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https://www.readbyqxmd.com/read/28727652/surgical-emphysema-following-canalplasty-for-aural-exostoses
#1
Michael C Baxter, Matthew Keller, Anil Shah, Sean Wise
OBJECTIVE: To describe the presentation and management of surgical emphysema involving the temporomandibular joint and deep neck following exostoses removal. PATIENT: A 60-year-old male surfer presented with hearing loss and recurrent infections in the right ear. An examination revealed obstructing bony exostoses in the right external auditory canal. He underwent right canalplasty using a postauricular approach. At 5 weeks after surgery, he presented with right otalgia, swelling of the right face and neck, and complaints of a squeaking noise in the right ear with mandibular excursions...
July 19, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28725933/-callus-distraction-and-bone-transport-in-the-treatment-of-bone-defects
#2
REVIEW
R Baumgart, B Schuster, T Baumgart
BACKGROUND: The method of "callus distraction" is the only technique which spontaneously produces vascularized bone within the surrounding soft tissues during lengthening reconstructive procedures. Remodeling of the regenerate bone to specific mechanical load can be influenced by the surgeon. In principle, there is no limit to the amount of new bone formation which can be created; this vascularized bone is both resistant to infection and can be created to replace resected infected bone...
July 19, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28724849/the-ilizarov-mini-external-fixator-for-the-treatment-of-first-metatarsal-fracture-a-case-report
#3
Tatsunori Kataoka, Norie Kodera, Shinro Takai
Forefoot fractures are frequently accompanied by severe soft tissue damage. Therefore, treatment should focus not only on fractures but also on soft tissue damage, for which external fixation can be used as a surgical option. A 63-year-old woman presented to the emergency clinic of our hospital with forefoot pain after a motorcycle accident. Comminuted fracture of the proximal part of the metatarsal was diagnosed. Because of the swollen foot and fracture comminution, an operation using the Ilizarov mini external fixator was performed to prevent further damage to the soft tissue...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28721484/a-comparison-of-external-fixation-and-locked-intramedullary-nailing-in-the-treatment-of-femoral-diaphysis-fractures-from-gunshot-injuries
#4
G Polat, H I Balci, O N Ergin, A Asma, C Şen, Ö Kiliçoğlu
INTRODUCTION: We studied the safety and incidence of complications from the treatment of gunshot-induced femur diaphysis fractures with locked intramedullary nailing in comparison to external fixation. METHODS: Patients who had femoral diaphysis fracture operations due to gunshot injuries (107 femurs of 99 patients) between 2003 and 2014 were retrospectively reviewed, and 66 femurs of 60 patients were place into two groups (Group A: intramedullary nailing-38 femurs of the 36 patients; Group B: external fixator-28 femurs of 24 patients)...
July 18, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28720046/strain-as-a-function-of-time-in-extrinsic-wrist-ligaments-tensioned-through-external-fixation
#5
Joseph P Rectenwald, K Ashley Bentley, Peter M Murray, Subrata Saha
BACKGROUND: The objective of this study is to determine the time-dependent dissipation of extrinsic wrist ligament tension following the application external fixation with axial distraction of the wrist in a cadaveric model. METHODS: Six paired fresh-frozen cadaveric specimens underwent mechanical testing simulating external fixation with 1 arm of each pair osteotomized to simulate a distal radius fracture. The change in tension was then recorded over 24 hours. RESULTS: The rate of stress relaxation decreased with time...
February 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28719943/treatment-with-circular-external-fixation-of-bicondylar-tibial-fractures-potential-in-accurate-reduction-and-efficacy-on-functional-results
#6
Giovanni Lovisetti, Ettore Vulcano, Lorenzo Bettella, Rohoman Tasarib, Tania Tondolo, Francesco Sala
No abstract text is available yet for this article.
July 18, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28717013/mechanisms-of-carbon-dioxide-acquisition-and-co2-sensing-in-marine-diatoms-a-gateway-to-carbon-metabolism
#7
REVIEW
Yusuke Matsuda, Brian M Hopkinson, Kensuke Nakajima, Christopher L Dupont, Yoshinori Tsuji
Diatoms are one of the most successful marine eukaryotic algal groups, responsible for up to 20% of the annual global CO2 fixation. The evolution of a CO2-concentrating mechanism (CCM) allowed diatoms to overcome a number of serious constraints on photosynthesis in the marine environment, particularly low [CO2]aq in seawater relative to concentrations required by the CO2 fixing enzyme, ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO), which is partly due to the slow diffusion rate of CO2 in water and a limited CO2 formation rate from [Formula: see text] in seawater...
September 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28716177/septal-extension-graft-in-closed-revision-rhinoplasty-a-simplified-technique
#8
Alberto Scattolin, Pier-Francesco Galzignato, Fabrizio Longari, Luca D'Ascanio
BACKGROUND: The septal extension graft (SEG) is widely used in secondary rhinoplasty for correction of a short nose with loss of tip support and projection, columellar retraction, and hyper-rotated tip secondary to an overresection of the caudal septum. Although SEG precise fixation can be relatively easy in the external approach, the difficulties of SEG placement in "closed" rhinoplasty can be discouraging. OBJECTIVE: To describe an easy surgical technique for SEG placement in endonasal revision rhinoplasty and to analyze the aesthetic results of the procedure...
July 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28715124/chemical-imaging-of-fresh-vascular-smooth-muscle-cell-response-by-epi-detected-stimulated-raman-scattering
#9
Delong Zhang, Wei Chen, Huan Chen, Han-Qing Yu, Ghassan Kassab, Ji-Xin Cheng
An understanding of deformation of cardiovascular tissue under hemodynamic load is crucial for understanding the health and disease of blood vessels. In the present work, an epi-detected stimulated Raman scattering (epi-SRS) imaging platform was designed for in situ functional imaging of vascular smooth muscle cells (VMSCs) in fresh coronary arteries. For the first time, the pressure-induced morphological deformation of fresh VSMCs was imaged with no fixation and in a label free manner. The relation between the loading pressure and the morphological parameters, including angle and length of the VSMCs, were apparent...
July 17, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28713304/eye-behavior-associated-with-internally-versus-externally-directed-cognition
#10
Mathias Benedek, Robert Stoiser, Sonja Walcher, Christof Körner
What do our eyes do when we are focused on internal representations such as during imagination or planning? Evidence from mind wandering research suggests that spontaneous shifts from externally directed cognition (EDC) to internally directed cognition (IDC) involves oculomotor changes indicative of visual disengagement. In the present study, we investigated potential differences in eye behavior between goal-directed forms of IDC and EDC. To this end, we manipulated the focus of attention (internal versus external) in two demanding cognitive tasks (anagram and sentence generation)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28713234/leftward-deviation-and-asymmetric-speed-of-egocentric-judgment-between-left-and-right-visual-fields
#11
Ying Zhou, Bing Li, Gang Wang, Mingsha Zhang, Yujun Pan
The egocentric reference frame is essential for body orientation and spatial localization of external objects. Recent neuroimaging and lesion studies have revealed that the right hemisphere of humans may play a more dominant role in processing egocentric information than the left hemisphere. However, previous studies of egocentric discrimination mainly focused on assessing the accuracy of egocentric judgment, leaving its timing unexplored. In addition, most previous studies never monitored the subjects' eye position during the experiments, so the influence of eye position on egocentric judgment could not be excluded...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28710670/management-of-proximal-humeral-fractures-by-the-ilizarov-external-fixator
#12
Mohammed Anter Meselhy, Mohamed Salah Singer
INTRODUCTION: External fixation can be performed in poor bone and soft tissue conditions, and can be used in patients with poor general conditions or multiple injuries as a rapid, mini-invasive procedure. The purpose of the current study was to evaluate the effectiveness and safety of the Ilizarov external fixator in the management of proximal humeral fractures. MATERIALS AND METHODS: Between May 2011 and December 2013, 14 patients with displaced proximal humeral fractures were enrolled in the current study...
July 14, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28710405/the-effect-of-oxygen-concentration-and-temperature-on-nitrogenase-activity-in-the-heterocystous-cyanobacterium-fischerella-sp
#13
Lucas J Stal
Heterocysts are differentiated cells formed by some filamentous, diazotrophic (dinitrogen-fixing) cyanobacteria. The heterocyst is the site of dinitrogen fixation providing the oxygen-sensitive nitrogenase with a low-oxygen environment. The diffusion of air into the heterocyst is a compromise between the maximum influx of dinitrogen gas while oxygen is kept sufficiently low to allow nitrogenase activity. This investigation tested the hypothesis that the heterocyst is capable of controlling the influx of air...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28707131/posterior-locked-lateral-compression-injury-of-the-pelvis-in-geriatric-patients-an-infrequent-and-specific-variant-of-the-fragility-fracture-of-pelvis
#14
Se-Won Lee, Weon-Yoo Kim, Sung-Jun Koh, Young-Yul Kim
INTRODUCTION: Posterior locked lateral compression injury (PLLCI) of the pelvic ring is an infrequent variant of lateral compression injury, a condition described in only eight reported cases since 2000. Lateral compression injury usually results from high-energy trauma and is characterized by locking between the medially translated fractured ilium and the anterior border of the sacrum, regardless of whether the fractured ilium involves the sacroiliac joint. However, in our experience, lateral compression injury can also result from low-energy trauma as a manifestation of pelvic fragility fracture...
July 13, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28706824/pectoralis-major-repair-with-unicortical-button-fixation-and-suture-tape
#15
Anthony Sanchez, Marcio B Ferrari, Salvatore J Frangiamore, George Sanchez, Bradley M Kruckeberg, Matthew T Provencher
Although injuries of the pectoralis major muscle are generally uncommon, ruptures of the pectoralis major are occasionally seen in younger, more active patients who participate in weightlifting activities. These injuries usually occur during maximal contraction of the muscle, while in extension and external rotation. In the case of a rupture, operative treatment is advocated especially in young, active patients regardless of the chronicity of the injury. Various surgical techniques for reattachment of the avulsed tendon have been described, but bone tunnel and suture anchor repair techniques are most widely used...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706818/arthroscopic-repair-of-posterior-bony-bankart-lesion-and-subscapularis-remplissage
#16
Colten Luedke, Stefan J Tolan, John M Tokish
Posterior shoulder instability with glenoid bone loss has only a fraction of the prevalence of anterior instability. Unlike the latter, there is a paucity of literature regarding the treatment of posterior bony Bankart lesions and even less with concomitant reverse Hill-Sachs lesions. This combination of pathology leads to a difficult situation regarding treatment options. We present our technique for arthroscopic repair of a posterior bony Bankart lesion and reverse Hill-Sachs lesion. The importance of proper portal placement cannot be overstated...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28702384/prwe-application-in-distal-radius-fracture-comparison-and-correlation-with-established-outcomes
#17
Vinícius Ferreira Paranaíba, João Baptista Gomes Dos Santos, Jorge Raduan Neto, Vinícius Ynoe Moraes, João Carlos Belotti, Flávio Faloppa
OBJECTIVE: The study aimed to evaluate the correlation between the PRWE score with other measurements that are already widely used. METHODS: This was a prospective, cross-sectional, single-center study. Sixty-eight consecutive patients underwent surgical treatment for distal radius fractures (internal fixation by locked volar plate or transarticular external fixation). They were evaluated independently by PRWE, DASH, VAS range of motion, strength, and radiographic criteria, in one year of follow up...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28702088/delayed-recognition-of-an-ipsilateral-femoral-neck-and-shaft-fracture-leading-to-preventable-subsequent-complications-a-case-report
#18
Sönke Labza, Isabella Fassola, Benedict Kunz, Wolfgang Ertel, Senat Krasnici
BACKGROUND: Ipsilateral femoral shaft and neck fractures are rare injuries, affecting mostly young patients who sustained high-energy traumas. In 19-50% of cases, the femoral fracture is misdiagnosed or overlooked at the initial presentation, with reportedly increased risk of complications such as non-union and avascular necrosis. We present a case of an ipsilateral femoral neck and shaft fracture, which was missed at initial presentation despite radiographic and computed tomography (CT) scan evaluation...
2017: Patient Safety in Surgery
https://www.readbyqxmd.com/read/28697074/repair-of-bimalleolar-ankle-fracture
#19
Nina Fisher, Abiola Atanda, Stephanie Swensen, Kenneth A Egol
PURPOSE: The incidence of ankle fractures is rapidly increasing in geriatric populations. Of the 4 fracture patterns described by the Lauge-Hansen classification system, supination-external rotation (SER) accounts for most ankle fractures. This video demonstrates surgical repair of a SER type 4 ankle fracture in a geriatric patient. METHODS: SER type 4 ankle fractures are considered unstable and are generally treated with surgical fixation. After placement of plate and screws, intraoperative stress tests can be used to assess for syndesmotic widening...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28694341/open-reduction-and-internal-fixation-of-humeral-shaft-fractures-versus-conservative-treatment-with-a-functional-brace-a-study-protocol-of-a-randomised-controlled-trial-embedded-in-a-cohort
#20
Lasse Rämö, Simo Taimela, Vesa Lepola, Antti Malmivaara, Tuomas Lähdeoja, Mika Paavola
INTRODUCTION: Humeral shaft fractures represent 1%-3% of all fractures and 20% of humeral fractures in adults. The treatment of these fractures is mainly conservative and operative treatment is usually reserved for specific circumstances. To date, no randomised controlled trial (RCT) has compared operative treatment of humeral shaft fractures with conservative treatment. METHODS AND ANALYSIS: We will conduct an RCT to compare the effectiveness and cost-effectiveness of surgical and conservative treatment of humeral shaft fractures...
July 9, 2017: BMJ Open
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