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https://www.readbyqxmd.com/read/29349376/directional-tip-control-technique-for-optimal-stent-graft-alignment-in-angulated-proximal-aortic-landing-zones
#1
Toshio Takayama, Patrick J Phelan, Jon S Matsumura
Angulated anatomy in the aorta, such as tortuous infrarenal aortic necks or steep aortic arches, is a significant challenge for endovascular aortic repair because it often causes inadequate sealing and fixation, which may lead to treatment failure. We have developed a technique using off-the-shelf equipment to precisely control the deployment of stent grafts in challenging landing zones. The key of this technique is to create a through-and-through wire between two access sites and to use a guiding device over the wire...
June 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29333208/integrating-cadaver-needle-forces-into-a-haptic-robotic-simulator
#2
David F Pepley, Mary A Yovanoff, Katelin A Mirkin, Scarlett R Miller, David C Han, Jason Z Moore
Accurate force simulation is essential to haptic simulators for surgical training. Factors such as tissue inhomogeneity pose unique challenges for simulating needle forces. To aid in the development of haptic needle insertion simulators, a handheld force sensing syringe was created to measure the motion and forces of needle insertions. Five needle insertions were performed into the neck of a cadaver using the force sensing syringe. Based on these measurements a piecewise exponential needle force characterization, was implemented into a haptic central venous catheterization (CVC) simulator...
March 2018: Journal of Medical Devices
https://www.readbyqxmd.com/read/29327561/hostility-of-proximal-aortic-neck-anatomy-in-relation-to-abdominal-aortic-aneurysm-size-and-its-impact-on-the-outcome-of-endovascular-repair-with-the-new-generation-endografts
#3
Christos Karathanos, Konstantinos Spanos, George Kouvelos, Athanasios Athanasoulas, Stylianos Koutsias, Miltiadis Matsagkas, Athanasios D Giannoukas
BACKGROUND: To assess the relation of abdominal aortic aneurysm (AAA) diameter with the proximal neck anatomy (PNA) hostility and to evaluate its impact on the endovascular aneurysm repair (EVAR) outcomes with the use of newer generation endografts. METHODS: Retrospective analysis of single institution's recorded data from February 2009 to April 2016. Patients' characteristics, co-morbidities, aortic morphology, perioperative characteristics and outcomes were analyzed...
January 9, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29322292/bilateral-symmetrical-comparison-of-the-proximal-femur-using-3d-ct-models
#4
Filip C Dolatowski, Max J Temmesfeld, Claude Pierre-Jerome, Arne Borthne, Sigurd Erik Hoelsbrekken
PURPOSE: Superimposed three-dimensional (3D)-models obtained from CT-images have been used to evaluate displacement of femoral neck fractures, but this method assumes symmetrical anatomy of normal femurs. The present study aimed to compare the spatial orientation of the left and right proximal femur, thus establishing if 3D models can be used as a reference standard for the evaluation of fracture displacement. METHODS: We generated 3D-CT-models of 20 patients with no skeletal pathology of the proximal femurs...
January 10, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29298295/synchrotron-microtomography-of-a-nothosaurus-marchicus-skull-informs-on-nothosaurian-physiology-and-neurosensory-adaptations-in-early-sauropterygia
#5
Dennis F A E Voeten, Tobias Reich, Ricardo Araújo, Torsten M Scheyer
Nothosaurs form a subclade of the secondarily marine Sauropterygia that was well represented in late Early to early Late Triassic marine ecosystems. Here we present and discuss the internal skull anatomy of the small piscivorous nothosaur Nothosaurus marchicus from coastal to shallow marine Lower Muschelkalk deposits (Anisian) of Winterswijk, The Netherlands, which represents the oldest sauropterygian endocast visualized to date. The cranial endocast is only partially encapsulated by ossified braincase elements...
2018: PloS One
https://www.readbyqxmd.com/read/29287855/branchial-anomalies-in-children-a-report-of-105-surgical-cases
#6
Wanpeng Li, Hongming Xu, Liming Zhao, Xiaoyan Li
BACKGROUND: Branchial anomalies (BAs) account for 20% of all congenital masses in children. We sought to review the incidence of involvement of individual anomalies, diagnostic methods, surgical treatment, and complications of BAs in children. In addition, we also classified our study and analyzed a congenital lower neck cutaneous fistula near the sternoclavicular joint that was thought to be the skin-side remnant of the fourth BAs. METHODS: We conducted a retrospective analysis of 105 children who were referred to our hospital from June 2009 to December 2016 for the treatment of BAs...
January 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29279983/surgical-anatomy-of-neurovascular-structures-related-to-ventral-c1-2-complex-an-anatomical-study
#7
Sibel Cirpan, Salih Sayhan, Goksin Nilufer Yonguc, Canan Eyuboglu, Mustafa Güvençer, Sait Naderi
OBJECTIVE: Transoral odontoidectomy and ventral C1-2 stabilization are important surgical procedures, performed to decompress ventral spinal cord, and to stabilize craniovertebral junction. These procedures require knowledge regarding surgical anatomy of neurovascular structures ventral to the C1-2 complex. The aim of this study is to evaluate the relationships between neurovascular structures and bony landmarks in ventral atlantoaxial complex. MATERIALS AND METHODS: This study was performed on six formaldehyde fixed cadaveric head and neck specimens...
December 26, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29279976/clinical-outcomes-of-endovascular-aneurysm-repair-with-the-kilt-technique-for-abdominal-aortic-aneurysms-with-hostile-aneurysm-neck-anatomy-a-korean-multicenter-retrospective-study
#8
Yong Sun Jeon, Young Kwon Cho, Myung Gyu Song, Tae-Seok Seo, Jeong Ho Kim, Soon-Young Song, Sam Yeol Lee
PURPOSE: We aimed to evaluate the clinical efficacy and short-term clinical outcomes of Kilt technique-based endovascular aneurysm repair (EVAR) with Seal® stent-grafts for abdominal aortic aneurysms (AAAs) with hostile neck anatomy (angle > 60°). MATERIALS AND METHODS: We retrospectively evaluated the pre-EVAR and follow-up computed tomography angiography findings of 24 patients (mean age 71 ± 11 years; age range 32-87 years; mean follow-up 50 ± 12 months) with hostile neck AAAs treated between 2010 and 2015...
December 26, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29277793/retzius-sparing-robotic-assisted-radical-prostatectomy-associated-with-less-bladder-neck-descent-and-better-early-continence-outcome
#9
Li-Wen Chang, Sheng-Chun Hung, Ju-Chuan Hu, Kun-Yuan Chiu
BACKGROUND/AIM: We attempted to evaluate the association of early continence outcome of Retzius-sparing robotic assisted radical prostatectomy (RARP) and bladder neck descent with postoperative cystography. PATIENTS AND METHODS: From November 2014 to December 2015, 30 patients with prostate cancer who received Retzius-sparing LRP/ RARP were compared to 30 patients that received retropubic approach RARP with propensity score matching analysis. Cystogram was used to evaluate the bladder neck descent using the bladder neck to pubic symphysis (BNPS) ratio and the continence state was evaluated...
January 2018: Anticancer Research
https://www.readbyqxmd.com/read/29249632/perforator-flaps-from-the-lower-leg-for-intraoral-reconstruction-experience-of-131-flaps
#10
Klaus-Dietrich Wolff, Andrea Rau, Andreas Kolk
BACKGROUND: During the last decade, perforator flaps have become popular for defect cover in the head and neck because they increase the choice of reconstructive possibilities and can lead to minimal donor site morbidity. In particular, the lower leg is considered a suitable option, as it provides thin and pliable skin for intraoral lining. Having gained experience with 131 flaps raised from four different donor sites at the lower leg, the aim of this paper is to evaluate success rates and patient satisfaction, but also difficulties and pitfalls during flap transfer...
November 26, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29246717/comparative-analysis-of-the-reconstruction-of-individual-hip-anatomy-using-3-different-cementless-stem-designs-in-patients-with-primary-hip-osteoarthritis
#11
Moritz M Innmann, Katrin Spier, Marcus R Streit, Peter R Aldinger, Thomas Bruckner, Tobias Gotterbarm, Christian Merle
BACKGROUND: We questioned whether there was a radiographic difference in hip geometry reconstruction and implant fixation between 3 different cementless stem design concepts in patients with primary end-stage hip osteoarthritis. METHODS: We retrospectively evaluated the preoperative and postoperative radiographs by 2 independent and blinded reviewers in a series of 264 consecutive patients who had received either a straight double-tapered stem with 3 offset options (group A), a straight double-tapered stem with 2 shape options and modular necks (group B), and a bone-preserving curved tapered stem with 4 offset options (group C)...
November 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29238099/8-f-balloon-guide-catheter-for-embolization-of-anterior-circulation-aneurysms-an-institutional-experience-in-152-patients
#12
Tomotaka Ohshima, Chinmaya Dash, Andrey Belayev, Taiki Yamamoto, Shunsaku Goto, Yoko Kato
The use of 8-F balloon guide catheter (BGC) for proximal flow control was previously shown to prevent distal embolic complications during mechanical clot retrieval in patients with acute ischemic stroke. In this retrospective study, the utility of 8-F BGCs for proximal flow control during endovascular coiling of anterior circulation aneurysms was investigated. Patients who underwent endovascular coiling for anterior circulation aneurysms between August 2013 and December 2016 were retrospectively analyzed. Among a total of 152 patients included in this series, 64 patients presented with aneurysmal rupture, whereas the aneurysms were detected incidentally or due to mass effects in the remaining patients...
November 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/29234647/radiographic-anatomy-of-the-proximal-femur-femoral-neck-fracture-vs-transtrochanteric-fracture
#13
Ana Lecia Carneiro Leão de Araújo Lima, Saul Caldas Miranda, Hudson Felipe Oliveira de Vasconcelos
Objective: To evaluate the correlation between radiographic parameters of the proximal femur with femoral neck fractures or transtrochanteric fractures. Methods: Cervicodiaphyseal angle (CDA), femoral neck width (FNW), hip axis length (HAL), and acetabular tear drop distance (ATD) were analyzed in 30 pelvis anteroposterior view X-rays of patients with femoral neck fractures (n = 15) and transtrochanteric fractures (n = 15). The analysis was performed by comparing the results of the X-rays with femoral neck fractures and with transtrochanteric fractures...
November 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29234624/thyroidectomy-improves-tracheal-anatomy-and-airflow-in-patients-with-nodular-goiter-a-prospective-cohort-study
#14
Jesper Roed Sorensen, Jeppe Faurholdt Lauridsen, Helle Døssing, Nina Nguyen, Laszlo Hegedüs, Steen Joop Bonnema, Christian Godballe
Objective: A large goiter may cause compression of the trachea. The aim of this study was to investigate the impact of thyroidectomy on tracheal anatomy and airflow and to correlate this with changes in health-related quality of life (HRQoL) in patients with benign nodular goiter. Methods: Magnetic resonance images of the neck and respiratory flow-volume curves, including both inspiration and expiration, were performed prior to and 6 months following surgery. HRQoL was measured by selected scales from the thyroid-specific patient-reported outcome (ThyPRO)...
November 2017: European Thyroid Journal
https://www.readbyqxmd.com/read/29232883/same-abbreviated-injury-scale-values-may-be-associated-with-different-risks-to-mortality-in-trauma-patients-a-cross-sectional-retrospective-study-based-on-the-trauma-registry-system-in-a-level-i-trauma-center
#15
Cheng-Shyuan Rau, Shao-Chun Wu, Pao-Jen Kuo, Yi-Chun Chen, Peng-Chen Chien, Hsiao-Yun Hsieh, Ching-Hua Hsieh
The Abbreviated Injury Scale (AIS) measures injury severity of a trauma patient with a numeric method for ranking anatomy-based specific injuries. The summation of the squares of the three most severe injuries in the AIS of six predefined body regions comprises the Injury Severity Score (ISS). It assumes that the mortality of a given AIS value is similar across all body regions. However, such an assumption is less explored in the literature. In this study, we aimed to compare the mortality rates of the patients with the same AIS value in different injured body regions in a level I trauma center...
December 11, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29231592/-ultrasonic-imaging-research-at-ashi-points-in-neck-type-cervical-spondylosis
#16
Xiaoming Wu, Fengwei Tian, Zhaopeng Xie, Guifang Dong, Jianjun Li, Xi Zhou
OBJECTIVE: To conduct the preliminary positioning and qualitative research of high-frequency ultrasonic imaging at Ashi points (including tender points and trigger points) in neck-type cervical spondylosis and explore the relevant law so as to provide the evidence for the selection of acupuncture scheme. METHODS: Thirty patients in compliance with the diagnostic criteria of neck-type cervical spondylosis were selected. The trigger points, tender points and placebo points were positioned on any of the three available oriented lines...
April 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29229323/mri-based-assessment-of-3d-intrafractional-motion-of-head-and-neck-cancer-for-radiation%C3%A2-therapy
#17
Oliver J Gurney-Champion, Dualta McQuaid, Alex Dunlop, Kee H Wong, Liam C Welsh, Angela M Riddell, Dow-Mu Koh, Uwe Oelfke, Martin O Leach, Christopher M Nutting, Shreerang A Bhide, Kevin J Harrington, Rafal Panek, Kate L Newbold
PURPOSE: To determine the 3-dimensional (3D) intrafractional motion of head and neck squamous cell carcinoma (HNSCC). METHODS AND MATERIALS: Dynamic contrast-enhanced magnetic resonance images from 56 patients with HNSCC in the treatment position were analyzed. Dynamic contrast-enhanced magnetic resonance imaging consisted of 3D images acquired every 2.9 seconds for 4 minutes 50 seconds. Intrafractional tumor motion was studied in the 3 minutes 43 seconds of images obtained after initial contrast enhancement...
October 16, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29225128/aortic-anatomy-and-complications-of-the-proximal-sealing-zone-after-endovascular-treatment-of-the-thoracic-aorta
#18
Jérémie Peidro, Mourad Boufi, Anderson Loundou, Olivier Hartung, Bianca Dona, Florent Vernet, David Bensoussan, Yves Alimi
BACKGROUND: The technical and clinical success of the thoracic aortic endovascular procedures rests mainly on the choice of the proximal sealing zone (PSZ). The latter can be the affected by multiple complications, all of them having a potential gravity and a direct link with the quality of the PSZ. The objective of this study was to analyze the risk factors of the occurrence of complications of the PSZ. METHODS: Between 2007 and 2015, all the patients treated by a thoracic stentgraft in zones 2, 3, or 4 were retrospectively reviewed, with analysis of the pre- and postoperative angio-CT...
December 7, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29217063/capillary-malformations-portwine-stains-of-the-head-and-neck-natural-history-investigations-laser-and-surgical-management
#19
REVIEW
Jeong Woo Lee, Ho Yun Chung
Capillary malformations (CMs), also known as port-wine stains, are the most common type of congenital vascular malformations. Facial CM often occurs with a quasidermatomal distribution according to the sensory trigeminal nerve distribution. With time, these lesions darken progressively, and soft tissue hypertrophy, bony hypertrophy, and/or nodule formation can develop. Multiple treatments for CM have been reported. However, the mainstay and gold standard therapy for facial or aesthetically sensitive CM is still the pulsed dye laser treatment...
February 2018: Otolaryngologic Clinics of North America
https://www.readbyqxmd.com/read/29215442/an-anatomic-morphological-study-of-occipital-spurs-in-human-skulls
#20
Monika Srivastava, Adil Asghar, Nitya Nand Srivastava, Nandkishore Gupta, Anuj Jain, Jayant Verma
Occipital spurs are quite common; however, they are also the source of frequent discomfort to the patients. Their role has been implicated in causation of pain at the base of skull, which may extend to shoulder limiting the movement of the shoulder and neck. The present was carried out to find out the prevalence of occipital spur in human skull and to find out the anatomic morphological characteristics of occipital spur. A total of 30 cadaveric skulls were examined in the Department of Anatomy, Uttar Pradesh University of Medical Sciences, for the presence of occipital spur...
December 6, 2017: Journal of Craniofacial Surgery
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