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https://www.readbyqxmd.com/read/28328567/effects-of-a-simulated-game-on-upper-extremity-pitching-mechanics-and-muscle-activations-among-various-pitch-types-in-youth-baseball-pitchers
#1
Gretchen D Oliver, Hillary Plummer, Lisa Henning, Michael Saper, Gabrielle Glimer, Allison Brambeck, James R Andrews
BACKGROUND: Throwing requires proper stability and orientation of the pelvis and scapula for efficient energy transfer during pitching. Fatigue of the pelvis and scapular musculature throughout the course of a game can impair pitching performance, and place excessive demands on the throwing arm leading to injury. The purpose of this study was to examine differences in pelvis, torso, and upper extremity pitching mechanics and muscle activations between the fastball, change-up, and curveball pitches in youth baseball pitchers following a simulated game...
March 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28268355/frequency-of-occurrence-of-myoelectric-patterns-to-evaluate-gait-motor-control-strategies-after-hip-replacement-surgery
#2
Valentina Agostini, Francesco Di Nardo, Sandro Fioretti, Laura Burattini, Samanta Rosati, Gabriella Balestra, Marco Knaflitz
Gait alterations are observed even years after hip replacement surgery. Such long-lasting alterations may arise from a global change of the motor control strategies. The aim of this work is to investigate the changes in gait motor control strategies of patients after hip replacement surgery by analyzing the frequency of occurrence (OF) of myoelectric activation patterns. We studied five lower limb muscles during gait, in hip prosthesis patients and controls. We found that patients adopt a motor control strategy that tends to prefer "simplified" myoelectric patterns, showing a smaller number of activations within the gait cycle...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28255486/osteolysis-of-the-greater-trochanter-caused-by-a-foreign-body-granuloma-associated-with-the-ethibond%C3%A2-suture-after-total-hip-arthroplasty
#3
Keiji Kamo, Hiroaki Kijima, Koichiro Okuyama, Nobutoshi Seki, Shin Yamada, Naohisa Miyakoshi, Yoichi Shimada
The present case shows a case of progression of osteolysis of the greater trochanter caused by a foreign body granuloma associated with the number 5 Ethibond suture in cementless THA with the direct lateral approach that was completely healed by removal of the Ethibond suture. A 55-year-old Japanese woman with secondary osteoarthritis caused by acetabular dysplasia underwent left cementless THA with the direct lateral approach. After setting of the total hip prosthesis, the gluteus medius muscle and vastus lateralis muscle were reattached to the greater trochanter through two bone tunnels using number 5 Ethibond EXCEL sutures...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28226518/frequency-of-occurrence-of-myoelectric-patterns-to-evaluate-gait-motor-control-strategies-after-hip-replacement-surgery
#4
Valentina Agostini, Francesco Di Nardo, Sandro Fioretti, Laura Burattini, Samanta Rosati, Gabriella Balestra, Marco Knaflitz, Valentina Agostini, Francesco Di Nardo, Sandro Fioretti, Laura Burattini, Samanta Rosati, Gabriella Balestra, Marco Knaflitz, Samanta Rosati, Sandro Fioretti, Gabriella Balestra, Valentina Agostini, Laura Burattini, Marco Knaflitz, Francesco Di Nardo
Gait alterations are observed even years after hip replacement surgery. Such long-lasting alterations may arise from a global change of the motor control strategies. The aim of this work is to investigate the changes in gait motor control strategies of patients after hip replacement surgery by analyzing the frequency of occurrence (OF) of myoelectric activation patterns. We studied five lower limb muscles during gait, in hip prosthesis patients and controls. We found that patients adopt a motor control strategy that tends to prefer "simplified" myoelectric patterns, showing a smaller number of activations within the gait cycle...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28210044/effect-of-minimizing-arm-swing-while-walking-on-the-trunk-and-gluteal-muscles
#5
Min-Hee Kim, Won-Gyu Yoo
[Purpose] This study used an alternative approach compared with previous studies by investigating the effect of minimizing arm swing while walking on the trunk and gluteal muscles. [Subjects and Methods] The subjects of this study included 13 adult males. [Results] The latissimus dorsi muscle activities during walking with a minimized arm swing were significantly decreased compared with those during walking with a full arm swing. The gluteus medius muscle activities during walking with a minimized arm swing were significantly increased compared with those during walking with a full arm swing...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28195222/rna-seq-based-detection-of-differentially-expressed-genes-in-the-skeletal-muscle-of-duroc-pigs-with-distinct-lipid-profiles
#6
T F Cardoso, A Cánovas, O Canela-Xandri, R González-Prendes, M Amills, R Quintanilla
We have used a RNA-seq approach to investigate differential expression in the skeletal muscle of swine (N = 52) with divergent lipid profiles i.e. HIGH (increased intramuscular fat and muscle saturated and monounsaturated fatty acid contents, higher serum lipid concentrations and fatness) and LOW pigs (leaner and with an increased muscle polyunsaturated fatty acid content). The number of mRNAs and non-coding RNAs (ncRNAs) expressed in the porcine gluteus medius muscle were 18,104 and 1,558, respectively...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28171786/a-comparison-of-gluteus-medius-gluteus-minimus-and-tensor-facia-latae-muscle-activation-during-gait-in-post-menopausal-women-with-and-without-greater-trochanteric-pain-syndrome
#7
Charlotte Ganderton, Tania Pizzari, Tanya Harle, Jill Cook, Adam Semciw
The effect of greater trochanteric pain syndrome (GTPS) on gluteus medius (GMed) and minimus (GMin) activation in post-menopausal women is unknown. The aim of this study was to compare segmental muscle activation and variability of the GMed, GMin and tensor fascia latae (TFL) during gait in post-menopausal women with and without GTPS. Intramuscular electrodes were inserted into segments of GMin (x2) and GMed (x3) and a surface electrode placed on TFL. Ten control participants and 8 with GTPS completed six walking trials...
January 27, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28165601/bikini-versus-traditional-incision-direct-anterior-approach-is-there-any-difference-in-soft-tissue-damage
#8
Brent A Lanting, Kirk C Hartley, Adam J Raffoul, Timothy A Burkhart, Lyndsay Sommerville, Glynn R Martin, James L Howard, Marjorie Johnson
INTRODUCTION: The direct anterior approach for total hip replacements has reported advantages of improved early function and muscle preservation. In an effort to improve healing and cosmesis, a change in the orientation of the incision has been proposed. Traditionally, the skin incision is in-line with the tensor fasciae latae muscle belly. The bikini incision is orthogonal to this orientation. The hypothesis was that muscle damage would be increased by using the bikini incision. METHODS: A traditional or bikini incision was performed on 18 cadaveric hips...
February 6, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28163789/a-porcine-gluteus-medius-muscle-genome-wide-transcriptome-analysis-dietary-effects-of-omega-6-and-omega-3-fatty-acids-on-biological-mechanisms
#9
Magdalena Ogłuszka, Agnieszka Szostak, Marinus F W Te Pas, Ewa Poławska, Paweł Urbański, Tadeusz Blicharski, Chandra S Pareek, Edyta Juszczuk-Kubiak, Jenelle R Dunkelberger, Jarosław O Horbańczuk, Mariusz Pierzchała
BACKGROUND: The level of omega-6 and omega-3 polyunsaturated fatty acids can affect many cellular systems and function via nuclear receptors or the bioactive lipid regulation of gene expression. The objective of this study was to investigate changes in the muscle transcriptome and the biological functions regulated by increased consumption of omega-3 and omega-6 fatty acids in the pig gluteus medius muscle. RESULTS: The transcriptome of the gluteus medius muscle was studied for pigs subjected to either a control diet or a diet supplemented with linseed and rapeseed oil to increase polyunsaturated fatty acid content...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/28139187/cementless-calcar-replacement-stem-with-integrated-greater-trochanter-plate-for-unstable-intertrochanteric-fracture-in-very-elderly-patients
#10
Keizo Wada, Hiroshi Mikami, Koichi Oba, Hiroshi Yonezu, Koichi Sairyo
PURPOSE: To evaluate the clinical results of rigid fixation of the greater trochanter fragment through a consecutive hemiarthroplasty series using a cementless and modular calcar-replacement prosthesis with an integrated plate (MOD-Centaur stem) with 1-year follow-up in very elderly patients with unstable intertrochanteric fractures. METHODS: We assessed 44 consecutive very elderly patients (age >85 years; 2 men, 42 women; mean age at surgery: 89.6 years) with an unstable intertrochanteric fracture who underwent bipolar hemiarthroplasty using the MOD-Centaur stem by the same surgeon...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28066748/the-use-of-platelet-rich-plasma-to-augment-conservative-and-surgical-treatment-of-hip-and-pelvic-disorders
#11
REVIEW
Matthew J Kraeutler, Tigran Garabekyan, Omer Mei-Dan
BACKGROUND: In recent years, platelet-rich plasma (PRP) has gained popularity within the orthopaedic community as a treatment modality to enhance tissue healing. PURPOSE: This review aims to concisely present the current indications for PRP injections in the treatment of hip and pelvic pathologies and to describe some novel applications for PRP which have not yet been reported in the literature. METHODS: We reviewed the literature on the non-operative and operative indications for PRP in the treatment of hip and pelvic pathologies...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28058477/elastofibroma-of-the-gluteal-region-with-a-concomitant-contralateral-lesion-case-report-and-review-of-the-literature
#12
Luca Cevolani, R Casadei, D Vanel, M Gambarotti, D Donati
A 51-year-old man presented with elastofibroma (EF) of the gluteal region with a concomitant contralateral lesion. The patient presented with a slow growing mass of the proximal third of the right buttock and had swelling, discomfort in sitting, and right-hip pain during walking for 2 months. On MRI, a soft-tissue mass was noted between the gluteus maximus and the gluteus medius muscle. The mass showed similar signal intensity to the surrounding tissue on T1- and T2-weighted images and with linear hyperintense areas in its internal structure...
March 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28054563/joint-qtl-mapping-and-gene-expression-analysis-identify-positional-candidate-genes-influencing-pork-quality-traits
#13
Rayner González-Prendes, Raquel Quintanilla, Angela Cánovas, Arianna Manunza, Tainã Figueiredo Cardoso, Jordi Jordana, José Luis Noguera, Ramona N Pena, Marcel Amills
Meat quality traits have an increasing importance in the pig industry because of their strong impact on consumer acceptance. Herewith, we have combined phenotypic and microarray expression data to map loci with potential effects on five meat quality traits recorded in the longissimus dorsi (LD) and gluteus medius (GM) muscles of 350 Duroc pigs, i.e. pH at 24 hours post-mortem (pH24), electric conductivity (CE) and muscle redness (a*), lightness (L*) and yellowness (b*). We have found significant genome-wide associations for CE of LD on SSC4 (~104 Mb), SSC5 (~15 Mb) and SSC13 (~137 Mb), while several additional regions were significantly associated with meat quality traits at the chromosome-wide level...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28046183/pork-loin-quality-is-not-indicative-of-fresh-belly-or-fresh-and-cured-ham-quality
#14
E K Arkfeld, K B Wilson, M F Overholt, B N Harsh, J E Lowell, E K Hogan, B J Klehm, B M Bohrer, D A Mohrhauser, D A King, T L Wheeler, A C Dilger, S D Shackelford, D D Boler
The objective was to characterize the relationship between fresh loin quality with fresh belly or fresh and cured ham quality. Pigs raised in 8 barns representing 2 seasons [cold ( = 4,290) and hot ( = 3,394)] and 2 production focuses [lean ( = 3,627) and quality ( = 4,057)] were used. Carcass characteristics and other meat quality data were collected on 7,684 carcasses. All of the carcasses were evaluated for HCW, LM depth, tenth rib fat depth, leg (ham primal) weight, instrumental color on the gluteus medius and gluteus profundus of the ham face, and subjective loin quality...
December 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/28039889/sonoanatomy-and-pathology-of-the-posterior-band-of-the-gluteus-medius-tendon
#15
Douglas F Hoffman, Jay Smith
Greater trochanteric pain syndrome is a common clinical entity that most often results from disorders of the gluteus medius tendon. There are two distinct bands of the gluteus medius tendon, and abnormalities may affect the anterior or posterior band in isolation or simultaneously. Although abnormalities of the anterior band are more common, awareness and sonographic detection of posterior band abnormalities is essential to guide treatment in the setting of greater trochanteric pain syndrome.
December 31, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27989968/superior-cluneal-nerve-entrapment-neuropathy-and-gluteus-medius-muscle-pain-their-effect-on-very-old-patients-with-low-back-pain
#16
Rinko Kokubo, Kyongsong Kim, Toyohiko Isu, Daijiro Morimoto, Naotaka Iwamoto, Shiro Kobayashi, Akio Morita
OBJECTIVE: In the very elderly, their general condition and poor compliance with drug regimens can render the treatment of low back pain (LBP) difficult. We report the effectiveness of a less-invasive treatment for intractable LBP from superior cluneal nerve entrapment neuropathy (SCN-EN) and gluteus medius muscle (GMeM) pain. PATIENTS AND METHODS: Between April 2013 and March 2015, we treated 17 consecutive elders with LBP, buttock pain, and leg pain. They were 4 men and 13 women ranging in age from 85 to 91 years (mean 86...
February 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27984498/the-biomechanical-demands-on-the-hip-during-progressive-stepping-tasks
#17
Gillian L Hatfield, Jesse M Charlton, Christopher K Cochrane, Connor Hammond, Chris Napier, Judit Takacs, Natasha M Krowchuk, Michael A Hunt
Functional hip strengthening exercises are important components of lower extremity rehabilitation, and include single leg squats, step-downs, and step-ups. The biomechanical demand of these tasks is unclear. This repeated-measures study determined hip biomechanical demands in a healthy population. Twenty individuals (10 male, 26.6 +/- 5.1 years, 22.1 +/- 2.3 kg/m) participated. Three-dimensional motion, ground reaction force data, and surface electromyograms were recorded during four randomly-ordered tasks...
November 29, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27956818/a-comparison-between-different-modes-of-real-time-sonoelastography-in-visualizing-myofascial-trigger-points-in-low-back-muscles
#18
Mary Kamal Nassif Takla, Naglaa Mohamed Abdel Razek, Omaima Kattabei, Marzouk Abdel Fattah El-Lythy
OBJECTIVE: Currently, there is a lack of objective means to quantify myofascial trigger points (MTrPs) and their core features. Our research compares (1) MTrPs and surrounding myofascial tissue using two-dimensional grayscale ultrasound (2DGSUS) and vibration sonoelastography (VSE); (2) the accuracy of both modes in visualizing MTrPs; (3) 'active' and 'latent' MTrPs, using VSE; and (4) the accuracy of both modes in visualizing deep and superficially located MTrPs. METHODS: Fifty participants with more than two MTrPs in their quadratus lumborum, longissimus thoracis, piriformis, and gluteus medius muscles were assigned to an active MTrP (low back pain) group or a latent (currently pain free) MTrP group...
December 2016: Journal of Manual & Manipulative Therapy
https://www.readbyqxmd.com/read/27943098/incidence-of-greater-trochanteric-pain-syndrome-in-patients-suspected-for-femoroacetabular-impingement-evaluated-using-magnetic-resonance-arthrography-of-the-hip
#19
Grazia Pozzi, Ezio Lanza, Cleber Garcia Parra, Ilaria Merli, Luca Maria Sconfienza, Alberto Zerbi
OBJECTIVES: We evaluated the incidence of greater trochanter pain syndrome (GTPS) in patients who underwent magnetic resonance arthrography (MRA) of the hip for a suspected femoroacetabular impingement (FAI) syndrome. METHODS: Hip MRA performed at our institution (3/2012-1/2014) were reviewed. The absence/presence of FAI (cam, pincer, and mixed) was noted. GTPS diagnosis was based on gluteus medius/minimus tendinopathy/tears, trochanteric bursitis, fascia lata thickening, and trochanter bone oedema/erosion...
March 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/27900442/arthroscopic-revision-release-of-gluteal-muscle-contracture-after-failed-primary-open-surgery
#20
Xintao Zhang, Xiaocheng Jiang, Feilin He, Zuru Liang, Tian You, Dadi Jin, Wentao Zhang
PURPOSE: The treatment of gluteal muscle contracture (GMC) after failed primary open release surgery has rarely been reported in the literature. GMC is a troublesome health problem in some developing countries, and it can result in the limitation of patients' hip function, leading to the development of inferiority complexes. The aim of this study is to evaluate the effect of arthroscopic revision surgery after failed primary open release on patients with GMC. METHODS: A total of 278 hips of 140 patients who underwent arthroscopic revision procedures after failed primary open surgeries were gathered from the department files...
November 29, 2016: International Orthopaedics
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