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Impingement test

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https://www.readbyqxmd.com/read/29761113/differences-in-hip-joint-biomechanics-and-muscle-activation-in-individuals-with-femoroacetabular-impingement-compared-with-healthy-asymptomatic-individuals-is-level-ground-gait-analysis-enough
#1
Derek J Rutherford, Janice Moreside, Ivan Wong
Background: Femoroacetabular impingement (FAI) is a recognized cause of hip and groin pain and a significant factor in hip joint function during sport. Objective tests for understanding hip function are lacking in this population. Purpose: To determine whether biomechanical and electromyographic features of hip function during level-ground walking differ between a group diagnosed with FAI and those with no symptoms of FAI. Study Design: Controlled laboratory study...
May 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29747942/avulsion-fracture-of-the-lesser-trochanter-in-adolescents
#2
Thomas Ruffing, Tilmann Rückauer, Frederic Bludau, Alexander Hofmann, Markus Muhm, Arnold J Suda
INTRODUCTION: Avulsion fractures of the lesser trochanter in adolescents are rare. They are a result of a sudden and forceful contraction of the iliopsoas muscle. Functional results in the medium term after non-operative treatment are unknown. Therefore we aimed to report these in the present study. MATERIALS AND METHODS: A retrospective two-center study was performed in a case series treated between 2011 and 2017. All adolescents with an acute avulsion fracture of the lesser trochanter were included...
May 4, 2018: Injury
https://www.readbyqxmd.com/read/29739301/sub-elite-football-players-with-hip-related-groin-pain-and-positive-flexion-adduction-internal-rotation-test-exhibit-distinct-biomechanical-differences-compared-with-the-asymptomatic-side
#3
Matthew G King, Adam I Semciw, Harvi F Hart, Anthony G Schache, Kane J Middleton, Josh J Heerey, Rintje Agricola, Kay M Crossley
Study Design Observational cross-sectional study. Background Hip-related groin pain is common in sub-elite football players and may be associated with altered hip biomechanics. Objectives To compare the hip biomechanics, bony hip morphology associated with femoroacetabular impingement (FAI) syndrome, and hip strength and range of motion between the symptomatic and asymptomatic limb of sub-elite football players with unilateral hip-related groin pain and a positive flexion adduction internal rotation test. Methods Fifteen sub-elite football (soccer) players with unilateral hip-related groin pain and a positive flexion adduction internal rotation test were recruited...
May 8, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29734501/using-multidimensional-topological-data-analysis-to-identify-traits-of-hip-osteoarthritis
#4
Jasmine Rossi-deVries, Valentina Pedoia, Michael A Samaan, Adam R Ferguson, Richard B Souza, Sharmila Majumdar
BACKGROUND: Osteoarthritis (OA) is a multifaceted disease with many variables affecting diagnosis and progression. Topological data analysis (TDA) is a state-of-the-art big data analytics tool that can combine all variables into multidimensional space. TDA is used to simultaneously analyze imaging and gait analysis techniques. PURPOSE: To identify biochemical and biomechanical biomarkers able to classify different disease progression phenotypes in subjects with and without radiographic signs of hip OA...
May 7, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29733696/mri-assessment-of-supra-and-infratrochanteric-femoral-torsion-association-with-femoroacetabular-impingement-and-hip-dysplasia
#5
Benjamin Fritz, Susanne Bensler, Michael Leunig, Patrick O Zingg, Christian W A Pfirrmann, Reto Sutter
OBJECTIVE: The objective of our study was to evaluate a novel measurement technique for assessing the supra- and infratrochanteric components of femoral torsion, establish reference values in healthy volunteers, and compare supra- and infratrochanteric torsion angles in patients with hip dysplasia and patients with femoroacetabular impingement (FAI) with those in healthy volunteers. MATERIALS AND METHODS: Femoral torsion was assessed in 380 patients and 61 healthy volunteers on MRI...
May 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29730219/prevalence-of-high-grade-cartilage-defects-in-patients-with-borderline-dysplasia-with-femoroacetabular-impingement-a-comparative-cohort-study
#6
Ioanna K Bolia, Karen K Briggs, Renato Locks, Jorge Chahla, Hajime Utsunomiya, Marc J Philippon
PURPOSE: To compare the prevalence, size, and location of Outerbridge grade III and IV cartilage defects on the femoral head and acetabulum between patients with borderline acetabular dysplasia and patients with non-borderline dysplasia who underwent hip arthroscopy for femoroacetabular impingement (FAI). METHODS: Patients aged 18 years or older who underwent primary hip arthroscopy for correction of FAI and labral repair from November 2005 to April 2016 were included...
May 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29727270/pedicle-distraction-increases-intervertebral-and-spinal-canal-area-in-a-cadaver-and-bone-model
#7
Matthew Hughes, Nikolaos Papadakos, Tim Bishop, Jason Bernard
INTRODUCTION: Lumbar spinal stenosis is degenerative narrowing of the spinal canal and/or intervertebral foramen causing compression of the spinal cord and nerve roots. Traditional decompression techniques can often cause significant trauma and vertebral instability. This paper evaluates a method of increasing pedicle length to decompress the spinal and intervertebral foramen, which could be done minimally invasive. METHODS: Three Sawbone (Sawbones Europe, Sweden) and 1 cadaveric lumbar spine underwent bilateral pedicle distraction at L4...
2018: SICOT-J
https://www.readbyqxmd.com/read/29710715/targeting-insulin-for-alzheimer-s-disease-mechanisms-status-and-potential-directions
#8
Jung Hyun Lee, Jordan B Jahrling, Larry Denner, Kelly T Dineley
Insulin resistance can occur when the body is unable to respond to insulin even in excess. In the brain, insulin manages glucose metabolism in regions such as the hippocampus and plays a key role in directly regulating ERK, a kinase required for the type of memory compromised in early Alzheimer's disease (AD). Human imaging studies show that brain glucose utilization declines with age and is notably impaired in subjects with early AD. Likewise, animal models of AD or insulin resistance, or both, demonstrate that dysfunctional insulin signaling and insulin resistance in the brain have reciprocity with neuroinflammation and aberrant accumulation of amyloid-β (Aβ), pathological hallmarks in AD...
April 27, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29701093/the-natural-alpha-angle-of-the-femoral-head-neck-junction
#9
H Gollwitzer, C Suren, C Strüwind, H Gottschling, M Schröder, L Gerdesmeyer, P M Prodinger, R Burgkart
Aims Asphericity of the femoral head-neck junction is common in cam-type femoroacetabular impingement (FAI) and usually quantified using the alpha angle on radiographs or MRI. The aim of this study was to determine the natural alpha angle in a large cohort of patients by continuous circumferential analysis with CT. Methods CT scans of 1312 femurs of 656 patients were analyzed in this cross-sectional study. There were 362 men and 294 women. Their mean age was 61.2 years (18 to 93). All scans had been performed for reasons other than hip disease...
May 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29663425/experimental-investigation-of-linac-angles-and-floor-scatter-dose-contributions-using-cherenkov-imaging-improving-total-skin-electron-therapy-treatment-geometries
#10
Jacqueline M Andreozzi, Petr Brůža, Irwin I Tendler, Karen E Mooney, Lesley A Jarvis, Jochen Cammin, Harold Li, Brian W Pogue, David J Gladstone
PURPOSE: The purpose of this study was to identify the optimal treatment geometry for total skin electron therapy (TSET) using a new optimization metric from Cherenkov image analysis, and to investigate the sensitivity of the Cherenkov imaging method to floor scatter effects in this unique treatment setup. METHODS: Cherenkov imaging using an intensified charge coupled device (ICCD) was employed to measure the relative surface dose distribution as a 2D image in the total skin electron treatment plane...
April 16, 2018: Medical Physics
https://www.readbyqxmd.com/read/29662091/asymmetric-wave-transmission-through-one-dimensional-lattices-with-cubic-quintic-nonlinearity
#11
Muhammad Abdul Wasay
One dimensional lattice with an on-site cubic-quintic nonlinear response described by a cubic-quintic discrete nonlinear Schrödinger equation is tested for asymmetric wave propagation. The lattice is connected to linear side chains. Asymmetry is introduced by breaking the mirror symmetry of the lattice with respect to the center of the nonlinear region. Three cases corresponding to dimer, trimer and quadrimer are discussed with focus on the corresponding diode-like effect. Transmission coefficients are analytically calculated for left and right moving waves via backward transfer map...
April 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29657843/impingement-around-the-hip-beyond-cam-and-pincer
#12
Niels Hendrik Bech, Daniel Haverkamp
In this review, we bring to the attention of the reader three relatively unknown types of hip impingement. We explain the concept of low anterior inferior iliac spine (AIIS) impingement, also known as sub-spine impingement, ischio-femoral impingement (IFI) and pelvi-trochanteric impingement. For each type of impingement, we performed a search of relevant literature.We searched the PubMed, Medline (Ovid) and Embase databases from 1960 to March 2016. For each different type of impingement, a different search strategy was conducted...
February 2018: EFORT open reviews
https://www.readbyqxmd.com/read/29651906/return-to-sport-rates-in-physically-active-individuals-six-months-after-arthroscopy-for-femoroacetabular-impingement-syndrome
#13
Kathryn R Glaws, Thomas J Ellis, Timothy E Hewett, Stephanie L Di Stasi
CONTEXT: Six-months is the expected timeframe to return to sport (RTS) after hip arthroscopy for femoroacetabular impingement syndrome (FAIS). OBJECTIVE: The primary aims of this study were to (1) report the RTS rate of physically active individuals six-months after arthroscopic surgery for FAIS, and (2) compare the self-reported hip function between those who were able to RTS versus those who had not. DESIGN: cohort study. SETTING: XXX...
April 13, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29626593/use-of-microreactors-and-freeze-drying-in-the-manufacturing-process-of-chitosan-coated-pcl-nanoparticles
#14
Tereza Zelenková, Renée Onnainty, Gladys Ester Granero, Antonello A Barresi, Davide Fissore
This paper is focused on the synthesis of chitosan-coated polycaprolactone nanoparticles in microreactors and on the freeze-drying of the nanosuspension, to separate the particles from the liquid phase. Nanoparticles were produced in the confined impinging jets mixer (CIJM) and in the multi-inlet vortex mixer (MIVM), using the solvent displacement method, with acetone or tert-butanol (TBA) as polymer solvent. The study was initially carried out considering a feed flow rate of 80 ml min-1 : using acetone, the mean particle size was lower (163 ± 7 nm) and the Zeta potential was higher (31...
April 4, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29621155/dual-polarization-ku-band-compact-spaceborne-antenna-based-on-dual-reflectarray-optics
#15
Carolina Tienda, Jose A Encinar, Mariano Barba, Manuel Arrebola
This article demonstrated an accurate analysis technique for dual-reflectarray antennas that take into account the angle of incidence of the impinging electric field on the main reflectarray cells. The reflected field on the sub and the main reflectarray surfaces is computed using Method of Moments in the spectral domain and assuming local periodicity. The sub-reflectarray is divided into groups of elements and the field radiated by each group is used to compute the incident and reflected field on the main reflectarray cells...
April 5, 2018: Sensors
https://www.readbyqxmd.com/read/29620579/how-useful-is-the-flexion-adduction-internal-rotation-test-for-diagnosing-femoroacetabular-impingement-a-systematic-review
#16
Ajaykumar Shanmugaraj, Jaymee R Shell, Nolan S Horner, Andrew Duong, Nicole Simunovic, Soshi Uchida, Olufemi R Ayeni
OBJECTIVE: Clinicians use the flexion, adduction, and internal rotation (FADIR) test in the diagnosis of femoroacetabular impingement (FAI). However, the diagnostic utility of this test remains unclear. The purpose of this review was to determine the utility of the FADIR test in diagnosing FAI. DATA SOURCES: MEDLINE, EMBASE, and PubMed were searched using relevant key terms and study screening was performed in duplicate. Patient demographics, diagnostic imaging, and summary measures (eg sensitivity, specificity, etc...
March 28, 2018: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29607761/arthroscopic-surgical-procedures-versus-sham-surgery-for-patients-with-femoroacetabular-impingement-and-or-labral-tears-study-protocol-for-a-randomized-controlled-trial-hiparti-and-a-prospective-cohort-study-harp
#17
May Arna Risberg, Eva Ageberg, Agnethe Nilstad, Bent Lund, Lars Nordsletten, Sverre Løken, Tom Ludvigsen, Signe Kierkegaard, Sasha Carsen, Ioannis Kostogiannis, Kay M Crossley, Sion Glyn-Jones, Joanne L Kemp
Study Design Study protocol for a randomized controlled trial and a prospective cohort. Background The number of arthroscopic surgical procedures for patients with femoroacetabular impingement syndrome (FAIS) has significantly increased worldwide, but high-quality evidence of the effect of such interventions is lacking. Objectives The primary objective will be to determine the efficacy of hip arthroscopic procedures compared to sham surgery on patient-reported outcomes for patients with FAIS (HIP ARThroscopy International [HIPARTI] Study)...
April 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29596338/non-invasive-electromagnetic-skin-patch-sensor-to-measure-intracranial-fluid-volume-shifts
#18
Jacob Griffith, Kim Cluff, Brandon Eckerman, Jessica Aldrich, Ryan Becker, Peer Moore-Jansen, Jeremy Patterson
Elevated intracranial fluid volume can drive intracranial pressure increases, which can potentially result in numerous neurological complications or death. This study's focus was to develop a passive skin patch sensor for the head that would non-invasively measure cranial fluid volume shifts. The sensor consists of a single baseline component configured into a rectangular planar spiral with a self-resonant frequency response when impinged upon by external radio frequency sweeps. Fluid volume changes (10 mL increments) were detected through cranial bone using the sensor on a dry human skull model...
March 29, 2018: Sensors
https://www.readbyqxmd.com/read/29574547/hip-capsular-thickness-correlates-with-range-of-motion-limitations-in-femoroacetabular-impingement
#19
Kailai Zhang, Darren de Sa, Hang Yu, Hema Nalini Choudur, Nicole Simunovic, Olufemi Rolland Ayeni
PURPOSE: Femoroacetabular impingement (FAI) is a clinical entity of the hip causing derangements in range of motion, pain, gait, and function. Computer-assisted modeling and clinical studies suggest that patients with FAI have increased capsular thickness compared to those without.A retrospective chart review was performed to assess relationships between capsular thickness, hip range of motion, and demographic factors in patients with FAI. METHODS: Local Research Ethics Board approval was obtained to extract electronic medical records for 188 patients at a single institution who had undergone hip arthroscopy...
March 24, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29550858/patients-who-are-candidates-for-subacromial-decompression-have-more-pronounced-range-of-motion-deficits-but-do-not-differ-in-self-reported-shoulder-function-strength-or-pain-compared-to-non-candidates
#20
Adam Witten, Mikkel B Clausen, Kristian Thorborg, Mikkel L Attrup, Per Hölmich
PURPOSE: Subacromial impingement syndrome (SIS) is associated with low self-reported shoulder function, impairments in shoulder strength and range of motion (ROM), and pain. It is not known how the symptomatology associated with SIS is reflected in the choice of treatment. This study compares self-reported shoulder function, shoulder strength, ROM, and pain in patients with SIS considered candidates and non-candidates for subacromial decompression (SAD). METHOD: Self-reported shoulder function (Q-DASH and SPADI), maximum isometric muscle strength in shoulder abduction (Abd-strength) and external rotation (ER-strength), active abduction ROM (Abd-ROM) and passive internal rotation ROM (IR-ROM) were measured in a consecutive cohort of patients with SIS referred to an orthopedic outpatient clinic...
March 17, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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