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https://www.readbyqxmd.com/read/28075029/does-cortical-bone-thickness-in-the-last-sacral-vertebra-differ-among-tail-types-in-primates
#1
Abigail C Nishimura, Gabrielle A Russo
OBJECTIVES: The external morphology of the sacrum is demonstrably informative regarding tail type (i.e., tail presence/absence, length, and prehensility) in living and extinct primates. However, little research has focused on the relationship between tail type and internal sacral morphology, a potentially important source of functional information when fossil sacra are incomplete. Here, we determine if cortical bone cross-sectional thickness of the last sacral vertebral body differs among tail types in extant primates and can be used to reconstruct tail types in extinct primates...
January 11, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28065717/muscle-complex-saving-posterior-sagittal-anorectoplasty
#2
Maher Zaiem, Feras Zaiem
INTRODUCTION: Posterior sagittal anorectoplasty (PSARP) published by DeVries and Peña in 1982 had become the preferred surgical technique for the management of anorectal malformations (ARM). The original technique is based upon complete exposure of the anorectal region by means of a median sagittal incision that runs from the sacrum to the anal dimple, cutting through all muscle structures behind the rectum by dividing the levator muscle and the muscle complex. Then, the rectum is located in front of the levator and within the limits of the muscle complex...
December 27, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28063724/pressure-injury-prevalence-in-intensive-care-versus-non-intensive-care-patients-a-state-wide-comparison
#3
Fiona Coyer, Sandra Miles, Sandra Gosley, Paul Fulbrook, Kirstine Sketcher-Baker, Jane-Louise Cook, Jacqueline Whitmore
BACKGROUND: Hospital-acquired pressure injury is associated with increased morbidity and mortality and considered to be largely preventable. Pressure injury prevalence is regarded as a marker of health care quality. OBJECTIVE: To compare the state-wide prevalence, severity and location of pressure injuries of intensive care unit patients compared to patients in non-intensive care wards. METHOD: The study employed a secondary data analysis design to extract and analyse de-identified pressure injury data from all Queensland Health hospitals with level I-III intensive care facilities that participated in Queensland Bedside Audits between 2012-2014...
January 4, 2017: Australian Critical Care: Official Journal of the Confederation of Australian Critical Care Nurses
https://www.readbyqxmd.com/read/28059910/validation-of-mri-and-surgical-decision-making-to-predict-a-complete-resection-in-pelvic-exenteration-for-recurrent-rectal-cancer
#4
Wendy E Brown, Cherry E Koh, Tim Badgery-Parker, Michael J Solomon
BACKGROUND: The main predictor of long-term survival in patients with recurrent rectal cancer is surgical resection with a clear resection margin. MRI plays a role in patient selection and surgical planning. OBJECTIVE: This study aimed to validate MRI in determining pelvic involvement by comparing MRI to histological outcomes, to assess the effect of MRI on surgical planning by comparing MRI findings with the surgical procedure, and to compare MRI anatomical involvement with resection outcome to assess if MRI can predict a clear resection margin...
February 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28051823/lumbar-sympathetic-chain-anatomical-variation-and-clinical-perspectives
#5
P Jain, K Raza, S Singh, C Kumari, S Kaler, N Rani
The sympathetic and parasympathetic nervous systems constitute the autonomic nervous system which controls the entropy of the body and maintain the equilibrium. The sympathetic chain forms a definitive anatomic entity which is quite variable with respect to its position and the number of ganglia. The sympathetic nervous system causes vasoconstriction and thus forms the basis of Lumbar sympathetic surgeries being performed in patients with peripheral vascular diseases. The anatomic variations in this region hence gains immense importance for the operating surgeons and consulting radiologists...
November 2016: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28048721/su-f-j-222-using-pet-imaging-to-evaluate-proliferation-and-blood-flow-in-irradiated-and-non-irradiated-bone-marrow-1-year-after-chemoradiation-therapy
#6
S McGuire, L Ponto, Y Menda
PURPOSE: To compare proliferation and blood flow in pelvic and thoracic bone marrow 1 year after pelvic chemoradiation. METHODS: Sixteen pelvic cancer patients were enrolled in an IRB-approved protocol to acquire FLT PET images during radiation therapy simulation (baseline) and 1 year after chemoradiation therapy. Three subjects also had optional O-15 water PET images acquired 1 year after chemoradiation therapy. Baseline FLT PET images were used to create IMRT plans to spare pelvic bone marrow identified as regions with FLT SUV ≥ 2 without compromising PTV coverage or OAR sparing...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048336/su-f-j-150-development-of-an-end-to-end-chain-test-for-the-first-in-man-mr-guided-treatments-with-the-mri-linear-accelerator-by-using-the-alderson-phantom
#7
S Hoogcarspel, L Kerkmeijer, J Lagendijk, M Van Vulpen, B Raaymakers
The Alderson phantom is a human shaped quality assurance tool that has been used for over 30 years in radiotherapy. The phantom can provide integrated tests of the entire chain of treatment planning and delivery. The purpose of this research was to investigate if this phantom can be used to chain test a treatment on the MRI linear accelerator (MRL) which is currently being developed at the UMC Utrecht, in collaboration with Elekta and Philips. The latter was demonstrated by chain testing the future First-in-Man treatments with this system...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047528/su-f-r-55-early-detection-of-treatment-induced-bone-marrow-injury-during-chemoradiation-therapy-using-quantitative-ct
#8
X Chen, Y Song, B Erickson, X Li
PURPOSE: Acute hematologic toxicity associated with bone marrow injury is a common complication of chemoradiation therapy (CRT) for pelvic malignancies. In this work, we investigate the feasibility of using quantitative CT to detect bone marrow injury during CRT. METHODS: Daily CTs were acquired during routine CT-guided radiation therapy using a CT-on-rails for 15 cervical cancer patients. All patients treated with a radiation dose of 45.0 to 50.4 Gy in 1.8 Gy/fraction along with chemotherapy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046444/su-d-207a-01-female-pelvic-synthetic-ct-generation-based-on-joint-shape-and-intensity-analysis
#9
L Liu, S Jolly, Y Cao, K Vineberg, J Fessler, J Balter
PURPOSE: To develop a method for generating female pelvic synthetic CT (MRCT) images from a single MR scan and evaluate its utility in radiotherapy. METHODS: Under IRB-approval, an imaging sequence (T1_VIBE_Dixon) was acquired for 10 patients. This sequence yields 3 useful image volumes of different contrast ("in-phase" T1-weighted, fat and water). A previously published pelvic bone shape model was used to generate a rough bone mask for each patient. A modified fuzzy c-means classification was performed on the multi spectral MR data, with a regularization term that utilizes the prior knowledge provided by the bone mask and addresses the intensity overlap between different tissue types...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046323/su-f-t-642-sub-millimeter-accurate-setup-of-more-than-three-vertebrae-in-spinal-sbrt-with-6d-couch
#10
X Wang, Z Zhao, J Yang, J Yang, M McAleer, P Brown, J Li, A Ghia
PURPOSE: To assess the initial setup accuracy in treating more than 3 vertebral body levels in spinal SBRT using a 6D couch. METHODS: We retrospectively analyzed last 20 spinal SBRT patients (4 cervical, 9 thoracic, 7 lumbar/sacrum) treated in our clinic. These patients in customized immobilization device were treated in 1 or 3 fractions. Initial setup used ExacTrac and Brainlab 6D couch to align target within 1 mm and 1 degree, following by a cone beam CT (CBCT) for verification...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28041320/image-guided-resection-of-aggressive-sacral-tumors
#11
Doniel Drazin, Neil Bhamb, Lutfi T Al-Khouja, Ari D Kappel, Terrence T Kim, J Patrick Johnson, Earl Brien
OBJECTIVE The aim of this study was to identify and discuss operative nuances utilizing image guidance in the surgical management of aggressive sacral tumors. METHODS The authors report on their single-institution, multi-surgeon, retrospective case series involving patients with pathology-proven aggressive sacral tumors treated between 2009 and 2016. They also reviewed the literature to identify articles related to aggressive sacral tumors, their diagnosis, and their surgical treatment and discuss the results together with their own experience...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28039353/fluoroscopy-guided-sacroiliac-intraarticular-injection-via-the-middle-portion-of-the-joint
#12
Daisuke Kurosawa, Eiichi Murakami, Toshimi Aizawa
: OBJECTIVE : Sacroiliac intraarticular injection is necessary to confirm sacroiliac joint (SIJ) pain and is usually performed via the caudal one-third portion of the joint. However, this is occasionally impossible for anatomical reasons, and the success rate is low in clinical settings. We describe a technique via the middle portion of the joint. DESIGN : Observational study. SUBJECTS : Enrolled were 69 consecutive patients (27 men and 42 women, with an average age of 53 years) in whom the middle portion of 100 joints was targeted...
December 30, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28035463/sacral-nerve-stimulation-for-faecal-incontinence-in-patients-with-sacral-malformation
#13
M Brunner, Z Cui, K E Matzel
INTRODUCTION: Sacral nerve stimulation (SNS) is a common and effective treatment for faecal incontinence (FI), but accessibility of the sacral nerves is mandatory. In some cases, electrode placement fails for unknown reasons. A frequent cause could be sacral malformations, which have a high incidence (up to 24.1%) and can be unsuspected. METHODS AND RESULTS: We report two patients with FI consequent to congenital anorectal malformation and associated sacral malformation...
December 30, 2016: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28035443/effect-of-mesh-width-on-apical-support-after-sacrocolpopexy
#14
Sunil Balgobin, Joseph L Fitzwater, Donald D McIntire, Imelda J Delgado, Clifford Y Wai
INTRODUCTION AND HYPOTHESIS: We evaluated the effect of polypropylene mesh width on vaginal apical support, mesh elongation, and mesh tensile strength for abdominal sacrocolpopexy. METHODS: Abdominal sacrocolpopexy was performed on ten cadavers using pieces of polypropylene mesh of width 1, 2, and 3 cm. Weights of 1, 2, 3, and 4 kg were sequentially applied to the vagina. The total distance moved by the vaginal apex, and the amount of stretch of the intervening mesh segment between the sacrum and the vagina were recorded for each width...
December 29, 2016: International Urogynecology Journal
https://www.readbyqxmd.com/read/28028448/a-novel-technique-to-repair-a-transverse-sacral-fracture-in-a-previously-fused-lumbosacral-spondylolisthesis
#15
Thomas Noh, Mokbel K Chedid
BACKGROUND: Transverse fractures of the sacrum are rare, and surgical treatment for these fractures ranges from conservative to challenging. Transverse stress fractures of the sacrum after placement of lumbar-to-sacral instrumentation have been previously described. We report a new technique to repair a transverse Type-2 Roy-Camille fracture with spondylolisthesis of S1 over S2 in a previously fused instrumented high-grade L4-L5, L5-S1 spondylolisthesis. CASE DESCRIPTION: A 64-year-old female who previously had an L4-L5, L5-S1 fusion for spondylolisthesis presented with excruciating lower back pain and radiculopathy for over 6 months...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/28028447/spinal-epidural-abscess-in-a-patient-with-piriformis-pyomyositis
#16
Gerald S Oh, Hussam Abou-Al-Shaar, Gregory D Arnone, Ashley L Barks, Ziad A Hage, Sergey Neckrysh
BACKGROUND: Spinal epidural abscess resulting from piriformis pyomyositis is extremely rare. Such condition can result in serious morbidity and mortality if not addressed in a timely manner. CASE DESCRIPTION: The authors describe the case of a 19-year-old male presenting with a 2-week history of fever, low back pain, and nuchal rigidity. When found to have radiographic evidence of a right piriformis pyomyositis, he was transferred to our institution for further evaluation...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/28025024/cervical-sagittal-alignment-in-adolescent-idiopathic-scoliosis-patients-lenke-type-1-6
#17
Lianlei Wang, Xinyu Liu
OBJECTIVE: We collected the radiographic and clinical data of 129 AIS patients (Lenke type 1-6) to analyze the characteristics of cervical sagittal alignment in adolescent idiopathic scoliosis patients and the correlations between cervical sagittal alignment and global sagittal alignment, and clinical symptoms. METHODS: 129 patients with AIS and 48 adolescent volunteers were included in this study. The angles of the main thoracic curve, proximal thoracic curve, thoracolumbar curve, lumbar curve, C2-7 Cobb angle, T5-12 Cobb angle, L1-5 Cobb angle, pelvic incidence, pelvic tilt, sacrum slop, C2-7 sagittal vertical axis, C7-S1 sagittal vertical axis, and T1 pelvic angle were included in radiographic measurements...
December 23, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28018758/cervical-fracture-subluxation-in-a-patient-with-a-prior-c2-sacrum-fusion-case-report-and-review-of-literature
#18
Yi-Ren Chen, Alvin Y Chan, Kevin K Kumar, Anand Veeravagu
Traumatic injury to an adjacent segment of a previously fused spine is a rare complication of scoliosis surgery. The adjacent spinal segments may be more vulnerable to traumatic fracture or dislocation due to increased strain. We present a patient with prior C2 to sacrum fusion who suffered a C2 fracture/dislocation after falling. A 52-year-old female with a previous C2 to the sacrum fusion for idiopathic scoliosis presented with severe and progressively worsening neck pain after multiple falls. Imaging showed anterior displacement of the C2 vertebral body, fracture of C2, and anterior subluxation of the C1-2 complex on C3...
November 22, 2016: Curēus
https://www.readbyqxmd.com/read/28004324/ct-characteristics-of-traumatic-sacral-fractures-in-association-with-pelvic-ring-injuries-correlation-using-the-young-burgess-classification-system
#19
Nicholas Beckmann, Chunyan Cai
PURPOSE: The purpose of the study is to determine the incidence of sacral fracture patterns on CT imaging of pelvic trauma patients with correlation with mechanism of injury and pelvic ring injury pattern using the Young-Burgess classification system. MATERIALS AND METHODS: This is a retrospective review of all pelvic CTs with pelvic fractures performed at our level 1 trauma center during a 4-year period from July 2010 to June 2014. RESULTS: Sacral fractures were very common in pelvic trauma patients, being present in 60% of patients presenting to our institution with pelvic fractures...
December 21, 2016: Emergency Radiology
https://www.readbyqxmd.com/read/27997504/surgical-treatment-of-primary-osteosarcoma-of-the-sacrum-a-case-series-of-26-patients
#20
Yifei Wang, Wei Guo, Danhua Shen, Xiaodong Tang, Yi Yang, Tao Ji, Xiaolong Xu
STUDY DESIGN: Twenty-six patients were treated surgically for sacral osteosarcomas in our center. The oncological and functional results are analyzed. OBJECTIVE: To describe the general characteristics and evaluate the outcome of surgical treatment of primary osteosarcoma of the sacrum. SUMMARY OF BACKGROUND DATA: Very few reports have addressed the technique and outcome of surgical treatment of primary sacral osteosarcoma. The survival rate of such cases is low...
December 16, 2016: Spine
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