Tong Tong, Dechao Miao, Xianda Gao, Jiaxin Xu, Di Zhang, Yong Shen
BACKGROUND: Various modifications have been tested to prevent kyphosis after Bryan cervical disc arthroplasty (CDA). However, the migration of Bryan prostheses has not been systematically studied. This study investigated the cause of anterior migration (AM) and assessed the effect of AM on clinical and radiographic outcomes. METHODS: We retrospectively reviewed 46 consecutive patients who underwent modified Bryan CDA between August 2006 and December 2010. We measured functional spinal unit (FSU), angle of operative disc space (AODS), range of motion (ROM), and sagittal alignment of cervical spine (SACS) preoperatively, postoperatively, and at the final follow-up, and compared these values between the AM and non-AM groups...
February 25, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28240654/lumbar-spine-alignment-in-6-common-postures-a-rom-analysis-with-implications-for-deformity-correction
#8
Hwee Weng Dennis Hey, Eugene Tze-Chun Lau, Kimberly-Anne Tan, Joel Louis Lim, Denise Choong, Leok-Lim Lau, Ka-Po Gabriel Liu, Hee-Kit Wong
STUDY DESIGN: . A prospective cross-sectional study. OBJECTIVE: To compare lumbar spine alignment in 6 common postures, and estimate loss in range of motion (ROM) relative to standing. SUMMARY OF BACKGROUND DATA: Ideal position for fusion of lumbar spine remains unknown. While surgical fusion is necessary for deformity correction and symptom relief, the final position in which the vertebrae are immobilized should provide maximum residual function...
February 24, 2017: Spine
https://www.readbyqxmd.com/read/28219364/the-relationship-between-changes-of-cervical-sagittal-alignment-after-anterior-cervical-discectomy-and-fusion-and-spino-pelvic-sagittal-alignment-under-roussouly-classification-a-four-year-follow-up-study
#9
Dong-Ning Huang, Miao Yu, Nan-Fang Xu, Mai Li, Shao-Bo Wang, Yu Sun, Liang Jiang, Feng Wei, Xiao-Guang Liu, Zhong-Jun Liu
BACKGROUND: Anterior cervical discectomy and fusion (ACDF) is widely used in the treatment of cervical degenerative disease; however, the variation of cervical sagittal alignment changes after ACDF has been rarely explored. The purpose of this study is to determine the relationship between changes of cervical sagittal alignment after ACDF and spino-pelvic sagittal alignment under Roussouly classification. METHODS: A cohort of 133 Chinese cervical spondylotic patients who received ACDF from 2011 to 2012 was recruited...
February 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28171773/cervical-traction-therapy-with-and-without-neck-support-a-finite-element-analysis
#10
Kuan Wang, Huihao Wang, Zhen Deng, Zhengyan Li, Hongsheng Zhan, Wenxin Niu
BACKGROUND: Cervical traction is commonly used for treating neck pain. However, few studies have investigated the biomechanical impact such traction has on soft tissues. OBJECTIVES: To analyze the biomechanics of cervical traction therapy in a supine position with and without neck support (NS and non-NS). METHODS: A finite element model of the cervical spine was constructed to investigate the mechanism behind cervical traction therapy. An axial traction force of 100-N was loaded on the upper surface of C0 to simulate traction weight...
April 2017: Musculoskelet Sci Pract
https://www.readbyqxmd.com/read/28128704/cervical-lordotic-alignment-following-posterior-spinal-fusion-for-adolescent-idiopathic-scoliosis-reciprocal-changes-and-risk-factors-for-malalignment
#11
Kazunori Hayashi, Hiromitsu Toyoda, Hidetomi Terai, Akinobu Suzuki, Masatoshi Hoshino, Koji Tamai, Shoichiro Ohyama, Hiroaki Nakamura
OBJECTIVE Numerous reports have been published on the effectiveness and safety of correction of the coronal Cobb angle and thoracolumbar sagittal alignment in patients with adolescent idiopathic scoliosis (AIS). Suboptimal sagittal alignment, such as decreased thoracic kyphosis (TK), after corrective surgery, is a possible cause of lumbar or cervical spinal degeneration and junctional malalignment; however, few reports are available on reciprocal changes outside of the fused segments, such as the cervical lordotic angle (CLA)...
January 27, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28116458/correlation-analysis-of-osteoporotic-vertebral-compression-fractures-and-spinal-sagittal-imbalance
#12
Yi-Long Zhang, Li-Tao Shi, Pei-Fu Tang, Zhi-Jie Sun, Ya-Hui Wang
PURPOSE: To evaluate the correlation between osteoporotic vertebral compression fractures and spinal sagittal imbalance, in order to provide a reference for clinical treatment. METHODS: From September 2013 to March 2015, 60 elderly patients with old osteoporotic vertebral compression factures (observation group) and 60 healthy elderly people (control group) were studied. Whole-spine anteroposterior and lateral view X‑ray photographs were taken from all participants, the number and location of fractured vertebrae were recorded, and sagittal parameters in both groups were compared...
January 23, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28107314/effect-of-treatment-with-twin-block-appliances-on-body-posture-in-class-ii-malocclusion-subjects-a-prospective-clinical-study
#13
Dalia Smailienė, Aistė Intienė, Irma Dobradziejutė, Gintaras Kušleika
BACKGROUND There is strong evidence that malocclusion and body posture are interdependent. The relationship between improvement of nasopharyngeal airway, correction of malocclusion by orthodontic treatment or orthognathic surgery, and changes in body posture were evaluated in several studies. The purpose of the present study was to analyze the effect of the orthodontic treatment with Twin-block appliance on body posture. MATERIAL AND METHODS The study group consisted of 23 children (mean age 12.45 (1.06) years)...
January 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28073140/-clinical-and-radiological-results-after-anterior-cervical-corpectomy-with-cage-fusion-a-retrospective-comparison-of-peek-vs-titanium-cages
#14
Chris Schulz, Uwe Max Mauer, René Mathieu
Background Anterior cervical corpectomy and fusion (ACCF) has become a standard procedure for patients with spondylotic myelopathy due to multisegmental stenosis of the cervical canal. Beside the fusion technique using autogenous bone grafts, synthetic cages have been increasingly used in recent years. Published information on the clinical and radiological results of different cage materials for ACCF is still limited. The study presented here is the largest series to date reporting clinical and radiological outcomes and complication rates after one- to three-level ACCF using structural polyetheretherketone (PEEK) or titanium cages augmented by anterior plate-screw osteosynthesis...
January 10, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28065711/a-comparison-of-the-effects-of-male-pheromone-priming-and-optogenetic-inhibition-of-accessory-olfactory-bulb-forebrain-inputs-on-the-sexual-behavior-of-estrous-female-mice
#15
Elizabeth A McCarthy, Tenzin Kunkhyen, Wayne J Korzan, Ajay Naik, Arman Maqsudlu, James A Cherry, Michael J Baum
Previous research has shown that repeated testing with a stimulus male is required for ovariectomized, hormone-primed female mice to become sexually receptive (show maximal lordosis quotients; LQs) and that drug-induced, epigenetic enhancement of estradiol receptor function accelerated the improvement in LQs otherwise shown by estrous females with repeated testing. We asked whether pre-exposure to male pheromones ('pheromone priming') would also accelerate the improvement in LQs with repeated tests and whether optogenetic inhibition of accessory olfactory bulb (AOB) projection neurons could inhibit lordosis in sexually experienced estrous female mice...
March 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28043852/surgical-techniques-for-lumbo-sacral-fusion
#16
REVIEW
P Tropiano, H Giorgi, A Faure, B Blondel
Lumbo-sacral (L5-S1) fusion is a widely performed procedure that has become the reference standard treatment for refractory low back pain. L5-S1 is a complex transition zone between the mobile lordotic distal lumbar spine and the fixed sacral region. The goal is to immobilise the lumbo-sacral junction in order to relieve pain originating from this site. Apart from achieving inter-vertebral fusion, the main challenge lies in the preoperative determination of the fixed L5-S1 position that will be optimal for the patient...
December 30, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27994787/long-term-outcomes-of-posterior-lumbar-interbody-fusion-using-stand-alone-ray-threaded-cage-for-degenerative-disk-disease-a-20-year-follow-up
#17
Saleh S Baeesa, Belen G Medrano, David C Noriega
STUDY DESIGN: Retrospective study. PURPOSE: To analyze outcomes of posterior lumbar interbody fusion (PLIF) stand-alone cages. OVERVIEW OF LITERATURE: PLIF for degenerative disk disease using stand-alone cages has lost its popularity owing to implant-related complications and pseudoarthrosis. METHODS: We analyzed the records of 45 patients (18 women, 27 men), operated between January 1994 and December 1996, with a mean follow-up of 18 years 3 months (20 years 3 months-22 years 3 months)...
December 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27988036/a-female-head-neck-model-for-rear-impact-simulations
#18
Jonas Östh, Manuel Mendoza-Vazquez, Fusako Sato, Mats Y Svensson, Astrid Linder, Karin Brolin
Several mathematical cervical models of the 50th percentile male have been developed and used for impact biomechanics research. However, for the 50th percentile female no similar modelling efforts have been made, despite females being subject to a higher risk of soft tissue neck injuries. This is a limitation for the development of automotive protective systems addressing Whiplash Associated Disorders (WADs), most commonly caused in rear impacts, as the risk for females sustaining WAD symptoms is double that of males...
January 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/27921118/can-different-occlusal-positions-instantaneously-impact-spine-and-body-posture-a-pilot-study-using-rasterstereography-for-a-three-dimensional-evaluation
#19
Karoline März, Werner Adler, Ragai-Edward Matta, Linda Wolf, Manfred Wichmann, Bastian Bergauer
PURPOSE: Orthodontists influence dental occlusion directly. To suggest any link between dental occlusion and body posture is highly contentious, as evidenced by the literature. Rasterstereography, an optical technique that enables three-dimensional (3D) body measurements to be collected, has not yet been used to impartially examine whether different occlusal positions could instantaneously alter spine and body posture. We therefore set out to use this technique to nonsubjectively evaluate this question under static conditions...
December 5, 2016: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/27889355/cervical-sagittal-alignment-in-adult-hyperkyphosis-treated-by-posterior-instrumentation-and-in-situ-bending
#20
F Paternostre, Y P Charles, E A Sauleau, J-P Steib
BACKGROUND: In the normal adult spine, a link between thoracolumbar and cervical sagittal alignment exists, suggesting adaptive cervical positional changes allowing horizontal gaze. In patients with thoracic hyperkyphosis, cervical adaptation to sagittal global alignment might be different from healthy individuals. However, this relationship has not clearly been reported in hyperkyphotic deformity. PURPOSE: The purpose of this study was to identify cervical sagittal alignment types observed on radiographs in young adults with thoracic hyperkyphosis...
November 23, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
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