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gluteus medius

Alexandre Terrier, Valérie Parvex, Hannes A Rüdiger
INTRODUCTION: In total hip arthroplasty, cup medialisation with compensatory increase of femoral offset has been proposed to increase the moment arms of abductor muscles. However, this technique is associated with a loss of acetabular bone stock. Previous data indicates that the potential benefit is not constant among patients and is likely related to patient anatomy. METHOD: Therefore, to be able to select patients who would benefit most from this technique, we measured several anatomical parameters of the pelvis and femur in 15 patients; and evaluated correlations between them and the changes of moment arms associated with cup medialisation...
October 8, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Gulcan Harput, Jennifer Sebert Howard, Carl Mattacola
Study Design Cross-sectional, controlled laboratory study. Background Quantification of muscular activation during different phases of functional activities is important to understand activation deficits in individuals who have undergone anterior cruciate ligament reconstruction (ACLR). Objectives To compare activation levels of vastus medialis (VM), medial hamstrings (MH) and gluteus medius (GMed) muscles during the different phases of weight bearing tasks between individuals who had undergone ACLR and healthy controls...
October 12, 2016: Journal of Orthopaedic and Sports Physical Therapy
Hiroshi Nagahisa, Kazutaka Mukai, Hajime Ohmura, Toshiyuki Takahashi, Hirofumi Miyata
Hypoxic training is believed to increase endurance capacity in association with hypoxia inducible factor-1α (HIF-1α), a modulator of vascular endothelial growth factor-A (VEGF-A), and to influence activation of satellite cells (SCs). However, the effect of hypoxic training on SC activation and its relation to angiogenesis has not been thoroughly investigated. Eight Thoroughbred horses were subjected to normoxic (FIO2 = 21%) or hypoxic (FIO2 = 15%) training for 3 days/week (100%  [Formula: see text]) for 4 weeks...
2016: Oxidative Medicine and Cellular Longevity
Daniel J Kaplan, Andrew P Dold, David J Fralinger, Robert J Meislin
Patients with gluteus minimus and medius tears that fail nonoperative management may be indicated for surgical repair; however, structural failure after gluteal tendon repair remains unacceptably high. This is likely related to the limited healing potential of tendinous tissue, which is poorly vascular and heals by formation of fibrocartilaginous scar tissue rather than histologically normal tendon. An emerging option to augment tendon healing is the use of a bioinductive implant that is designed to amplify the host healing response and induce the formation of healthy tendon tissue...
August 2016: Arthroscopy Techniques
Cynthia Gobbi Alves Araújo, Christiane de Souza Guerino Macedo, Daiene Ferreira, Leonardo Shigaki, Rubens A da Silva
: The purpose of this study was to assess the effect of patellar taping on muscle activation of the knee and hip muscles in women with Patellofemoral Pain Syndrome during five proprioceptive exercises. Forty sedentary women with syndrome were randomly allocated in two groups: Patellar Taping (based in McConnell) and Placebo (vertical taping on patella without any stretching of lateral structures of the knee). Volunteers performed five proprioceptive exercises randomly: Swing apparatus, Mini-trampoline, Bosu balance ball, Anteroposterior sway on a rectangular board and Mediolateral sway on a rectangular board...
September 21, 2016: Journal of Electromyography and Kinesiology
Jose Francisco Rodríguez-Vázquez, Yohei Honkura, Yukio Katori, Gen Murakami, Hiroshi Abe
The existence of hard tissue pulleys that act to change the direction of a muscle insertion tendon is well known in the human body. These include (1) the trochlea for the extraocular obliquus superior muscle, (2) the pterygoid hamulus for the tensor veli palatini muscle, (3) the deep sulcus on the plantar aspect of the cuboid bone for the peroneus longus tendon, (4) the lesser sciatic notch for the obturator internus muscle, and (5) the bony trochleariformis process for the tensor tympani muscle tendon. In addition, (6) the stapedius muscle tendon shows a lesser or greater angulation at the pyramidal eminence of the temporal bone...
September 29, 2016: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
Kiran Polavarapu, Mahadevappa Manjunath, Veeramani Preethish-Kumar, Deepha Sekar, Seena Vengalil, PriyaTreesa Thomas, Talakad N Sathyaprabha, Rose Dawn Bharath, Atchayaram Nalini
The purpose of this study was to describe the pattern of muscle involvement using MRI findings and correlate with functional as well as muscle strength measurements. Fifty genetically confirmed DMD children with a mean age of 7.6 ± 2.8 (4-15 years) underwent muscle MRI and qualitative assessment was done for muscle changes using Mercuri staging for fibro-fatty replacement on T1 sequence and Borsato score for myoedema on STIR sequence. Detailed phenotypic characterisation was done with Manual muscle testing (modified MRC grading) and Muscular Dystrophy Functional Rating Scale (MDFRS)...
September 5, 2016: Neuromuscular Disorders: NMD
Jon A Jacobson, Corrie M Yablon, P Troy Henning, Irene S Kazmers, Andrew Urquhart, Brian Hallstrom, Asheesh Bedi, Aishwarya Parameswaran
OBJECTIVES: The purpose of this study was to compare ultrasound-guided percutaneous tendon fenestration to platelet-rich plasma (PRP) injection for treatment of greater trochanteric pain syndrome. METHODS: After Institutional Review Board approval was obtained, patients with symptoms of greater trochanteric pain syndrome and ultrasound findings of gluteal tendinosis or a partial tear (<50% depth) were blinded and treated with ultrasound-guided fenestration or autologous PRP injection of the abnormal tendon...
September 23, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Anna L Hatton, François Hug, Sarah H Chen, Christine Reid, Nicole A Sorensen, Kylie Tucker
Middle-aged adults with painful hip conditions show balance impairments that are consistent with an increased risk of falls. Pathological changes at the hip, accompanied by pain, may accelerate pre-existing age-related balance deficits present in midlife. To consider the influence of pain alone, we investigated the effects of acute experimental hip muscle pain on dynamic single-limb balance in middle-aged adults. Thirty-four healthy adults aged 40-60 years formed two groups (Group-1: n=16; Group-2: n=18). Participants performed four tasks: Reactive Sideways Stepping (ReactSide); Star Excursion Balance Test (SEBT); Step Test; Single-Limb Squat; before and after an injection of hypertonic saline into the right gluteus medius muscle (Group-1) or ∼5min rest (Group-2)...
September 13, 2016: Gait & Posture
Sivan Navot, Leonid Kalichman
Pelvic floor muscle assessment in situations of hip/groin pain in both male and female patients can be a key element in treatment success. We present herein, a 32 year old male professional cyclist, exhibiting right hip and groin pain during cycling and prolonged sitting. The pain commenced after the patient suffered a right hip severe contusion in 2013 causing a tear in the tensor fascia lata and gluteus medius muscle. The patient did not complain of pelvic floor dysfunctions. After receiving several series of conventional physical therapy for the hip/groin pain, the patient experienced partial pain relief and slight improvement of hip range of motion...
July 2016: Journal of Bodywork and Movement Therapies
Jay R Ebert, Peter K Edwards, Daniel P Fick, Gregory C Janes
CONTEXT: Gluteus medius rehabilitation is of critical importance given its role in pelvic and lower limb stability, and the known link between gluteus medius weakness and many lower limb conditions. OBJECTIVE: To systematically review the literature and present an evidence-based graduated series of exercises to progressively load gluteus medius. EVIDENCE ACQUISITION: A systematic literature search was conducted in January 2016 to identify studies reporting gluteus medius muscle activity as a percentage of maximal volitional isometric contraction (%MVIC), during rehabilitation exercises...
August 24, 2016: Journal of Sport Rehabilitation
Renan Lima Monteiro, Joana Hoverter Facchini, Diego Galace de Freitas, Bianca Callegaric, Sílvia Maria Amado João
Pelvic drop exercises are often used to strengthen the gluteus medius muscle with the aim of increasing or prioritizing its recruitment. However, the effect of hip rotation on the performance of the action of the gluteus medius is unknown. The aim of the study was to evaluate the effect of hip rotation on the recruitment of the gluteus medius muscle, tensor fasciae latae and quadratus lumborum. Seventeen healthy subjects performed two sets of four repetitions of pelvic drop exercise in random order with lateral (PDLR), medial (PDMR) and neutral (PDN) rotation of the hip...
August 24, 2016: Journal of Sport Rehabilitation
Jihong Park, W Matt Denning, Jordan D Pitt, Devin Francom, J Ty Hopkins, Matthew K Seeley
CONTEXT: Although knee pain is common, some facets of this pain are unclear. The independent effects (i.e., independent from other knee injury or pathology) of knee pain on neural activation of lower-extremity muscles during landing and jumping have not been observed. OBJECTIVE: To investigate the independent effects of knee pain on lower-extremity muscle (gastrocnemius, vastus medialis, medial hamstrings, gluteus medius, and gluteus maximus) activation amplitude during landing and jumping, performed at two different intensities...
August 24, 2016: Journal of Sport Rehabilitation
Kathryn A Webster, Brian G Pietrosimone, Phillip A Gribble
CONTEXT:  Ankle instability is a common condition in physically active individuals. It often occurs during a jump landing or lateral motion, particularly when participants are fatigued. OBJECTIVE:  To compare muscle activation during a lateral hop prefatigue and postfatigue in individuals with or without chronic ankle instability (CAI). DESIGN:  Cross-sectional study. SETTING:  Sports medicine research laboratory...
September 14, 2016: Journal of Athletic Training
Takao Murohashi, Mitsunori Yoshimoto, Tsuneo Takebayashi, Shuichi Hashimoto, Shouto Yamada, Hiroyuki Takashima, Toshihiko Yamashita
PURPOSE: The measurement of distal motor latency (DML) is an established method for diagnosing entrapment peripheral neuropathy. DML can also serve as an index for disease severity and prognosis. We considered that measuring DML could be useful in estimating the severity of spinal root impairment and predicting prognosis in patients with lumbar spinal stenosis (LSS). The purpose of this study was to investigate the efficacy of intraoperative direct electrical stimulation of the spinal root and the measurement of DML in LSS...
September 9, 2016: European Spine Journal
Rex M Holliday, Vivek Gupta, Prasanna G Vibhute
BACKGROUND: With rising prevalence of obesity, increasing number of gluteal injections would be expected to fail in intramuscular (IM) drug delivery. STUDY QUESTION: This study evaluated ventral gluteal fat thickness (VGT) on adult magnetic resonance imaging of pelvis and correlated it with the subjects' body mass index (BMI), weight, and height to establish evidence-based clinical estimates of individualized needle length and suitability of ventral gluteal site for IM injections...
August 17, 2016: American Journal of Therapeutics
Gyu-Min Kong, Yong-Uk Kwon, Jun-Ho Park
Compartment syndrome is an ischemic change resulting from an increase in compartment pressure. Initially, patients present with direct tenderness and swelling, and the weak circulation secondary to compartment syndrome can eventually lead to motor and sensory impairment. If the increase in pressure results in neurological impairment, emergency intervention is required to decompress the compartment. Typically, compartment syndrome develops on forearms or lower legs. The gluteal compartment is rarely the location of compartment syndrome and only a few cases have been presented in the literature with trauma or hematoma...
December 2015: Hip Pelvis
Sérgio de Almeida Braga, Felipe Gomes Ferreira Padilha, Ana Maria Reis Ferreira
The objective of this study was to determine and confirm the percentage of type I and type II muscle fibers that comprise the Gluteus Medius muscle in male and female canines of the German Shepherd breed, with standardized care, in different age groups, using the enzyme histochemical method. Muscle samples were collected from the Gluteus Medius muscles of forty clinically healthy dogs of the German Shepherd breed using the technique of percutaneous needle muscle biopsy. The samples were evaluated using histological and enzyme histochemical methods...
August 17, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Melinda M Franettovich Smith, Jason Bonacci, M Dilani Mendis, Craig Christie, Andrew Rotstein, Julie A Hides
OBJECTIVES: To investigate if size and activation of the gluteal muscles is a risk factor for hamstring injuries in elite AFL players. DESIGN: Prospective cohort study. METHODS: Twenty-six elite male footballers from a professional Australian Football League (AFL) club participated in the study. At the beginning of the season bilateral gluteus medius (GMED) and gluteus maximus (GMAX) muscle volume was measured from magnetic resonance images and electromyographic recordings of the same muscles were obtained during running...
August 5, 2016: Journal of Science and Medicine in Sport
Richard R Neptune, Craig P McGowan
The regulation of whole-body angular momentum is important for maintaining dynamic balance during human walking, which is particularly challenging in the frontal plane. Whole-body angular momentum is actively regulated by individual muscle forces. Thus, understanding which muscles contribute to frontal plane angular momentum will further our understanding of mediolateral balance control and has the potential to help diagnose and treat balance disorders. The purpose of this study was to identify how individual muscles and gravity contribute to whole-body angular momentum in the frontal plane using a muscle-actuated forward dynamics simulation analysis...
September 6, 2016: Journal of Biomechanics
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