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https://www.readbyqxmd.com/read/29329890/pain-motion-and-function-comparison-of-two-exercise-protocols-for-the-rotator-cuff-and-scapular-stabilizers-in-patients-with-subacromial-syndrome
#1
Eva Vallés-Carrascosa, Tomás Gallego-Izquierdo, José Jesús Jiménez-Rejano, Gustavo Plaza-Manzano, Daniel Pecos-Martín, Fidel Hita-Contreras, Alexander Achalandabaso Ochoa
STUDY DESIGN: Randomized clinical trial. INTRODUCTION: Eccentric exercise (EE) was shown to be an effective treatment in tendinopathies. However, the evidence of its effectiveness in subacromial syndrome (SS) is scarce. Moreover, consensus has not been reached on whether best results for SS are obtained by means of EE with or without pain. PURPOSE OF THE STUDY: The purpose of this is to compare the effect on pain, active range of motion (AROM), and shoulder function of an exercise protocol performed with pain <40 mm Visual Analog Scale (VAS) and without pain, in patients with SS...
January 9, 2018: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/29327824/are-there-bilateral-isokinetic-shoulder-rotator-differences-in-basketball-male-players
#2
Thierry Weissland, Maryne Cozette, Clare Doyle, Antoine Gabrion
BACKGROUND: The internal (IR) and external (ER) rotator shoulder strength are often assess in the upper limb sports to prevent a risk of injuries. The purpose of this comparative study was to measure the agonist/antagonist balance of shoulder strength and to determine whether significant differences exist between the dominant and nondominant sides in basketball players compared to a control groups. METHODS: During the championship, 23 elite male-basketball players (BB) and 23 healthy males (CG) were tested bilaterally on a Cybex Norm isokinetic dynamometer in a seated position with 45° shoulder abduction in the scapular plane at 60°...
January 10, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29321059/intrarater-reliability-of-the-humac-norm-isokinetic-dynamometer-for-strength-measurements-of-the-knee-and-shoulder-muscles
#3
Bas Habets, J Bart Staal, Marsha Tijssen, Robert van Cingel
OBJECTIVE: To determine the intrarater reliability of the Humac NORM isokinetic dynamometer for concentric and eccentric strength tests of knee and shoulder muscles. RESULTS: 54 participants (50% female, average age 20.9 ± 3.1 years) performed concentric and eccentric strength measures of the knee extensors and flexors, and the shoulder internal and external rotators on two different Humac NORM isokinetic dynamometers, which were situated at two different centers...
January 10, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29300264/femtosecond-laser-assisted-ipsilateral-rotational-lamellar-autokeratoplasty
#4
Myriam Cassagne, Vincent Soler, François Malecaze, Pierre Fournié
PURPOSE: To describe the surgical technique and report the outcomes of 2 patients treated with femtosecond laser-assisted ipsilateral rotational lamellar autokeratoplasty in central corneal scars. METHODS: The corneal scar depth was mapped using preoperative optical coherence tomography. An eccentric lamellar lenticule was cut with a femtosecond laser and rotated to decenter corneal opacity and free the pupil area in 2 patients with nonprogressive central corneal scars...
January 3, 2018: Cornea
https://www.readbyqxmd.com/read/29279023/knobby-eye-syndrome
#5
Joseph L Demer
INTRODUCTION: A spherical globe is traditionally assumed, but this study employed magnetic resonance imaging (MRI) to demonstrate frequent occurrence of non-spherical staphylomata in strabismic patients. METHODS: High-resolution, surface coil MRI was obtained in multiple image planes in 21 highly myopic subjects (36 eyes) and compared with 17 normal controls (33 eyes). Images were analyzed for axial length, aspect ratio of eye shape, and deflection of muscle paths...
December 26, 2017: Strabismus
https://www.readbyqxmd.com/read/29258300/orbital-misalignment-of-the-neptune-mass-exoplanet-gj-436b-with-the-spin-of-its-cool-star
#6
Vincent Bourrier, Christophe Lovis, Hervé Beust, David Ehrenreich, Gregory W Henry, Nicola Astudillo-Defru, Romain Allart, Xavier Bonfils, Damien Ségransan, Xavier Delfosse, Heather M Cegla, Aurélien Wyttenbach, Kevin Heng, Baptiste Lavie, Francesco Pepe
The angle between the spin of a star and the orbital planes of its planets traces the history of the planetary system. Exoplanets orbiting close to cool stars are expected to be on circular, aligned orbits because of strong tidal interactions with the stellar convective envelope. Spin-orbit alignment can be measured when the planet transits its star, but such ground-based spectroscopic measurements are challenging for cool, slowly rotating stars. Here we report the three-dimensional characterization of the trajectory of an exoplanet around an M dwarf star, derived by mapping the spectrum of the stellar photosphere along the chord transited by the planet...
December 18, 2017: Nature
https://www.readbyqxmd.com/read/29234564/shoulder-external-rotator-eccentric-training-versus-general-shoulder-exercise-for-subacromial-pain-syndrome-a-randomized-controlled-trial
#7
Eric J Chaconas, Morey J Kolber, William J Hanney, Matthew L Daugherty, Stanley H Wilson, Charles Sheets
Background: Shoulder pain affects up to 67% of the population at some point in their lifetime with subacromial pain syndrome (SAPS) representing a common etiology. Despite a plethora of studies there remains conflicting evidence for appropriate management of SAPS. Purpose: To compare outcomes, for individuals diagnosed with SAPS, performing a 6-week protocol of eccentric training of the shoulder external rotators (ETER) compared to a general exercise (GE) protocol...
December 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29199523/functional-shoulder-ratios-with-high-velocities-of-shoulder-internal-rotation-are-most-sensitive-to-determine-shoulder-rotation-torque-imbalance-a-cross-sectional-study-with-elite-handball-players-and-controls
#8
Marcelo Peduzzi de Castro, Pedro Fonseca, Sara Tribuzi Morais, Márcio Borgonovo-Santos, Eduardo Filipe Cruz Coelho, Daniel Cury Ribeiro, João Paulo Vilas-Boas
The aim of the present study was to determine which approach to calculating shoulder ratios is the most sensitive for determining shoulder torque imbalance in handball players. Twenty-six participants (handball athletes, n = 13; healthy controls, n = 13) performed isokinetic concentric and eccentric shoulder internal rotation (IR) and external rotation (ER) assessment at 60, 180 and 300°/s. We used eight approaches to calculating shoulder ratios: four concentric (i.e. concentric ER torque divided by concentric IR torque), and four functional (i...
December 4, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/29195400/a-novel-afm-based-5-axis-nanoscale-machine-tool-for-fabrication-of-nanostructures-on-a-micro-ball
#9
Yanquan Geng, Yuzhang Wang, Yongda Yan, Xuesen Zhao
This paper presents a novel atomic force microscopy (AFM)-based 5-axis nanoscale machine tool developed to fabricate nanostructures on different annuli of the micro ball. Different nanostructures can be obtained by combining the scratching trajectory of the AFM tip with the movement of the high precision air-bearing spindle. The center of the micro ball is aligned to be coincided with the gyration center of the high precision to guarantee the machining process during the rotating of the air-bearing spindle...
November 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29163981/a-comparison-of-isometric-isotonic-concentric-and-isotonic-eccentric-exercises-in-the-physiotherapy-management-of-subacromial-pain-syndrome-rotator-cuff-tendinopathy-study-protocol-for-a-pilot-randomised-controlled-trial
#10
Rita Kinsella, Sallie M Cowan, Lyn Watson, Tania Pizzari
Background: Subacromial pain syndrome (SPS) involving rotator cuff tendinopathy is a common cause of shoulder pain and disability. Evidence suggests that structured physiotherapy may be as effective as surgery in this condition with significant improvements demonstrated in trials involving scapular retraining, rotator cuff strengthening and flexibility exercises. Most published programs typically utilise isotonic concentric and/or eccentric strengthening modes. Recently, immediate analgesic effects and muscle strength gains following heavy-load isometric exercises in lower limb tendinopathy conditions have been observed...
2017: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/29145408/effect-of-pulse-pressure-on-borehole-stability-during-shear-swirling-flow-vibration-cementing
#11
Zhihua Cui, Chi Ai, Lei Lv, Fangxian Yin
The shear swirling flow vibration cementing (SSFVC) technique rotates the downhole eccentric cascade by circulating cementing fluid. It makes the casing eccentrically revolve at high speed around the borehole axis. It produces strong agitation action to the annulus fluid, makes it in the state of shear turbulent flow, and results in the formation of pulse pressure which affects the surrounding rock stress. This study was focused on 1) the calculation of the pulse pressure in an annular turbulent flow field based on the finite volume method, and 2) the analysis of the effect of pulse pressure on borehole stability...
2017: PloS One
https://www.readbyqxmd.com/read/29140178/infraspinatus-cross-sectional-area-and-shoulder-range-of-motion-change-following-live-game-baseball-pitching
#12
Brett S Pexa, Eric D Ryan, Elizabeth E Hibberd, Elizabeth Teel, Terri Jo Rucinski, Joseph B Myers
CONTEXT: Following a baseball pitching bout, changes can occur to glenohumeral range of motion that could be linked to injury. These effects are in part due to the posterior shoulder's eccentric muscle activity, which can disrupt muscle contractile elements and lead to changes in muscle cross sectional area (CSA), as measured by ultrasound. OBJECTIVE: To assess changes in muscle CSA, and range of motion immediately before and after pitching, and days 1-5 following pitching...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29091536/scapular-kinematics-by-sex-across-elevation-planes
#13
Bryan R Picco, Meghan E Vidt, Clark R Dickerson
Scapular kinematics are important indicators of dyskinesis, often suggesting underlying shoulder pathology, but the influence of sex is unknown. This study's objective was to examine scapular kinematics in healthy males and females. Positions of surface-mounted reflective markers were tracked during arm elevation movements in 0°/30°/40°/60°/90°/120° planes. Scapulothoracic rotations (protraction/retraction, medial/lateral rotation, posterior/anterior tilt) were calculated. ANOVA analysis evaluated main and interaction effects of sex, plane, phase, elevation angle...
November 1, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29060662/a-novel-3d-printed-mechanical-actuator-using-centrifugal-force-for-magnetic-resonance-elastography
#14
Wiebke Neumann, Lothar R Schad, Frank G Zollner
Magnetic resonance elastography (MRE) is a technique for the quantification of tissue stiffness during MR examinations. It requires consistent methods for mechanical shear wave induction to the region of interest in the human body to reliably quantify elastic properties of soft tissues. This work proposes a novel 3D-printed mechanical actuator using the principle of centrifugal force for wave induction. The driver consists of a 3D-printed turbine vibrator powered by compressed air (located inside the scanner room) and an active driver controlling the pressure of inflowing air (placed outside the scanner room)...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28966325/rotational-atherectomy-followed-by-drug-coated-balloon-dilation-for-left-main-in-stent-restenosis-in-the-setting-of-acute-coronary-syndrome-complicated-with-right-coronary-chronic-total-occlusion
#15
Jun Shiraishi, Keisuke Shoji, Takashi Yanagiuchi, Masaki Yashige, Akira Shikuma, Daisuke Ito, Masayoshi Kimura, Eigo Kishita, Yusuke Nakagawa, Masayuki Hyogo, Takahisa Sawada
An 83-year-old man presented with recurrent acute coronary syndrome (ACS) at the left main coronary artery (LMCA) complicated with ostial chronic total occlusion (CTO) in the right coronary artery (RCA) (RCA-CTO). At the first LMCA-ACS approximately 1 year earlier, he had undergone LMCA-crossover stenting with a biolimus-eluting stent in the presence of RCA-CTO. At the second LMCA-ACS, we angiographically confirmed severe in-stent restenosis in the distal LMCA, in addition to angled severe stenosis in the just proximal LCx, and performed primary PCI for the LMCA bifurcation lesion under intra-aortic balloon pumping support...
October 21, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28958710/active-and-passive-contributions-to-arm-swing-implications-of-the-restriction-of-pelvis-motion-during-human-locomotion
#16
Stephen Canton, Michael J MacLellan
Current research has yet to determine how passive dynamics and active neural control contribute to upper limb swing during human locomotion. The present study aimed to investigate these contributions by restricting pelvis motion during walking, thereby altering the upward energy transfer from the swinging lower limbs. Ten healthy individuals walked freely on a treadmill (CON) and with an apparatus that reduced pelvis motion (PR) at three walking speeds (0.9, 1.3, and 1.8m/s). Spatiotemporal characteristics of limb movement and muscle activation were recorded and analyzed...
September 25, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28958658/a-minimum-ten-years-of-follow-up-of-alumina-head-on-delta-liner-total-hip-arthroplasty
#17
Won-Sik Choy, Yong-Han Cha, Chung-Youb Jeon, Kyu-Sang Lee, Ha-Yong Kim
BACKGROUND: In the early days when delta ceramics were developed, there was a period of using delta ceramic liner and alumina ceramic head. Therefore, the purpose of this study is to investigate the clinical and radiological outcomes of total hip arthroplasty using delta ceramic liner on alumina ceramic head after a minimum of 10 years of follow-up and to evaluate problems of early delta ceramic liner. METHODS: Alumina on delta cementless total hip arthroplasty was performed in 92 hips (85 patients) from August 2005 to March 2007 at our hospital...
September 7, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28952870/effects-of-three-infraspinatus-muscle-strengthening-exercises-on-isokinetic-peak-torque-and-muscle-activity
#18
Il-Young Yu, Dong-Kyu Lee, Myoung-Joo Kang, Jaeseop Oh
CONTEXT: The infraspinatus muscle plays a particularly important role in producing primary external rotation (ER) torque and dynamic stability of the shoulder joint. Previous studies have reported that prone external rotation with horizontal abduction (PER), side-lying wiper exercise (SWE), and standing external rotation (STER) were effective exercises for strengthening the infraspinatus. However, we do not have enough knowledge about changes in muscle strength and dynamic muscle activity in each exercise under dynamic conditions...
September 27, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28933430/a-binary-main-belt-comet
#19
Jessica Agarwal, David Jewitt, Max Mutchler, Harold Weaver, Stephen Larson
Asteroids are primitive Solar System bodies that evolve both collisionally and through disruptions arising from rapid rotation. These processes can lead to the formation of binary asteroids and to the release of dust, both directly and, in some cases, through uncovering frozen volatiles. In a subset of the asteroids called main-belt comets, the sublimation of excavated volatiles causes transient comet-like activity. Torques exerted by sublimation measurably influence the spin rates of active comets and might lead to the splitting of bilobate comet nuclei...
September 20, 2017: Nature
https://www.readbyqxmd.com/read/28920556/the-effects-of-limb-dominance-and-a-short-term-high-intensity-exercise-protocol-on-both-landings-of-the-vertical-drop-jump-implications-for-the-vertical-drop-jump-as-a-screening-tool
#20
Enda F Whyte, Patrick Kennelly, Oliver Milton, Chris Richter, Siobhán O'Connor, Kieran A Moran
The effectiveness of vertical drop jumps (VDJs) to screen for non-contact ACL injuries is unclear. This may be contributed to by discrete point analysis, which does not evaluate patterns of movement. Also, limited research exists on the second landing of VDJs, potential lower limb performance asymmetries and the effect of fatigue. Statistical parametric mapping investigated the main effects of landing, limb dominance and a high intensity, intermittent exercise protocol (HIIP) on VDJ biomechanics. Twenty-two male athletes (21...
September 18, 2017: Sports Biomechanics
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