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Hand anatomy

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https://www.readbyqxmd.com/read/29781108/an-exploratory-study-of-sectra-table-visualization-improves-the-effectiveness-of-emergency-bedside-echocardiography-training
#1
Di Shi, Joseph H Walline, Jihai Liu, Xuezhong Yu, Jun Xu, Priscilla P Song, Huadong Zhu, John M O'Donnell
OBJECTIVES: Echocardiography is an essential tool in emergency medicine, and its training is the most challenging of all types of bedside ultrasound (US) training. This study investigated the effectiveness of the Sectra Table (Sectra AB, Linköping, Sweden), an anatomy visualization and collaboration tool, in improving the quality of echocardiography training for emergency medicine physicians. METHODS: We conducted an exploratory prospective observational study from 2015 to 2017 and enrolled 66 trainees who participated in a 2...
May 21, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29771958/cooperation-of-bmp-and-ihh-signaling-in-interdigital-cell-fate-determination
#2
Arunima Murgai, Sara Altmeyer, Stephanie Wiegand, Przemko Tylzanowski, Sigmar Stricker
The elaborate anatomy of hands and feet is shaped by coordinated formation of digits and regression of the interdigital mesenchyme (IM). A failure of this process causes persistence of interdigital webbing and consequently cutaneous syndactyly. Bone morphogenetic proteins (BMPs) are key inductive factors for interdigital cell death (ICD) in vivo. NOGGIN (NOG) is a major BMP antagonist that can interfere with BMP-induced ICD when applied exogenously, but its in vivo role in this process is unknown. We investigated the physiological role of NOG in ICD and found that Noggin null mice display cutaneous syndactyly and impaired interdigital mesenchyme specification...
2018: PloS One
https://www.readbyqxmd.com/read/29771398/a-cadaveric-study-of-the-mean-distance-of-the-radial-artery-during-the-approach-to-the-first-carpometacarpal-joint
#3
Baris Yildirim, Daniel E Hess, Jesse B Seamon, Matthew L Lyons, A Rashard Dacus
Multiple surgical procedures have been described to treat first carpometacarpal (CMC) arthritis. Although the superiority of one procedure over the others continues to be a controversial topic, they all approach the trapezium and require careful attention to the surrounding structures. One potential complication is injury to the radial artery, which lies in close proximity to the trapezium and is often encountered during surgical approach. Using cadaveric specimens, the authors dissected to identify and isolate the radial artery as it travels in the forearm, wrist, and hand while being careful not to disturb its native course...
May 16, 2018: Orthopedics
https://www.readbyqxmd.com/read/29770770/adjustable-diameter-tips-in-the-pediatric-patient-the-constrained-technique
#4
Brandon C Perry, Eric J Monroe, Giridhar Shivaram
Placement of transjugular intrahepatic portosystemic shunt (TIPS) is necessary in children with portal hypertension complicated by variceal bleeding or ascites. However, placement of adult-sized endografts may be problematic due to the smaller anatomy of pediatric patients. On the other hand, placement of fixed diameter smaller stents have the corresponding problem of not accommodating future growth of the child. We describe a novel method to create an adjustable diameter TIPS as a technical solution to these problems...
May 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29770294/three-dimensional-modelling-and-three-dimensional-printing-in-pediatric-and-congenital-cardiac-surgery
#5
REVIEW
Laszlo Kiraly
Three-dimensional (3D) modelling and printing methods greatly support advances in individualized medicine and surgery. In pediatric and congenital cardiac surgery, personalized imaging and 3D modelling presents with a range of advantages, e.g., better understanding of complex anatomy, interactivity and hands-on approach, possibility for preoperative surgical planning and virtual surgery, ability to assess expected results, and improved communication within the multidisciplinary team and with patients. 3D virtual and printed models often add important new anatomical findings and prompt alternative operative scenarios...
April 2018: Translational Pediatrics
https://www.readbyqxmd.com/read/29761472/cranial-morphology-in-mollisquama-sp-squaliformes-dalatiidae-and-patterns-of-cranial-evolution-in-dalatiid-sharks
#6
John S S Denton, John G Maisey, Mark Grace, Alan Pradel, Michael H Doosey, Henry L Bart, Gavin J P Naylor
Dalatiid sharks are members of a family of predominantly small, midwater meso- and bathypelagic chondrichthyans. The family is notable for both its number of monotypic genera and high morphological disparity. Three of the seven dalatiid genera are known only from holotype specimens (Mollisquama parini) or from only a handful of specimens (Euprotomicroides zantedeschia, Heteroscymnoides marleyi), with the only detailed anatomical work consistent across all taxa being studies of dentition. Here, we present detailed anatomical description of the second-ever specimen of Mollisquama (Mollisquama sp...
May 14, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29761052/asymmetries-in-mother-infant-behaviour-in-barbary-macaques-macaca-sylvanus
#7
Barbara Regaiolli, Caterina Spiezio, William Donald Hopkins
Asymmetries in the maternal behaviour and anatomy might play an important role in the development of primate manual lateralization. In particular, early life asymmetries in mother's and infant's behaviour have been suggested to be associated with the development of the hand preference of the offspring. The aim of this study was to investigate the presence of behavioural asymmetries in different behavioural categories of mother-infant dyads of zoo-living Barbary macaques ( Macaca sylvanus ). The study subjects were 14 Barbary macaques involved in seven mother-infant dyads housed in Parco Natura Viva, Italy...
2018: PeerJ
https://www.readbyqxmd.com/read/29758190/conserved-characteristics-of-ocular-refractive-development-did-the-eye-evolve-once
#8
REVIEW
Jacob G Sivak, Jeremy M Sivak
It has been speculated that the unitary eyes of vertebrates and molluscs, and the compound eyes of insects and crustaceans, evolved separately. On the other hand, the common use of rhodopsin as a photoreceptor molecule, and the conservation of Pax6 as a master control gene for eye development, suggest instead that the eye evolved once. Yet, recently the molecular genetics that had seemed to suggest a definitive answer to this evolutionary point has once again become cloudy. Here we propose an alternative approach to addressing the question of eye evolution through comparative analyses of physiological optics...
May 11, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29757946/role-of-venous-sampling-in-the-diagnosis-of-endocrine-disorders
#9
REVIEW
Ryan W England, Eliza B Geer, Amy R Deipolyi
Venous sampling is the gold standard for localizing abnormal hormone secretion in several endocrine disorders. The most common indication for venous sampling is in the workup of primary aldosteronism, adrenocorticotropic hormone-dependent Cushing's syndrome, and hyperparathyroidism. In experienced hands, venous sampling is safe and accurate. This review discusses the role of venous sampling in the workup of endocrine disease, describing the underlying anatomy and pathophysiology, as an understanding of these concepts is essential for technical and clinical success...
May 14, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29757817/brief-report-of-a-novel-advanced-practice-provider-led-course-for-ultrasound-novices
#10
Christan D Santos, Mariah Q Rose, Amanda D Tomlinson, Diane C McLaughlin
BACKGROUND AND PURPOSE: Formal training for ultrasound use is essential for critical care providers. Despite a national increase in the utilization of advanced practice providers in critical care, ultrasound education is not routinely provided in their training programs. This study describes and evaluates a 1-day advanced care provider (APP)-led course designed to provide fellow APPs with the skills to obtain and evaluate basic ultrasound images. METHODS: A 15-question pretest was administered via anonymous use of a clicker response system...
February 2018: Journal of the American Association of Nurse Practitioners
https://www.readbyqxmd.com/read/29750624/evaluation-of-the-effect-of-different-root-canal-preparation-techniques-in-primary-teeth-using-cbct
#11
Shahid M Shaikh, Mousumi Goswami
OBJECTIVES: The purpose of this in vitro study was to compare and evaluate the cleaning and shaping efficiency of the rotary Ni-Ti, sonic and conventional file systems for root canal preparation in primary teeth under CBCT. STUDY DESIGN: Seventy five maxillary and mandibular first and second primary molars were divided into three groups of 25 teeth each, according to the canal preparation technique: Group I Rotary file system, Group II Sonic file system, Group III Conventional K files...
May 11, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29744824/usefulness-of-personalized-three-dimensional-printed-model-on-the-satisfaction-of-preoperative-education-for-patients-undergoing-robot-assisted-partial-nephrectomy-and-their-families
#12
Jun Teishima, Yukihiro Takayama, Shogo Iwaguro, Tetsutaro Hayashi, Shogo Inoue, Keisuke Hieda, Shunsuke Shinmei, Ryoji Kato, Koji Mita, Akio Matsubara
OBJECTIVE: To clarify the usefulness of a personalized three-dimensional (3D) printed model of the kidney for preoperative education among patients who underwent robot-assisted partial nephrectomy (RAPN). METHODS: Twenty-nine cases of patients who planned to undergo RAPN and 19 of their families participated in this study. A three-dimensional model consisting of the kidney, tumors, ureter, inferior vena cava, and abdominal aorta in each case was generated using a Z Printer 450 based on the findings of preoperative enhanced CT...
May 9, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29734911/three-year-review-of-dorsal-plating-for-complex-intra-articular-fractures-of-the-distal-radius
#13
Michelle Spiteri, Wayne Ng, Jamie Matthews, Dominic Power, Mark Brewster
BACKGROUND: The volar approach is commonly used for plating intra-articular fractures of the distal radius. Despite this, certain fracture configurations are more suitable for dorsal plate fixation. This technique has not gained favour due to the reported high incidence of extensor tendon irritation and attrition ruptures. With the advent of lower profile plates this risk has decreased. METHODS: We report on forty-six cases performed in a tertiary hand centre between January 2011 and May 2014...
June 2018: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29726293/predicting-tendon-tissue-grafting-source-from-the-extensors-of-long-fingers-a-systematic-review-of-cadaveric-studies
#14
Kaissar Yammine
BACKGROUND: The use of tendon tissue for transfer and grafting is a common practice in hand surgery. Many local tendons are usually used, mainly that of the palmaris longus muscle. However, this tendon could be absent in up to 46%. Extra slips of the extensor digitorum communis (EDC) and extra tendons such as the extensor indicis (EI) and the extensor digiti minimi (EDM) could be valuable sources for tendon tissue. METHODS: A systematic review was conducted to quantify the proportion of extra slips in relation to each tendon and extra tendons in relation to each long finger...
May 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29714696/root-canal-preparation-in-3-rooted-maxillary-premolars-through-hand-rotary-and-reciprocating-techniques-a-microcomputed-tomography-evaluation
#15
Daiana Flores Gonçalves Giannastasio, Roberta Kochenborger Scarparo, Júlia Eick Iglesias, Rafael Chies Hartmann, Vânia Fontanella, Renata Dornelles Morgental, Fabiana Vieira Vier-Pelisser
Endodontic management of 3-rooted maxillary premolars is a challenge due to their complex anatomy and narrow root canal walls. This study aimed to evaluate, by microcomputed tomography (μCT), the apical enlargement and centering ability promoted by hand, rotary, and reciprocating instrumentation in 3-rooted maxillary premolars. Eighteen teeth were divided into 3 groups (n = 6) according to the preparation technique: crown-down hand, rotary, and reciprocating instrumentation. Instruments with similar apical diameters were used (25 and 40 mm for buccal and palatal canals, respectively)...
May 2018: General Dentistry
https://www.readbyqxmd.com/read/29709330/does-volumetric-measurement-of-cervical-lymph-nodes-serve-as-an-imaging-biomarker-for-locoregional-recurrence-of-oral-squamous-cell-carcinoma
#16
Ali-Farid Safi, Martin Kauke, Hendrik Jung, Marco Timmer, Jan Borggrefe, Thorsten Persigehl, Hans-Joachim Nickenig, Max Zinser, David Maintz, Matthias Kreppel, Joachim Zöller
In consideration of the 3-R-rule (Refine-Replace-Reduce) as a guideline for promoting ethical use of animals for surgical training, we present a novel training model for microvessel anastomosis. At hand of a rat cadaveric study, we evaluated the surgical anatomy of the common carotid artery (CCA), external jugular vein (EJV) and femoral vessels (FV) which were then used as templates for the present investigation. Anatomical dissection of 30 rat cadavers was performed. Two residents without prior microsurgical experience were included in the study and performed 5 CCA, 5 femoral artery, 5 EJV and 5 femoral vein anastomoses...
April 10, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29708204/through-the-hololens%C3%A2-looking-glass-augmented-reality-for-extremity-reconstruction-surgery-using-3d-vascular-models-with-perforating-vessels
#17
Philip Pratt, Matthew Ives, Graham Lawton, Jonathan Simmons, Nasko Radev, Liana Spyropoulou, Dimitri Amiras
Precision and planning are key to reconstructive surgery. Augmented reality (AR) can bring the information within preoperative computed tomography angiography (CTA) imaging to life, allowing the surgeon to 'see through' the patient's skin and appreciate the underlying anatomy without making a single incision. This work has demonstrated that AR can assist the accurate identification, dissection and execution of vascular pedunculated flaps during reconstructive surgery. Separate volumes of osseous, vascular, skin, soft tissue structures and relevant vascular perforators were delineated from preoperative CTA scans to generate three-dimensional images using two complementary segmentation software packages...
2018: European radiology experimental
https://www.readbyqxmd.com/read/29707563/copd-time-to-improve-its-taxonomy
#18
Bartolomé R Celli, Alvar Agustí
Due to well-conducted epidemiological studies and advances in genetics, molecular biology, translational research, the advent of computed tomography of the lungs and bioinformatics, the diagnosis of chronic obstructive pulmonary disease (COPD) as a single entity caused by susceptibility to cigarette smoke is no longer tenable. Furthermore, the once-accepted concept that COPD results from a rapid and progressive loss of lung function over time is not true for a sizeable proportion of adults with the disease...
January 2018: ERJ Open Research
https://www.readbyqxmd.com/read/29706734/thoracoumbilical-flap-anatomy-technique-and-clinical-applications-in-upper-limb-reconstruction-in-the-era-of-microvascular-surgery
#19
Ravikiran Naalla, Moumita De, Rakesh Dawar, Shashank Chauhan, Maneesh Singhal
Purpose: Microvascular reconstruction is the standard of care for salvage of soft tissue defects in complex upper extremity due to their distinct advantages over the pedicled flaps. However, in the era of microsurgery, pedicled flaps have an acceptable significant role for reconstruction of complex soft tissue defects. The authors aim to demonstrate the versatility of pedicled thoracoumbilical flap (TUF) in selected clinical scenarios. Patients and Methods: Retrospective analysis of patients who underwent TUF for upper limb posttraumatic reconstruction was performed between January 2016 and October 2017...
April 2018: Journal of Hand and Microsurgery
https://www.readbyqxmd.com/read/29706248/a-new-sign-allowing-diagnosis-in-the-pathologies-of-the-extensor-tendons-of-the-hand
#20
A Leti Acciaro, F Pilla, G Colzani, N Corradi
INTRODUCTION: The thorough knowledge of the anatomy of the extensor tendon system of the hand is crucial for clinical examination and detection of tendon injuries. The Juncturae between the EDCII and other extensor tendons presents different incidences, shapes ("r" or "y") and morphologies (Type I, II, III). The EIP does not receive connection. These characteristics may result in variable effects on extensor tendons during active finger movements. The purpose of this study is to investigate and describe a new sign helping diagnosis for injuries or pathologies of EIP and EDC index finger (EDC II), based on a cadaveric dissection and clinical observation...
January 9, 2018: Injury
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