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https://www.readbyqxmd.com/read/28448708/-wrist-x-ray-for-analysis-of-the-articular-surface-of-distal-radius
#1
E Vergara-Amador, R Penagos, E Pinilla
In the distal radius fracture requires radiographic views that allow you to see the articular surface without interposition. The objective was to determine whether lateral radiographic projections 7 and 22° improve the analysis of this surface. METHOD: Case series study with radiographs of healthy and operated patients, in order to identify the lunate and scaphoid facets in lateral and anteroposterior projections. Qualitative analysis was made on the radiographs of the distal radius with wedges of 7 and 22° in the lateral views and 11° in the anteroposterior view...
September 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28437932/electrifying-catheters-with-light
#2
Martin Pekař, Jeannet van Rens, Martin B van der Mark
Smart minimally invasive devices face a connectivity challenge. An example is found in intracardiac echocardiography where the signal transmission and supply of power at the distal end require many thin and fragile wires in order to keep the catheter slim and flexible. We have built a fully functional bench-top prototype to demonstrate that electrical wires may be replaced by optical fibers. The prototype is immediately scalable to catheter dimensions. The absence of conductors will provide intrinsic galvanic isolation as well as radio frequency (RF) and magnetic resonance imaging (MRI) compatibility...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28399784/treatment-of-distal-radio-ulnar-joint-problems
#3
J Henk Coert
No abstract text is available yet for this article.
May 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28326444/quantitative-radiographic-assessment-of-the-anatomic-attachment-sites-of-the-anterior-and-posterior-complexes-of-the-proximal-tibiofibular-joint
#4
Daniel Cole Marchetti, Jorge Chahla, Gilbert Moatshe, Erik L Slette, Robert F LaPrade
PURPOSE: Quantitative guidelines for radiographic identification of the anterior and posterior ligaments of the proximal tibiofibular joint have not been well defined. The purpose of this study was to provide reproducible, quantitative descriptions of radiographic landmarks identifying the anterior and posterior ligament complexes of the proximal tibiofibular joint. It was hypothesized that consistent quantitative data regarding the radiographic location of the anterior and posterior proximal tibiofibular joint ligament complexes could be identified...
March 21, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28322453/radio-anatomical-analysis-of-the-pericranial-flap-money-box-approach-for-ventral-skull-base-reconstruction
#5
Alfonso Santamaría, Cristóbal Langdon, Mauricio López-Chacon, Arturo Cordero, Joaquim Enseñat, Ricardo Carrau, Manuel Bernal-Sprekelsen, Isam Alobid
OBJECTIVES/HYPOTHESIS: To evaluate the versatility of the pericranial flap (PCF) to reconstruct the ventral skull base, using the frontal sinus as a gate for its passage into the sinonasal corridor "money box approach." STUDY DESIGN: Anatomic-radiological study and case series. METHODS: Various approaches and their respective defects (cribriform, transtuberculum, clival, and craniovertebral junction) were completed in 10 injected specimens...
March 21, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28297059/preoperative-ultrasound-still-valuable-for-radio-cephalic-arteriovenous-fistula-creation
#6
Jernej Pajek, Marko Malovrh
Radio-cephalic arteriovenous fistula is a prototype hemodialysis access with small incidences of infection and distal ischemia, it spares proximal veins for future access use and it helps in the maturation of veins that may be used for more proximal access creations. This access type is prone to higher early failure rates compared to more proximal fistulas and there are unsolved uncertainties regarding exact ultrasound parameters predictive of fistula outcome. Evolution of ultrasound use has yielded several functional parameters that can be measured in addition to anatomical lumen sizes, which remain core parameters on which the decision to construct fistula in radio-cephalic forearm position is based...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28276825/perioperative-chemotherapy-for-resectable-gastric-cancer-what-is-the-evidence
#7
Erling A Bringeland, Hans H Wasmuth, Jon E Grønbech
The UK MAGIC trial published in 2006 was the first RCT to identify improved long-term survival rates using preoperative chemotherapy for resectable gastric or gastroesophageal cancer. Overnight, the treatment regimen impacted European guidelines. However, the majority of patients underwent limited lymph node dissection, and analyses of the rates of curative resection, downsizing and downstaging were not by intention to treat, rightfully raising concerns about their validity. For the subset of true gastric cancers, meta-analyses may even question the claims of improved long-term survival rates by present-day regimens...
June 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28274009/unstable-distal-radius-fractures-treated-by-volar-locking-anatomical-plates
#8
Anto Jose, Shishir Murugharaj Suranigi, Pascal Noel Deniese, Abey Thomas Babu, Kanagasabai Rengasamy, Syed Najimudeen
INTRODUCTION: Fracture of the distal end of radius represents the most common fracture of the upper extremity accounting for 16-20% of all fractures. Plating is now emerging as the gold standard for management of distal radius fractures due to increased rate of complications such as malunion, subluxation/dislocation of distal radio-ulnar joint or late collapse of fracture. Procedures such as closed reduction and cast immobilization, ligamentotaxis with external fixator and percutaneous pin fixation are no longer acceptable...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28268349/characterization-of-thrombus-stiffening-in-radio-frequency-rf-mechanical-thrombectomy
#9
Chris C H Chon, Jack Z Qin, John C K Kwok, David C C Lam
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/28226511/characterization-of-thrombus-stiffening-in-radio-frequency-rf-mechanical-thrombectomy
#10
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
#11
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
#12
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
#13
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
#14
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. Class 2 tears include rupture of both the distal triangular fibrocartilage complex and proximal attachments of the triangular fibrocartilage complex to the fovea...
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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