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Computed tomography, Scoliosis,

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https://www.readbyqxmd.com/read/28428530/-duchenne-muscle-dystrophy-caused-bronchial-obstruction
#1
Aki Fujiwara, Nozomu Iwashiro, Masanori Ohara
Duchenne muscle dystrophy (DMD), X-linked recessive genetic disorder, causes a variety of complications including scoliosis. We report a case of bronchial obstruction and hemorrhage caused by scoliosis with DMD. A man in his forties having been hospitalized due to DMD since the age of 6, produced bloody sputum. A chest X-ray showed atelectasis in his right lower lung. A computed tomography and bronchoscopy indicated that scoliosis and thoracic deformity due to muscle dystrophy caused compression of a right main bronchus by the vertebra, leading to bronchial obstruction and bleeding...
April 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28391383/percutaneous-radiofrequency-ablation-for-spinal-osteoid-osteoma-and-osteoblastoma
#2
Ben Wang, Song Bo Han, Liang Jiang, Hui Shu Yuan, Chen Liu, Bin Zhu, Zhong Jun Liu, Xiao Guang Liu
PURPOSES: We sought to verify the efficacy and safety of RFA in spinal OO and osteoblastomas (OB) (Enneking Stage 2, S2). METHODS: We retrospectively reviewed patients treated in our hospital. Surgical resection was indicated for Enneking Stage 3 OB. RFA indications for spinal OO and OB (S2) were no neurological deficits, complete bone cortex around the lesion on computed tomography (CT), and cerebrospinal fluid between a lesion and the spinal cord/nerve root on magnetic resonance imaging...
April 8, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28362188/spinal-column-shortening-for-tethered-cord-syndrome-associated-with-myelomeningocele-lumbosacral-lipoma-and-lipomyelomeningocele-in-children-and-young-adults
#3
Guillermo Aldave, Daniel Hansen, Steven W Hwang, Amee Moreno, Valentina Briceño, Andrew Jea
OBJECTIVE Tethered cord syndrome is the clinical manifestation of an abnormal stretch on the spinal cord, presumably causing mechanical injury, a compromised blood supply, and altered spinal cord metabolism. Tethered cord release is the standard treatment for tethered cord syndrome. However, direct untethering of the spinal cord carries potential risks, such as new neurological deficits from spinal cord injury, a CSF leak from opening the dura, and retethering of the spinal cord from normal scar formation after surgery...
March 31, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28349022/evaluating-accuracy-of-free-hand-pedicle-screw-insertion-in-adolescent-idiopathic-scoliosis-using-postoperative-multi-slice-computed-tomography-scan
#4
Mohammadreza Etemadifar, Mohammadhossein Jamalaldini
BACKGROUND: Pedicle screw instrumentation has many advantages for correction of adolescent idiopathic scoliosis (AIS) deformity including better correction and fewer late complications. On the other hand, screw insertion in AIS is challenging. Intraoperative fluoroscopy or navigation techniques are expensive, time-consuming, and exposed to high radiation. Free-hand technique relies on the surgeon's experience and locating the pedicle entry point with anatomical landmarks. There are few studies that evaluated pedicle screw position accuracy with postoperative multi-slice computed tomography scan...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28329150/scoliosis-after-pectus-excavatum-correction-does-it-improve-or-worsen-%C3%A2
#5
Jae Ho Chung, Hyung Joo Park, Kwang Taik Kim
OBJECTIVES: Scoliosis is associated with pectus excavatum. However, the change in the degree of scoliosis after pectus excavatum correction has not been clarified. This study examined how the correction of pectus excavatum influences the status of pre-existing scoliosis. METHODS: A total of 779 pectus excavatum patients operated between 2007 and 2011 using the pectus bar were retrospectively analysed. Preoperative severity and postoperative change of scoliosis in accordance with the severity of pectus excavatum were evaluated...
March 7, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28266959/morphometric-analysis-of-the-retroperitoneal-vessels-with-respect-to-lateral-access-surgery-in-adult-scoliosis
#6
Heeren S Makanji, Hai Le, Kirkham B Wood, Louis G Jenis, Thomas D Cha
STUDY DESIGN: Cross-sectional study reviewing 62 magnetic resonance imaging or computed tomography scans from consecutive adult patients with scoliotic spinal deformity in the thoracolumbar spine. OBJECTIVE: To investigate the variation in anatomic position of retroperitoneal vessels in relationship to curve direction, location, magnitude, and axial rotation of curves in adult scoliosis. SUMMARY OF BACKGROUND DATA: The minimally invasive lateral approach to the thoracolumbar spine avoids manipulation of abdominal and retroperitoneal structures and decreases risk of injury to paraspinal musculature...
March 6, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28259272/current-evidence-regarding-diagnostic-imaging-methods-for-pediatric-lumbar-spondylolysis-a-report-from-the-scoliosis-research-society-evidence-based-medicine-committee
#7
Charles G T Ledonio, Douglas C Burton, Charles H Crawford, Robert Shay Bess, Jacob M Buchowski, Serena S Hu, Baron S H Lonner, David W Polly, Justin S Smith, James O Sanders
BACKGROUND: Spondylolysis is common among the pediatric population, yet no formal systematic literature review regarding diagnostic imaging has been performed. The Scoliosis Research Society (SRS) requested an assessment of the current state of peer reviewed evidence regarding pediatric spondylolysis. METHODS: Literature was searched professionally and citations retrieved. Abstracts were reviewed and analyzed by the SRS Evidence-Based Medicine Committee. Level I studies were considered to provide Good Evidence for the clinical question...
March 2017: Spine Deformity
https://www.readbyqxmd.com/read/28207619/iliac-crest-regeneration-a-retrospective-study-of-14-years-of-follow-up
#8
Anastasios Christodoulou, Achilleas Boutsiadis, Evangellos Christodoulou, Petros Antonarakos, Panagiotis Givissis, Ippokratis Hatzokos
STUDY DESIGN: This is a retrospective study analysis. OBJECTIVE: The purpose of our study was to evaluate the healing process of the ilium after being used as a bone graft donor site in the treatment of adolescent idiopathic scoliosis. SUMMARY OF BACKGROUND DATA: Iliac crest bone grafts have been proven to be the most reliable means for solid fusion in spine surgery. Nevertheless, few reports in the literature describe the ability of the iliac crest to regenerate...
March 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28183004/an-integrative-framework-for-3d-cobb-angle-measurement-on-ct-images
#9
Xing Huo, Jie Qing Tan, Jun Qian, Li Cheng, Jue Hua Jing, Kun Shao, Bing Nan Li
OBJECTIVE: Measuring the Cobb angle on computed tomography (CT) images remains a challenging but requisite task for clinical diagnoses of scoliosis. Traditionally, clinical practitioners resort to manual demarcation, but this approach is inefficient and subjective. Most of the existing computerized algorithms are two-dimensional (2D) and incapable of multi-angle calibration. METHODS: A novel integrative framework based on curvature features and geometric constraints is proposed to measure three-dimensional (3D)Cobb angles on CT images...
March 1, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28120055/restoration-of-thoracolumbar-spine-stability-and-alignment-in-elderly-patients-using-minimally-invasive-spine-surgery-miss-a-safe-and-feasible-option-in-degenerative-and-traumatic-spine-diseases
#10
Giuseppe M V Barbagallo, Giuseppe Raudino, Massimiliano Visocchi, A Abdulrazzaq Alobaid, A Abdulaziz Al-Mutair, Thomas Naveen, Francesco Certo
Minimally invasive spine surgery (MISS), including percutaneous pedicle-screw fixation (PPSF), mini-open transforaminal lumbar interbody fusion (m-open TLIF), vertebroplasty, and stentoplasty, allows the preservation of neurological function and the restoration of spine stability, while reducing associated risks and complications. This study aimed to analyze the safety and efficacy of MISS in elderly patients suffering from degenerative or traumatic thoracolumbar diseases. Forty-five patients (28 females), with a mean age of 73 years (range 65-89), suffering from osteoporotic vertebral fractures (24), degenerative spondylolisthesis (15), and lumbar canal stenosis with instability and/or de novo scoliosis (6) were included...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28107246/reliability-and-usefulness-of-intraoperative-3-dimensional-imaging-by-mobile-c-arm-with-flat-panel-detector
#11
Takahito Fujimori, Motoki Iwasaki, Yukitaka Nagamoto, Masafumi Kashii, Masaki Takao, Tsuyoshi Sugiura, Hideki Yoshikawa
STUDY DESIGN: Reliability and agreement study. OBJECTIVE: To assess the reliability of intraoperative 3-dimensional imaging with a mobile C-arm (3D C-arm) equipped with a flat-panel detector. SUMMARY OF BACKGROUND DATA: Pedicle screws are widely used in spinal surgery. Postoperative computed tomography (CT) is the most reliable method to detect screw misplacement. Recent advances in imaging devices have enabled surgeons to acquire 3D images of the spine during surgery...
February 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28054655/unique-local-bone-tissue-characteristics-in-iliac-crest-bone-biopsy-from-adolescent-idiopathic-scoliosis-with-severe-spinal-deformity
#12
Zhiwei Wang, Huanxiong Chen, Y Eric Yu, Jiajun Zhang, Ka-Yee Cheuk, Bobby K W Ng, Yong Qiu, X Edward Guo, Jack C Y Cheng, Wayne Y W Lee
Adolescent idiopathic scoliosis is a complex disease with unclear etiopathogenesis. Systemic and persistent low bone mineral density is an independent prognostic factor for curve progression. The fundamental question of how bone quality is affected in AIS remains controversy because there is lack of site-matched control for detailed analysis on bone-related parameters. In this case-control study, trabecular bone biopsies from iliac crest were collected intra-operatively from 28 severe AIS patients and 10 matched controls with similar skeletal and sexual maturity, anthropometry and femoral neck BMD Z-score to control confounding effects...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/27991528/prognostic-value-of-bone-mineral-density-on-curve-progression-a-longitudinal-cohort-study-of-513-girls-with-adolescent-idiopathic-scoliosis
#13
Benjamin Hon Kei Yip, Fiona Wai Ping Yu, Zhiwei Wang, Vivian Wing Yin Hung, Tsz Ping Lam, Bobby Kin Wah Ng, Feng Zhu, Jack Chun Yiu Cheng
Osteopenia has been found to occur in about 30% of Adolescent Idiopathic Scoliosis (AIS) patients. This study aimed to investigate its prognostic value on the risk of curve progression to surgical threshold. Newly diagnosed AIS girls (N = 513) with Cobb angle 10°-40° were recruited with follow-up till maturity. Bilateral hips were assessed with dual-energy x-ray absorptiometry (DXA). Distal radius of a subgroup of 90 subjects was further assessed with high-resolution peripheral quantitative computed tomography (HR-pQCT)...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27927501/morphometric-analysis-of-the-thoracic-intervertebral-foramen-osseous-anatomy-in-adolescent-idiopathic-scoliosis-using-low-dose-computed-tomography
#14
Thorbjorn J Loch-Wilkinson, Maree T Izatt, Robert D Labrom, Geoffrey N Askin, Mark J Pearcy, Clayton J Adam
PURPOSE: The dimensions of the thoracic intervertebral foramen in adolescent idiopathic scoliosis (AIS) have not previously been quantified. Better understanding of the dimensions of the foramen may be useful in surgical planning. This study describes a reproducible method for measurement of the thoracic foramen in AIS using computed tomography (CT). METHODS: In 23 preoperative female patients with Lenke 1 type AIS with right-side convexity major curves confined to the thoracic spine the foraminal height (FH), foraminal width (FW), pedicle to superior articular process distance (P-SAP), and cross-sectional foraminal area (FA) were measured using multiplanar reconstructed CT...
May 2016: Spine Deformity
https://www.readbyqxmd.com/read/27921155/comparison-of-two-and-three-dimensional-measurement-of-the-cobb-angle-in-scoliosis
#15
Ricarda Lechner, David Putzer, Dietmar Dammerer, Michael Liebensteiner, Christian Bach, Martin Thaler
PURPOSE: The Cobb angle as an objective measure is used to determine the progression of deformity, and is the basis in the planning of conservative and surgical treatment. However, studies have shown that the Cobb angle has two limitations: an inter- and intraobserver variability of the measurement is approximately 3-5 degrees, and high variability regarding the definition of the end vertebra. Scoliosis is a three-dimensional (3D) pathology, and 3D pathologies cannot be completely assessed by two-dimensional (2D) methods, like 2D radiography...
December 5, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27893671/scoliosis-secondary-to-lumbar-osteoid-osteoma-a-case-report-of-delayed-diagnosis-and-literature-review
#16
REVIEW
Haiping Zhang, Xingbang Niu, Biao Wang, Simin He, Dingjun Hao
RATIONALE: Lumbar osteoid osteoma has a low incidence, which could easily lead to scoliosis. PATIENT CONCERNS: Scoliosis secondary to lumbar osteoid osteoma could be easily misdiagnosed when patients do not complain of obvious symptoms. DIAGNOSES: We reported a case of a 9-year-old boy with back deformity that was firstly diagnosed with scoliosis at the local hospital. After prescribed with orthosis, the patient experienced aggravating pain that could not be relieved with painkillers...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27885641/apophyseal-ossification-of-the-iliac-crest-in-forensic-age-estimation-computed-tomography-standards-for-modern-australian-subadults
#17
Nicolene Lottering, Clair L Alston-Knox, Donna M MacGregor, Maree T Izatt, Caroline A Grant, Clayton J Adam, Laura S Gregory
This study contrasts the ontogeny of the iliac crest apophysis using conventional radiography and multislice computed tomography (MSCT), providing probabilistic information for age estimation of modern Australian subadults. Retrospective abdominopelvic MSCT data acquired from 524 Australian individuals aged 7-25 and surveillance radiographs of adolescent idiopathic scoliosis patients included in the Paediatric Spine Research Group Progression Study (n = 531) were assessed. Ossification scoring of pseudo-radiographs and three-dimensional (3D) volume-rendered reconstructions using Risser (1958) quantitative descriptors indicate discrepancies in age estimates, stage allocation, and conflicting morphological progression...
November 25, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27879569/the-azygous-vein-is-at-potential-risk-of-injury-from-mal-positioning-of-left-thoracic-pedicle-screw-in-thoracic-adolescent-idiopathic-scoliosis-patients
#18
Jun Jiang, Bang-Ping Qian, Yong Qiu, Bin Wang, Yang Yu, Ze-Zhang Zhu
STUDY DESIGN: A computed tomography (CT) study OBJECTIVE.: To evaluate the changed position of azygous vein in thoracic adolescent idiopathic scoliosis (AIS) patients and to analyze the potential risk of injury of azygous vein from thoracic pedicle screw placement in these patients. SUMMARY OF BACKGROUND DATA: It has been widely recognized that the anatomic positions of structures adjacent to the vertebrae may change in AIS patients. To date, no study had evaluated such change of azygous vein in AIS patients...
November 22, 2016: Spine
https://www.readbyqxmd.com/read/27879512/uhmwpe-sublaminar-wires-in-posterior-spinal-instrumentation-stability-and-biocompatibility-assessment-in-an-ovine-pilot-study
#19
Rob Bogie, Laura Voss, Jacobus J Arts, Arno Lataster, Paul C Willems, Boudewijn Brans, Lodewijk W van Rhijn, Tim J M Welting
STUDY DESIGN: An animal study. OBJECTIVE: To explore ultra-high molecular weight polyethylene (UHMWPE) sublaminar wires in spinal surgery and to assess stability and biocompatibility of the UHMWPE instrumentation in an ovine model. SUMMARY OF BACKGROUND DATA: Sublaminar wiring is a well-established technique in segmental scoliosis surgery. However, during introduction and/or removal of the metal sublaminar wires, neurological problems can occur...
December 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27852501/longitudinal-pilot-analysis-of-radiation-exposure-during-the-course-of-growing-rod-treatment-for-early-onset-scoliosis
#20
Gregory M Mundis, Jeff B Pawelek, Edward K Nomoto, Michael W Hennessy, Burt Yaszay, Behrooz A Akbarnia
STUDY DESIGN: Retrospective consecutive case series. OBJECTIVES: To estimate the amount of ionizing radiation (IR) exposure in growing rod (GR) surgery for early-onset scoliosis. SUMMARY OF BACKGROUND DATA: There is substantial evidence of the health hazards attributed to IR exposure. However, no studies have estimated the amount of IR exposure in GR surgery. MATERIALS AND METHODS: A consecutive single-center series of GR patients were retrospectively reviewed...
January 2016: Spine Deformity
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