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https://www.readbyqxmd.com/read/28342920/which-is-the-more-appropriate-proximal-fusion-level-for-adult-lumbar-degenerative-flat-back
#1
Jeong-Hoon Choi, Jee-Soo Jang, Hyeun-Sung Kim, Il-Tae Jang
OBJECTIVE: To determine the optimal proximal fusion level after long instrumented fusion to the sacrum for lumbar degenerative flat back. METHODS: Data from 70 patients with lumbar degenerative flat back were reviewed retrospectively. Three groups were designated according to the upper instrumented vertebrae (UIV) : Group 1 (UIV = T10 or above), Group 2 (UIV = T11 to T12), and Group 3 (UIV = L1 or below). Preoperative and postoperative pelvic parameters, degree of correction, and prevalence of proximal junctional kyphosis (PJK) and its risk factors were evaluated...
March 22, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28342586/biomechanical-analysis-of-the-fixation-systems-for-anterior-column-and-posterior-hemi-transverse-acetabular-fractures
#2
Jianyin Lei, Pengfei Dong, Zhiqiang Li, Feng Zhu, Zhihua Wang, Xianhua Cai
OBJECTIVE: The aim of this study was to evaluate the biomechanical properties of common fixation systems for complex acetabular fractures. METHODS: A finite element (FE) pelvic model with anterior column and posterior hemi-transverse acetabular fractures was created. Three common fixation systems were used to fix the posterior wall acetabular fractures: 1. Anterior column plate combined with posterior column screws (group I), 2. Anterior column plate combined with quadrilateral area screws (group II) and 3...
March 22, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28339540/interventional-pain-management-for-sacroiliac-tumors-in-the-oncologic-population-a-case-series-and-paradigm-approach
#3
Nathan Hutson, Joseph C Hung, Vinay Puttanniah, Eric Lis, Ilya Laufer, Amitabh Gulati
Introduction.:  Tumors invading the sacrum and/or ilium often represent incurable metastatic disease, and treatment is targeted toward palliation of symptoms and control of pain. As systemic opioid therapy is frequently inadequate and limited by side effects, a variety of interventional techniques are available to better optimize analgesia. Using six patients as a paradigm for interventional approaches to pain relief, we present a therapeutic algorithm for treating sacroiliac tumor-related pain in the oncologic population...
October 7, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28332986/risk-factors-for-pelvic-insufficiency-fractures-in-locally-advanced-cervical-cancer-following-intensity-modulated-radiation-therapy
#4
Anne Ramlov, Erik Morre Pedersen, Lisbeth Røhl, Esben Worm, Lars Fokdal, Jacob Chr Lindegaard, Kari Tanderup
PURPOSE: To investigate the incidence of and risk factors for pelvic insufficiency fracture (PIF) after definitive chemoradiation therapy for locally advanced cervical cancer (LACC). METHODS AND MATERIALS: We analyzed 101 patients with LACC treated from 2008-2014. Patients received weekly cisplatin and underwent external beam radiation therapy with 45 Gy in 25 fractions (node-negative patients) or 50 Gy in 25 fractions with a simultaneous integrated boost of 60 Gy in 30 fractions (node-positive patients)...
April 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28332863/male-and-female-worldsid-and-post-mortem-human-subject-responses-in-full-scale-vehicle-tests
#5
Narayan Yoganandan, John Humm, Frank Pintar, Heather Rhule, Kevin Moorhouse, Brian Suntay, Jim Stricklin, Rodney Rudd, Matthew Craig
Structured ABSTRACT Objective: To compare the responses of male and female WorldSID dummies with post mortem human subject (PMHS) responses in full-scale vehicle tests. METHODS: Tests were conducted according to the FMVSS-214 protocols and using the United States Side impact New Car Assessment Program change in velocity to match PMHS experiments, published earlier. Moving deformable barrier (MDB) tests were conducted with the male and female surrogates in the left front and left rear seats...
March 23, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28328842/three-dimensional-printing-and-computer-navigation-assisted-hemipelvectomy-for-en-bloc-resection-of-osteochondroma-a-case-report
#6
Yaqing Zhang, Lianjiang Wen, Jun Zhang, Guoliang Yan, Yue Zhou, Bo Huang
RATIONALE: Three-dimensional (3D) printed templates can be designed to match an individual's anatomy, allowing surgeons to refine preoperative planning. In addition, the use of computer navigation (NAV) is gaining popularity to improve surgical accuracy in the resection of pelvic tumors. However, its use in combination with 3D printing to assist complex pelvic tumor resection has not been reported. PATIENT CONCERNS: A 36-year-old man presented with left-sided pelvic pain and a fast-growing mass...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28321171/presacral-venous-bleeding-during-mobilization-in-rectal-cancer
#7
Jose Enrique Casal Núñez, Vincenzo Vigorita, Alejandro Ruano Poblador, Ana María Gay Fernández, Maria Ángeles Toscano Novella, Nieves Cáceres Alvarado, Lucinda Pérez Dominguez
AIM: To analyze the anatomy of sacral venous plexus flow, the causes of injuries and the methods for controlling presacral hemorrhage during surgery for rectal cancer. METHODS: A review of the databases MEDLINE(®) and Embase™ was conducted, and relevant scientific articles published between January 1960 and June 2016 were examined. The anatomy of the sacrum and its venous plexus, as well as the factors that influence bleeding, the causes of this complication, and its surgical management were defined...
March 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28306517/biomechanical-analysis-of-stiffness-and-fracture-displacement-after-using-pmma-augmented-sacroiliac-screw-fixation-for-sacrum-fractures
#8
Andreas Höch, Richard Schimpf, Niels Hammer, Stefan Schleifenbaum, Michael Werner, Christoph Josten, Jörg Böhme
Cement augmentation of pedicle screws is the gold standard for the stabilization of osteoporotic fractures of the spine. In-screw cement augmentation, in which cement is injected through the cannula, is another option for fracture stabilization of fragility fractures of the sacrum. However, biomechanical superiority of this technique compared to conventional sacroiliac screw fixation has not been tested. The present study compares the stability of cement-augmented and non-cement-augmented sacroiliac screw fixation in osteoporotic sacrum fractures under cyclic loading...
March 15, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28303067/intraspinal-meningioma-with-malignant-transformation-and-distant-metastasis
#9
Kenyu Ito, Shiro Imagama, Kei Ando, Kazuyoshi Kobayashi, Yoji Shido, Yoshida Go, Hideyuki Arima, Shunsuke Kanbara, Takanori Hirose, Yukihiro Matsuyama, Yoshihiro Nishida, Naoki Ishiguro
Meningioma is typically considered to be a benign tumor. Malignant transformation and metastasis of meningiomas are rare. Moreover, most meningiomas are intracranial, and there are few reports on intraspinal meningiomas. This report aimed to describe the clinical features and pathological findings of a case of malignant transformation and distant metastasis of intraspinal meningioma, with a review of the literature. A 44-year-old man with a bilateral lower limb paresis was diagnosed with an intradural extramedullary tumor of the thoracic spine...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28302173/squamous-cell-carcinoma-arising-from-chronic-sacrococcygeal-pilonidal-disease-a-case-report
#10
Nick Michalopoulos, Konstantinos Sapalidis, Styliani Laskou, Evangelia Triantafyllou, Georgia Raptou, Isaak Kesisoglou
BACKGROUND: Sacrococcygeal pilonidal disease is a chronic, well-recognized entity, characterized by the recurrent formation of an abscess or draining sinus over the sacrococcygeal area. It is one of the most common surgical problems. Rarely, chronic inflammation and recurrent disease leads to malignant transformation, most commonly to squamous cell carcinoma (SCC). CASE PRESENTATION: We describe an extremely unusual case of SCC developing in a 60-year-old patient with a chronic pilonidal sinus complicated by an anal fistula...
March 17, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28295295/palynological-investigation-of-mummified-human-remains
#11
Karl J Reinhard, Marina Milanello do Amaral, Nicole Wall
Pollen analysis was applied to a mummified homicide victim in Nebraska, U.S.A., to determine the location of death. A control sample showed the normal ambient pollen in the garage crime scene. Ambient windborne types, common in the air of the region, dominated the control. Internal samples were analyzed from the sacrum, intestine, and diaphragm. Microfossils were recovered from the rehydrated intestine lumen. The intestinal sample was dominated by Brassica (broccoli). The sacrum sample was high in dietary types but with a showing of ambient types...
March 10, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28293486/sacral-insufficiency-fractures-recognition-and-treatment-in-patients-with-concurrent-lumbar-vertebral-compression-fractures
#12
Jesse Hatgis, Michelle Granville, Robert E Jacobson, Aldo Berti
INTRODUCTION: In reviewing a larger group of osteoporotic vertebral compression fractures (VCFs), we found that the overall incidence of sacral insufficiency fractures (SIFs) is higher than commonly reported values. This is especially seen in patients with previous or concurrent lumbar VCFs and also in a subgroup that had lumbar stenosis or hip arthroplasty. The altered biomechanics due to associated lumbar stenosis or hip arthroplasty lead to increased mechanical stress on already weakened and deficient sacral alae, which are more vulnerable to osteoporotic weakening than other parts of the sacrum...
February 2, 2017: Curēus
https://www.readbyqxmd.com/read/28291409/association-between-bicortical-screw-fixation-at-upper-instrumented-vertebra-and-risk-for-upper-instrumented-vertebra-fracture
#13
Young-Seop Park, Seung-Jae Hyun, Ho Yong Choi, Ki-Jeong Kim, Tae-Ahn Jahng
OBJECTIVE The aim of this study was to investigate the risk of upper instrumented vertebra (UIV) fractures associated with UIV screw fixation (unicortical vs bicortical) and polymethylmethacrylate (PMMA) augmentation after adult spinal deformity surgery. METHODS A single-center, single-surgeon consecutive series of adult patients who underwent lumbar fusion for ≥ 4 levels (that is, the lower instrumented vertebra at the sacrum or pelvis and the UIV of the thoracolumbar spine [T9-L2]) were retrospectively reviewed...
March 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28291010/ectopic-pelvic-kidney-mimicking-sacral-metastasis-on-post-therapy-iodine-131-scan-of-a-thyroid-cancer-patient
#14
Selin Soyluoğlu Demir, Gül Ege Aktaş, Ahmet Polat, Ali Sarıkaya
A 25-year-old woman had total thyroidectomy and iodine-131 ablation therapy for papillary thyroid carcinoma. Whole body imaging on the 7(th) day of therapeutic activity demonstrated radioiodine uptake in the remnant tissue and intense heterogeneous uptake at the sacral region prominently in the posterior image. Initial interpretation was suspicious for sacral metastasis. Technetium-99m-methylene diphosphonate bone scan demonstrated normal bone uptake and the absence of left kidney. On blood-pool phase of bone scan, the absence of left renal activity and an extra area of uptake in the sacral region suggestive of pelvic kidney were noticed...
February 5, 2017: Molecular Imaging and Radionuclide Therapy
https://www.readbyqxmd.com/read/28270686/two-new-sacrolide-class-oxylipins-from-the-edible-cyanobacterium-aphanothece-sacrum
#15
Naoya Oku, Sayaka Hana, Miyako Matsumoto, Kohsuke Yonejima, Keijiroh Tansei, Yasuhiro Isogai, Yasuhiro Igarashi
No abstract text is available yet for this article.
March 8, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28270058/internal-fixation-of-s1-s3-iliosacral-screws-and-pubic-screw-as-the-best-configuration-for-unstable-pelvic-fracture-with-unilateral-vertical-sacral-fracture-ao-type-c1-3
#16
Ismail Hadisoebroto Dilogo, Oryza Satria, Jessica Fiolin
BACKGROUND: Although internal fixation is the definitive treatment in unstable pelvic fractures with disruption of the anterior arch and a vertical fracture of the sacrum (AO type C1.3), there have been no agreement of the best technique of internal fixation yet. We aimed to derive comparable objective data on stiffness and load to failure in this type of fracture fixations. METHODS: Synbone was modified into AO type C1.3 fracture model, while treatments were divided into six internal fixation treatment groups using tension band plate (TBP), symphysis pubis plate (SP) with iliosacral screw at S1 and S2 (IS S1-S2), pubic screw (PS) with iliosacral TBP, PS and IS S1-S2, SP and IS S1-S3, PS and S1-S3 and finally PS and IS S1-S3...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28264240/a-nation-wide-epidemiological-study-of-newly-diagnosed-primary-spine-tumor-in-the-adult-korean-population-2009-2011
#17
Seil Sohn, Jinhee Kim, Chun Kee Chung, Na Rae Lee, Moon Jun Sohn, Sung Hwan Kim
OBJECTIVE: This 2009-2011 nation-wide study of adult Koreans was aimed to provide characteristics, medical utilization states, and survival rates for newly diagnosed patients with primary nonmalignant and malignant spine tumors. METHODS: Data for patients with primary spine tumors were selected from the Korean Health Insurance Review and Assessment Service database. The data included their age, sex, health insurance type, co-morbidities, medical cost, and hospital stay duration...
March 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28261428/association-between-sacral-slanting-and-adjacent-structures-in-patients-with-adolescent-idiopathic-scoliosis
#18
Jae Hwan Cho, Choon Sung Lee, Youn-Suk Joo, Jungu Park, Chang Ju Hwang, Dong-Ho Lee
BACKGROUND: Sacral slanting is a frequent unique phenomenon in patients with adolescent idiopathic scoliosis (AIS) and may be important for selecting the distal fusion level. However, the reason of the phenomenon remains unknown. The purpose of this study was to determine the association between sacral slanting and adjacent structures in patients with AIS. METHODS: A total of 303 AIS patients who underwent both whole spine standing anteroposterior (AP) and whole leg standing AP radiography were included...
March 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/28255503/outcome-and-2-year-survival-rate-in-elderly-patients-with-lateral-compression-fractures-of-the-pelvis
#19
Andreas Höch, Orkun Özkurtul, Philipp Pieroh, Christoph Josten, Jörg Böhme
INTRODUCTION: Osteoporotic pelvic ring fractures are a rising problem for surgeons in industrialized countries. There is no evidence-based treatment strategy especially for lateral compression (LC) fractures involving the sacrum. The aim of this study was to evaluate and compare outcome and survival rate of nonoperative and operative treatment strategies for lateral compression fractures. PATIENTS AND METHODS: In a retrospective study, 128 patients (aged ≥65 years) with an Orthopedic Trauma Association (OTA) types B2...
March 2017: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/28247980/critical-dimensions-of-trans-sacral-corridors-assessed-by-3d-ct-models-relevance-for-implant-positioning-in-fractures-of-the-sacrum
#20
Daniel Wagner, Lukas Kamer, Takeshi Sawaguchi, R Geoff Richards, Hansrudi Noser, Masafumi Uesugi, Christian Ossendorf, Pol M Rommens
Trans-sacral implants can be used alternatively to sacro-iliac screws in the treatment of osteoporosis-associated fragility fractures of the pelvis and the sacrum. We investigated trans-sacral corridor dimensions, the number of individuals amenable to trans-sacral fixation, as well as the osseous boundaries and shape of the S1 corridor. 3D models were reconstructed from pelvic CT scans from 92 Europeans and 64 Japanese. A corridor of <12 mm was considered critical for trans-sacral implant positioning, and <8 mm as impossible...
March 1, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
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