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https://www.readbyqxmd.com/read/28226511/characterization-of-thrombus-stiffening-in-radio-frequency-rf-mechanical-thrombectomy
#1
Chris C H Chon, Jack Z Qin, John C K Kwok, David C C Lam, Chris C H Chon, Jack Z Qin, John C K Kwok, David C C Lam, David Cc Lam, Chris Ch Chon, John Ck Kwok, Jack Z Qin
Intra-arterial mechanical thrombectomy (IAMT) for ischemic stroke has high recanalization rate, long treatment time window and low risk of symptomatic intracerebral haemorrhage (sICH), but thrombus fragments produced during treatment can lead to distal embolization. Fragmentation can be reduced if the thrombus is strengthened by increasing the thrombus's crosslink density. Radio frequency (rf) electric current commonly used in surgery to cut and coagulate tissue can induce crosslinking in thrombus. The increase in thrombus stiffness as a result of the increase in crosslinking from rf treatment is characterized in this study...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28196431/distal-radio-ulnar-implant-arthroplasty-a-systematic-review
#2
L S Moulton, G E B Giddins
: The use of implant arthroplasty in the hand and wrist is increasing, often with little evidence of outcomes in the literature. We therefore undertook a systematic review of the outcomes of distal radio-ulnar joint arthroplasties following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Papers were assessed for outcomes, implant survival and methodological quality. Fourteen papers assessed ulna head replacements. The implant survival rate was 93% at a mean follow-up of 45 months...
February 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28183230/arthroscopic-assisted-tendon-reconstruction-for-triangular-fibrocartilage-complex-irreparable-tears
#3
R Luchetti, A Atzei
We report our 11-year experience of performing arthroscopically assisted triangular fibrocartilage complex reconstruction in the treatment of chronic distal radio-ulnar joint instability resulting from irreparable triangular fibrocartilage complex injuries. Eleven patients were treated. Three skin incisions were made in order to create radial and ulna tunnels for passage of the tendon graft, which is used to reconstruct the dorsal and palmar radio-ulnar ligaments, under fluoroscopic and arthroscopic guidance...
February 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28164054/a-very-rare-presentation-of-type-1-monteggia-equivalent-fracture-with-ipsilateral-fracture-of-distal-forearm-approach-with-outcome-case-report
#4
Dhananjay Singh, Bhanu Awasthi, Vikas Padha, Sanjay Thakur
INTRODUCTION: We report a case of Type 1 Monteggia equivalent injury with intact radio-capitellar congruity, associated with epiphyseal fracture of distal radius and distal ulna shaft in an 11-year-old boy. There are only a few cases of Monteggia or Monteggia equivalent injury with ipsilateral forearm fractures in children, and injury pattern being reported by us is not only rare but also the only case reported thus far to the best of our knowledge, Sood et al. described Type 1 equivalent with epiphyseal injuries of both radius and ulna Osada et al...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28132592/classification-of-ulnar-triangular-fibrocartilage-complex-tears-a-treatment-algorithm-for-palmer-type-ib-tears
#5
A Atzei, R Luchetti, L Garagnani
: The classical definition of 'Palmer Type IB' triangular fibrocartilage complex tear, includes a spectrum of clinical conditions. This review highlights the clinical and arthroscopic criteria that enable us to categorize five classes on a treatment-oriented classification system of triangular fibrocartilage complex peripheral tears. Class 1 lesions represent isolated tears of the distal triangular fibrocartilage complex without distal radio-ulnar joint instability and are amenable to arthroscopic suture...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28058967/the-value-of-computed-tomography-in-detecting-distal-radio-ulnar-joint-instability-after-a-distal-radius-fracture
#6
R H van Leerdam, M M E Wijffels, M Reijnierse, W Stomp, P Krijnen, I B Schipper
: This study evaluated the value of computed tomography scans for the diagnosis of distal radioulnar joint instability. A total of 46 patients, conservatively treated for a unilateral distal radius fracture, were evaluated. Clinical instability was tested using the stress test and clunk test. A computed tomography scan of both wrists was performed in pronation and supination. Two independent observers reviewed the computed tomography scans using: the radioulnar line, subluxation ratio, epicentre and radioulnar ratio methods...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28048556/tu-h-campus-tep3-03-dose-enhancement-by-gold-nanoparticles-around-the-bragg-peak-of-proton-beams
#7
J Kwon, K Sutherland, T Hashimoto, H Peng, L Xing, H Shirato, H Date
PURPOSE: To make clear the spatial distribution of dose enhancement around gold nanoparticles (GNPs) located near the proton Bragg peak, and to evaluate the potential of GNPs as a radio sensitizer. METHODS: The dose enhancement by electrons emitted from GNPs under proton irradiation was estimated by Geant4 Monte Carlo simulation toolkit in two steps. In an initial macroscopic step, 100 and 195 MeV proton beams were incident on a water cube, 30 cm on a side. Energy distributions of protons were calculated at four depths, 50% and 75% proximal to the Bragg peak, 100% peak, and 75% distal to the peak (P50, P75, Peak, and D75, respectively)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27932401/medium-to-long-term-outcomes-of-anatomical-reconstruction-of-the-radioulnar-ligament-to-the-ulnar-fovea
#8
T Nakamura, K Abe, M Nishiwaki, T Iwamoto, K Sato
: We examined the medium- to long-term outcome of the original reconstruction technique of the radioulnar ligament using a half-slip of the extensor carpi ulnaris tendon for chronic foveal avulsion of the triangular fibrocartilage complex. We treated 37 wrists in 36 patients with a minimum follow-up of 5 years. Of 36 patients, 12 had more than 10 years follow-up. At final follow-up, 30 patients (31 wrists) reported no pain, five patients (five wrists) reported mild occasional pain and one patient reported severe persistent pain...
December 8, 2016: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/27890214/-pathology-of-the-triangular-fibrocartilaginous-complex-in-distal-radius-fractures
#9
D Fontès
Distal radius fracture is actually quite rarely isolated and triangular fibrocartilaginous complex (TFCC) is often involved with the same mechanism of injury. A contemporary management of the treatment of the initial fracture is ideal and so benefits from a routine arthroscopic management. Nevertheless, in the absence of diagnosis and therefore early treatment, the symptoms may be located at the ulnar crossroads and justify specific treatment of TFCC. It is generally conducted after an accurate arthroscopic lesion classification guiding a procedure, depending on the lesion vascularization as well as its possible destabilization potential (debridement, capsular suture or foveal reattachment)...
December 2016: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/27890208/-descriptive-radiographic-topographic-and-functional-anatomy-applied-to-distal-radius-fractures
#10
C Fontaine, R Bry, P Laronde, E Guerre, A Aumar
Extensive anatomical knowledge is needed in order to correctly treat distal radius fractures: normal and pathological osteology of the distal radius, distal radio-ulnar joint and radiocarpal joint-both on the descriptive and functional level-the neurovascular and muscular environments of the distal radius-which are essential to the surgical approaches-and the angles that need to be restored during the reduction. All of these concepts are broached in this article.
December 2016: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/27856939/magnetic-resonance-imaging-investigation-of-radio-lunate-relations-use-in-assessing-distal-radial-fracture-reduction
#11
G Medlock, J M Wohlgemut, I M Stevenson, A J Johnstone
: Reformatted magnetic resonance imaging scans of 27 normal wrists were examined in incremental degrees of rotation around the central axis of the radial shaft to 30° in both directions from true lateral. A line was superimposed on the outer border of the radial dorsal cortex and continued distally to the carpal region. Measurements were made from the superior pole of the lunate to this line. This distance did not change significantly with rotation. This allows a quick and accurate way of assessing distal radial fracture reduction from poorly taken lateral radiographs...
November 16, 2016: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/27852665/sensory-nerve-supply-of-the-distal-radio-ulnar-joint-with-regard-to-wrist-denervation
#12
G M Hohenberger, M J Maier, C Dolcet, A H Weiglein, A Schwarz, V Matzi
The objective of this study was to determine the precise departure points of the articular branches innervating the distal radio-ulnar joint from the anterior and posterior interosseous nerves. The study sample consisted of 116 upper limbs from adult human cadavers. The articular branches were prepared under the dissection microscope to take measurements using the radial styloid process as point of reference. The articular branch departed from the anterior interosseous nerve at a mean distance of 2.9 cm proximal to the styloid for a radius length of 20...
November 15, 2016: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/27806844/myxoid-liposarcoma-of-the-foot-a-study-of-8-cases
#13
Elise M Bekers, Wangzhao Song, Albert J H Suurmeijer, Johannes J Bonenkamp, Ingrid C van der Geest, Petra M Braam, Marieke J M Ploegmakers, Ingrid M E Desar, Bastiaan B J Tops, Joost M van Gorp, David H Creytens, Thomas Mentzel, Uta Flucke
INTRODUCTION: Myxoid liposarcoma is the only translocation-associated liposarcoma subtype. It classically originates in the deep soft tissues of the thigh. At distal sites of the extremities, this tumor is exceedingly rare. We present a series of 8 cases occurring in the foot/ankle. RESULTS: Two female and 6 male patients, aged between 32 and 77 years (mean, 54.3 years), were identified. Tumor size ranged from 1.1 to 10 cm (mean, 6.8 cm). Two lesions eroded bone...
December 2016: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/27806538/epidemiology-of-the-upper-extremity-trauma-in-a-traumatic-center-in-iran
#14
Maryam Ameri, Kamran Aghakhani, Ebrahim Ameri, Shahrokh Mehrpisheh, Azadeh Memarian
INTRODUCTION: Orthopedic injuries are the most common types of traumatic injuries and present as fractures of the limbs, pelvis, and vertebrae or lesions in soft tissues, muscles, ligaments, and tendons. The upper limb fractures occur in distal radius and ulna, metacarpals, fingers, scapula, and carpal bones, Proximal, diaphysis, distal humerus, clavicle, proximal ulna and radio and distal humero and humero, radio, ulna, and metacarpo. The objective of this project was to accurately describe the occurrence of injuries of the upper extremity and the mechanisms of such injuries in a representative sample of Iranian population...
August 10, 2016: Global Journal of Health Science
https://www.readbyqxmd.com/read/27779135/an-end-to-end-assessment-of-range-uncertainty-in-proton-therapy-using-animal-tissues
#15
Yuanshui Zheng, Yixiu Kang, Omar Zeidan, Niek Schreuder
Accurate assessment of range uncertainty is critical in proton therapy. However, there is a lack of data and consensus on how to evaluate the appropriate amount of uncertainty. The purpose of this study is to quantify the range uncertainty in various treatment conditions in proton therapy, using transmission measurements through various animal tissues. Animal tissues, including a pig head, beef steak, and lamb leg, were used in this study. For each tissue, an end-to-end test closely imitating patient treatments was performed...
November 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27735063/the-effect-of-sliding-humeral-osteotomy-sho-on-frontal-plane-thoracic-limb-alignment-an-ex-vivo-canine-cadaveric-study
#16
Adam H Breiteneicher, Bo Norby, Kurt S Schulz, Sharon C Kerwin, Don A Hulse, Derek B Fox, W Brian Saunders
OBJECTIVE: To determine the effect of sliding humeral osteotomy (SHO) on frontal plane thoracic limb alignment in standing and recumbent limb positions. STUDY DESIGN: Canine cadaveric study. SAMPLE POPULATION: Canine thoracic limbs (n=15 limb pairs). METHODS: Limbs acquired from healthy Labrador Retrievers euthanatized for reasons unrelated to this study were mounted in a limb press and aligned in a standing position followed by axial loading at 30% body weight...
November 2016: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/27717996/a-comparison-of-efficacy-of-doxazosin-4-and-8%C3%A2-mg-in-medical-expulsive-therapy-of-distal-ureteral-stones-a-prospective-randomized-clinical-trial
#17
Haluk Sen, Sakip Erturhan, Erkan Sadioglu, Omer Bayrak, İlker Seckiner
We aimed to investigate the efficacy of two different doses of doxazosin, 4 and 8 mg, in medical expulsive therapy (MET). This prospective randomized study included a total of 66 patients with distal ureteral stones which were radio-opaque and ≤10 mm. All patients were randomly divided into three groups: Group 1 included 25 patients receiving 4 mg doxazosin. Group 2 included 22 patients receiving 8 mg doxazosin. Diclofenac 100 mg p.o. and daily 1500-2000 cc hydration were advised to the patients in Groups 1 and 2 to relieve pain...
October 7, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27716829/analysis-of-microstructure-of-the-cardiac-conduction-system-based-on-three-dimensional-confocal-microscopy
#18
Daniel Romero, Oscar Camara, Frank Sachse, Rafael Sebastian
The specialised conducting tissues present in the ventricles are responsible for the fast distribution of the electrical impulse from the atrio-ventricular node to regions in the subendocardial myocardium. Characterisation of anatomical features of the specialised conducting tissues in the ventricles is highly challenging, in particular its most distal section, which is connected to the working myocardium via Purkinje-myocardial junctions. The goal of this work is to characterise the architecture of the distal section of the Purkinje network by differentiating Purkinje cells from surrounding tissue, performing a segmentation of Purkinje fibres at cellular scale, and mathematically describing its morphology and interconnections...
2016: PloS One
https://www.readbyqxmd.com/read/27697137/cancer-of-the-upper-rectum
#19
REVIEW
Peter Bondeven
Rectal cancer constitutes one-third of all colorectal cancers, and the incidence in Denmark increasing. In 2012, 1.400 cases were registered, and of these 38% were located in the upper rectum. There have been several key advances in the optimal management of rectal cancer during the past decades, primarily by standardisation and improvement of the surgical procedure. There is now general agreement that the optimal surgical treatment involves the concept of total mesorectal excision and that a resection with tumour-free margins is crucial...
October 2016: Danish Medical Journal
https://www.readbyqxmd.com/read/27688037/hydrodisplacement-of-sural-nerve-for-safety-and-efficacy-of-endovenous-thermal-ablation-for-small-saphenous-vein-incompetence
#20
Omar Rodriguez-Acevedo, Kristen E Elstner, Kui Martinic, Aaron Zea, Jenny Diaz, Rodrigo T Martins, Fernando Arduini, Alexandra Hodgkinson, Nabeel Ibrahim
BACKGROUND: Endovenous radio frequency ablation for small saphenous vein incompetence by and large appears to be superior and safer than conventional open surgery. Small saphenous vein ablation from approximately mid-calf to the point proximally where the small saphenous vein dives into the popliteal fossa is considered to be safe, as the sural nerve is in most cases separated from this segment of the small saphenous vein by the deep fascia. The outcome of the distal incompetent small saphenous vein remains unclear...
September 29, 2016: Phlebology
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