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https://www.readbyqxmd.com/read/29342058/mri-evaluation-of-repaired-versus-unrepaired-interportal-capsulotomy-in-simultaneous-bilateral-hip-arthroscopy-a-double-blind-randomized-controlled-trial
#1
Colin D Strickland, Matthew J Kraeutler, Matthew J Brick, Tigran Garabekyan, Jason T K Woon, Vivek Chadayammuri, Omer Mei-Dan
BACKGROUND: Techniques used in hip arthroscopy continue to evolve, and controversy surrounds the need for capsular repair following this surgical intervention. The purpose of this study was to evaluate the magnetic resonance imaging (MRI) appearance of the hip capsule in patients with femoroacetabular impingement (FAI) who underwent simultaneous bilateral hip arthroscopy through an interportal capsulotomy with each hip randomized to undergo capsular repair or not undergo such a repair...
January 17, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29339205/agreement-of-musculoskeletal-ultrasound-and-clinical-assessment-of-shoulder-impairment-in-manual-wheelchair-users-with-various-duration-of-spinal-cord-injury
#2
Margaret Finley, David Ebaugh, Thomas Trojian
OBJECTIVE: To determine agreement of musculoskeletal ultrasound (MSK-US) findings of shoulder pathology and related shoulder special test results in individuals with varied duration of manual wheelchair (MWC) use following spinal cord injury (SCI) and determine if shoulder musculoskeletal impairments, per MSK-US and clinical examination, differed in individuals with SCI and varying duration of MWC use. DESIGN: Cross-sectional cohort study SETTING: Laboratory setting PARTICIPANTS: Twenty-three adult volunteers with SCI who used a MWC for community mobility...
January 12, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29337602/defining-the-learning-curve-for-hip-arthroscopy-a-threshold-analysis-of-the-volume-outcomes-relationship
#3
Nabil Mehta, Peter Chamberlin, Robert G Marx, Chisa Hidaka, Yile Ge, Danyal H Nawabi, Stephen Lyman
BACKGROUND: Hip arthroscopy has emerged as a successful option for the treatment of femoroacetabular impingement and related hip disorders, but the procedure is technically challenging. PURPOSE: To define the learning curve through which surgeons become proficient at hip arthroscopy. STUDY DESIGN: Cohort study; level of evidence, 3. METHODS: The authors identified hip arthroscopy procedures performed by surgeons through a New York State database (Statewide Planning and Research Cooperative System) and followed those cases for additional hip surgery (total hip arthroplasty, hip resurfacing, or ipsilateral hip arthroscopy) within 5 years of the original procedure...
January 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29337572/plasmonic-horizon-in-gold-nanosponges
#4
Cynthia Vidal, Dmitry Sivun, Johannes Ziegler, Dong Wang, Peter Schaaf, Calin Hrelescu, Thomas A Klar
An electromagnetic wave impinging on a gold nanosponge coherently excites many electromagnetic hot-spots inside the nanosponge, yielding a polarization dependent scattering spectrum. In contrast, a hole, recombining with an electron, can locally excite plasmonic hot-spots only within a horizon given by the lifetime of localized plasmons and the speed carrying the information that a plasmon has been created. This horizon is about 57 nm, decreasing with increasing size of the nanosponge. Consequently, photoluminescence from large gold nanosponges appears unpolarized...
January 16, 2018: Nano Letters
https://www.readbyqxmd.com/read/29337028/bipolar-pedicled-teres-major-transfer-for-irreparable-subscapularis-tendon-tears-an-anatomic-feasibility-study
#5
Thibault Lafosse, Malo Le Hanneur, Julia Lee, Bassem Elhassan
BACKGROUND: Subscapularis (SSC) tendon tears are a challenging problem because they can significantly alter shoulder mechanics and function. Tendon retraction and advanced fatty degeneration associated with a chronic tear may make it irreparable. Tendon transfers options for such tears are viable, but results in the setting of associated glenohumeral instability are inconsistent. With the potential to recreate the SSC line of pull, the teres major (TM) may be a viable option for transfer...
January 12, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29330669/hip-and-groin-injuries-in-baseball-players
#6
REVIEW
Ryan A Mlynarek, Struan H Coleman
PURPOSE OF REVIEW: To discuss the clinical significance of the most common hip and groin injuries in baseball players, as well as an algorithmic approach to diagnosis and treatment of these injuries. RECENT FINDINGS: (a) Limitations in throwing velocity, pitch control, and bat swing speed may be secondary to decreased mobility and strength within the proximal kinetic chain, which must harness power from the lower extremities and core. (b) Approximately 5.5% of all baseball injuries per year involve the hip/groin and may lead to a significant amount of time spent on the disabled list...
January 12, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29328633/size-induced-segregation-in-the-stepwise-microhydration-of-hydantoin-and-its-role-on-proton-induced-charge-transfer
#7
Florent Calvo, Marie-Christine Bacchus-Montabonel
Recent photochemistry experiments provided evidence for the formation of hydantoin by irradiation of interstellar ice analogues. The significance of these results and the importance of hydantoin in prebiotic chemistry and polypeptide synthesis motivate the present theoretical investigation, in which we analyzed the effects of stepwise hydration on the structures, electronic and thermodynamical properties of microhydrated hydantoin using a variety of computational approaches. We generally find microhydration to proceed around the hydantoin heterocycle until 5 water molecules are reached, at which stage hydration becomes segregated with a water cluster forming aside the heterocycle...
January 12, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29326903/inter-and-intrarater-reliability-of-goniometry-and-hand-held-dynamometry-for-patients-with-subacromial-impingement-syndrome
#8
Georg Fieseler, Kevin G Laudner, Lars Irlenbusch, Henrike Meyer, Stephan Schulze, Karl-Stefan Delank, Souhail Hermassi, Thomas Bartels, René Schwesig
The purpose of this study was to examine the intra- and interrater reliability of measuring shoulder range of motion (ROM) and strength among patients diagnosed with subacromial impingement syndrome (SAIS). Twenty-five patients (14 female patients; mean age, 60.4± 7.84 years) diagnosed with SAIS were assessed to determine the intrarater reliability for glenohumeral ROM. Twenty-five patients (16 female patients; mean age, 60.4± 7.80 years) and 76 asymptomatic volunteers (52 female volunteers; mean age, 29...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29326769/osteoradionecrosis-in-subaxial-cervical-spine-a-rare-and-devastating-complication-a-case-report
#9
M Z Rashid, M H Ariffin, S A Rhani, A Baharudin, K Ibrahim
Osteoradionecrosis, a rare complication of radiation therapy, is a slow progression disease which affects the surrounding structures of spinal components. It essentially weakens the soft tissue and bony configuration and can cause nerve impingement or cord compression. We describe a patient who underwent radiotherapy for thyroid cancer and presented with cervical kyphosis with anterolisthesis of C3/C4 and C4/C5 some 32 years later. We explore the role of anterior and posterior fusion, as well as hyperbaric oxygen therapy in promoting healing...
November 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29326766/dorsal-luno-capitate-impingement-in-a-professional-tennis-player-a-case-report
#10
A Afshar, A Tabrizi
A 30-year old male right handed professional tennis player complained about reduced athletic performance, chronic pain and restricted extension of his right wrist. Lateral radiograph of the right wrist demonstrated an osteophyte projecting from the dorsal lip of the lunate bone. The presence of an osteophyte on the lateral radiograph of the lunate along with the history, clinical examination, intra-operative findings, and post-operative satisfactory result made the diagnosis of dorsal luno-capitate impingement syndrome reasonable...
November 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29323746/the-acetabular-and-spino-pelvic-morphologies-are-different-in-subjects-with-symptomatic-cam-femoro-acetabular-impingement
#11
George Grammatopoulos, Andrew D Speirs, K C Geoffrey Ng, Charles Riviere, Kawan S Rakhra, Mario Lamontagne, Paul E Beaule
Acetabular and spino-pelvic (SP) morphological parameters are important determinants of hip joint dynamics. This prospective study aimed to determine whether acetabular and SP morphological differences exist between hips with and without cam morphology and between symptomatic and asymptomatic hips with cam morphology. A cohort of 67 patients/hips was studied. Hips were either asymptomatic with no cam (Controls, n = 18), symptomatic with cam (n = 26) or asymptomatic with cam (n = 23). CT-based quantitative assessments of femoral, acetabular, pelvic and spino-pelvic parameters were performed...
January 11, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29323291/neurexin-controls-plasticity-of-a-mature-sexually-dimorphic-neuron
#12
Michael P Hart, Oliver Hobert
During development and adulthood, brain plasticity is evident at several levels, from synaptic structure and function to the outgrowth of dendrites and axons. Whether and how sex impinges on neuronal plasticity is poorly understood. Here we show that the sex-shared GABA (γ-aminobutyric acid)-releasing DVB neuron in Caenorhabditis elegans displays experience-dependent and sexually dimorphic morphological plasticity, characterized by the stochastic and dynamic addition of multiple neurites in adult males. These added neurites enable synaptic rewiring of the DVB neuron and instruct a functional switch of the neuron that directly modifies a step of male mating behaviour...
January 10, 2018: Nature
https://www.readbyqxmd.com/read/29319350/biomechanical-evaluation-of-standard-versus-extended-proximal-fixation-olecranon-plates-for-fixation-of-olecranon-fractures
#13
Allison L Boden, Charles A Daly, Poonam P Dalwadi, Stephanie A Boden, William C Hutton, Raghuveer C Muppavarapu, Michael B Gottschalk
BACKGROUND: Small olecranon fractures present a significant challenge for fixation, which has resulted in development of plates with proximal extension. Olecranon-specific plates with proximal extensions are widely thought to offer superior fixation of small proximal fragments but have distinct disadvantages: larger dissection, increased hardware prominence, and the increased possibility of impingement. Previous biomechanical studies of olecranon fracture fixation have compared methods of fracture fixation, but to date there have been no studies defining olecranon plate fixation strength for standard versus extended olecranon plates...
January 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29316582/-burnout-in-intensive-care
#14
Andrej Michalsen, Andreas Hillert, Andreas Schießl, Dominik Hinzmann
Both acute crises and chronically incriminating circumstances in people's lives may lead to their being afflicted by psychological and somatic ailments. "Burnout" has been coined and established as the term for chronic occupational strain. Many professions claim to be extraordinarily affected by burnout, amongst others physicians and nurses, especially those working in anaesthesiology and critical care. Usually assessed with the Maslach Burnout Inventary, the prevalence of moderate or severe burnout in these areas is estimated at about 30 % amongst nurses and about 40 % to 50 % amongst physicians...
January 2018: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29315384/induction-of-stress-signaling-in-vitro-and-suppression-of-gonadotropin-secretion-by-free-fatty-acids-in-female-mouse-gonadotropes
#15
Song Li, Ekaette F Mbong, Denise T John, Tomohiro Terasaka, Danmei Li, Mark A Lawson
An emerging body of evidence supports the concept that the pituitary is a site for integration of multiple physiological and metabolic signals that inform and modulate endocrine pathways. Multiple endocrine mediators of energy balance and adiposity are known to impinge on the neuroendocrine axis regulating reproduction. Observations in humans show that obesity is correlated with decreased gonadotropin secretion, and studies have also suggested that pituitary sensitivity to stimulation by gonadotropin-releasing hormone is decreased in obese individuals...
January 5, 2018: Endocrinology
https://www.readbyqxmd.com/read/29314901/secondary-electrons-as-an-energy-source-for-life
#16
Kamil B Stelmach, Marc Neveu, Trista J Vick-Majors, Rebecca L Mickol, Luoth Chou, Kevin D Webster, Matt Tilley, Federica Zacchei, Cristina Escudero, Claudio L Flores Martinez, Amanda Labrado, Enrique J G Fernández
Life on Earth is found in a wide range of environments as long as the basic requirements of a liquid solvent, a nutrient source, and free energy are met. Previous hypotheses have speculated how extraterrestrial microbial life may function, among them that particle radiation might power living cells indirectly through radiolytic products. On Earth, so-called electrophilic organisms can harness electron flow from an extracellular cathode to build biomolecules. Here, we describe two hypothetical mechanisms, termed "direct electrophy" and "indirect electrophy" or "fluorosynthesis," by which organisms could harness extracellular free electrons to synthesize organic matter, thus expanding the ensemble of potential habitats in which extraterrestrial organisms might be found in the Solar System and beyond...
January 9, 2018: Astrobiology
https://www.readbyqxmd.com/read/29313319/early-experience-with-a-tapered-titanium-porous-plasma-sprayed-stem-with-updated-design
#17
Antonio G Manocchio, Keith R Berend, Michael J Morris, Joanne B Adams, Adolph V Lombardi
INTRODUCTION: The Taperloc® Complete femoral stem (Zimmer Biomet, Warsaw, Indiana) builds on the widespread clinical success of the original Taperloc design used since 1982. Enhancements to the Complete design include a lowered caput-collum-diaphyseal (CCD) angle from 138° to 133° for improved offset, optimized neck taper with polished neck flats to increase range of motion, reduced distal geometry to improve proximal canal fill, and gradual off-loading that is the goal of tapered geometry...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29313270/ultrasound-elastography-based-assessment-of-the-elasticity-of-the-supraspinatus-muscle-in-impingement-syndrome-does-elastography-has-any-diagnostic-value
#18
Adnan Demirel, Murat Baykara, Tuba Tülay Koca, Ejder Berk
Ultrasound elastography (UE) is a new ultrasound-based imaging technique that provides information about elasticity and stiffness of tissues. This cross-sectional study aimed to identify the diagnostic importance of UE in supraspinatus impingement syndrome. Forty-one subjects, aged 38-70 years, were included in the study. UE was used to determine the elasticity of the supraspinatus muscle. The strain ratio was calculated as the evaluation criteria to measure the elasticity of the muscle. High strain ratio indicated low elasticity...
January 8, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29312852/acetabular-cup-version-modelling-and-its-clinical-applying-on-plain-radiograms
#19
Anton Denisov, Stanislav Bilyk, Anton Kovalenko
AIM: To measure the sensitivity and specificity of the cup version assessment by using only anteroposterior hip and pelvis views, evaluate the incidence of inadequate cup version in patients with repeated dislocations after total hip arthroplasty (THA). METHODS: Radiographic retrospective analysis of 2 groups of patients, with follow up of 6-60 mo, after undergoing primary THA. First group of 32 patients (20 female, 12 male) with unilateral THA (32 hips) required early revision arthroplasty for reasons of dislocation...
December 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29311401/hepatic-cyst-compressing-the-right-atrial-and-ventricular-inflow-tract-an-uncommon-cardiac-complication
#20
Maulik Panchal, Ahmed Alansari, Marc Wallack, Ferdinand Visco, Susan Williams, Alexander M Sy
Commonly reported complications of hepatic cysts are spontaneous hemorrhage, rupture into the peritoneal cavity, infection and compression of the biliary tree however cardiac complications are not commonly reported. We are presenting a case of a large liver cyst presenting with right atrial and ventricular inflow tract impingement resulting in cardiac symptoms. A 68 year-old Hispanic female presented with one month of fatigue and shortness of breath after household work and walking less than one block, right upper quadrant pain and weight loss...
December 27, 2017: Annals of Hepatology
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