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https://www.readbyqxmd.com/read/27900442/arthroscopic-revision-release-of-gluteal-muscle-contracture-after-failed-primary-open-surgery
#1
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
https://www.readbyqxmd.com/read/27893476/comparison-of-muscle-involvement-and-posture-between-the-conventional-deadlift-and-a-walk-in-style-deadlift-machine
#2
Benjamin J Snyder, Courtney P Cauthen, Scott R Senger
The deadlift exercise is one of the most effective exercises for developing lower-body strength; however, technique errors can lead to low back injuries. The use of a 'walk-in' deadlift machine removes the weight bar by using a lever system with independent handles on either side of the body. Theoretically, this would allow alignment of the load with the center of gravity, encouraging a more upright torso and decreasing the involvement of the low back extensors. This study compared trunk angle, knee angle and electrical activity of key muscles between the conventional deadlift (CDL) and two foot positions (ball of foot or toe alignment) with pronated grip, (called BallPro and ToePro) of a walk-in deadlift machine among high-skilled and low-skilled lifters...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27676874/athletic-injury-prevention-determinants-of-sprint-performance
#3
Pascal Edouard, Pierrick Arnal, Philippe Gimenez, Pierre Samozino, Pedro Jimenez-Reyes, Matt Brughelli, Jurdan Mendiguchia, Jean-Benoit Morin
OBJECTIVE: The hamstring muscles are the most injured muscles in athletes practicing sprints. However, they seem greatly contributing to the production of horizontal force, a key element in the sprint acceleration performance. The aim of our study was to experimentally analyse the link between the production of horizontal force and strength of the hamstrings at maximum sprints on a treadmill and in fatigue conditions. PATIENTS AND METHODS: Fourteen male subjects accustomed to sprint participated in the experiment consisting in 12 6-seconds sprints separated by 44seconds of recovery on an instrumented treadmill sprint for measuring the horizontal force, coupled with the simultaneous recording of the EMG activity of the vastus lateralis, rectus biceps femoris and gluteus muscles...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27666775/muscle-mri-in-duchenne-muscular-dystrophy-evidence-of-a-distinctive-pattern
#4
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)...
November 2016: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/27473653/the-reliability-of-a-maximal-isometric-hip-strength-and-simultaneous-surface-emg-screening-protocol-in-elite-junior-rugby-league-athletes
#5
Paula C Charlton, Benjamin F Mentiplay, Alison Grimaldi, Yong-Hao Pua, Ross A Clark
OBJECTIVES: Firstly to describe the reliability of assessing maximal isometric strength of the hip abductor and adductor musculature using a hand held dynamometry (HHD) protocol with simultaneous wireless surface electromyographic (sEMG) evaluation of the gluteus medius (GM) and adductor longus (AL). Secondly, to describe the correlation between isometric strength recorded with the HHD protocol and a laboratory standard isokinetic device. DESIGN: Reliability and correlational study...
June 23, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27441948/glenohumeral-and-hip-range-of-motion-and-strength-measures-in-youth-baseball-athletes
#6
Kelsey J Picha, Josie L Harding, Kellie C Huxel Bliven
CONTEXT: The repetitive demands of throwing affect glenohumeral (GH) range of motion (ROM) and strength. Less is known about hip alterations in skeletally immature athletes. OBJECTIVE: To compare GH and hip ROM and strength between age, position, and side of youth baseball athletes. DESIGN: Cross-sectional study. SETTING: Multicenter testing. PATIENTS OR OTHER PARTICIPANTS: Seventy-two healthy baseball athletes...
June 2, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27428378/the-outcome-of-hip-exercise-in-patellofemoral-pain-a-systematic-review
#7
REVIEW
Catherine Thomson, Oliver Krouwel, Raija Kuisma, Clair Hebron
: Patellofemoral pain (PFP) is one of the most common lower extremity conditions seen in clinical practice. Current evidence shows that there are hip strength deficits, delayed onset and shorter activation of gluteus medius in people with PFP. The aim of this review was to systematically review the literature to investigate the outcome of hip exercise in people with PFP. METHOD: AMED, CINAHL, Cochrane, EMBASE, PEDro, Pubmed, Science direct and SPORTDiscus databases were searched from inception to November 2014 for RCTs, non-randomised studies and case studies...
December 2016: Manual Therapy
https://www.readbyqxmd.com/read/27340373/strengthening-the-gluteus-medius-using-various-bodyweight-and-resistance-exercises
#8
Petr Stastny, James J Tufano, Artur Golas, Miroslav Petr
THE GLUTEUS MEDIUS (Gmed) IS AN IMPORTANT MUSCLE AND, IF WEAK, CAN CAUSE KNEE, HIP, OR LOWER-BACK PATHOLOGIES. THIS ARTICLE REVIEWS METHODS OF Gmed STRENGTH ASSESSMENT, PROVIDES EXERCISES THAT TARGET THE Gmed BASED ON ELECTROMYOGRAPHY, PRESENTS HOW TO IMPLEMENT Gmed STRENGTHENING IN HEAVY RESISTANCE TRAINING PROGRAMS, AND EXPLAINS THE IMPORTANCE OF INCLUDING THESE EXERCISES IN THESE PROGRAMS.
June 2016: Strength and Conditioning Journal
https://www.readbyqxmd.com/read/27269803/lower-limb-muscle-activation-patterns-during-off-axis-elliptical-compared-with-conventional-gluteal-muscle-strengthening-exercises
#9
Cindy Y Lin, Liang-Ching Tsai, Joel Press, Yupeng Ren, Sun G Chung, Li-Qun Zhang
CONTEXT: Gluteal-muscle strength has been identified as an important component of injury prevention and rehabilitation in several common knee injuries. However, many conventionally prescribed gluteal-strengthening exercises are not performed during dynamic weight-bearing activities, which is when most injuries occur. OBJECTIVES: To compare lower-limb muscle-activation patterns between conventional gluteal-strengthening exercises and off-axis elliptical exercises with motorized foot-plate perturbations designed to activate gluteal muscles during dynamic exercise...
May 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27190461/the-effect-of-hip-joint-muscle-exercise-on-muscle-strength-and-balance-in-the-knee-joint-after-meniscal-injury
#10
Sun Ja Park, Young Mi Kim, Ha Roo Kim
[Purpose] This study aimed to evaluate the effect of hip muscle strengthening on muscle strength and balance in the knee joint after a meniscal injury. [Subjects and Methods] This randomized control study enrolled 24 patients who had undergone arthroscopic treatment after a meniscal injury and began a rehabilitative exercise program 8 weeks after surgery. Subjects were divided into 2 groups of 12 subjects each: gluteus medius resistance exercise group and control group. This study investigated muscle strength and balance in the knee joint flexor, extensor, and abductor during an 8-week period...
April 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27163446/hip-abductor-muscle-volume-in-hip-osteoarthritis-and-matched-controls
#11
A Zacharias, T Pizzari, D J English, T Kapakoulakis, R A Green
OBJECTIVE: Hip abductor muscle strength and function is negatively impacted by the presence of hip osteoarthritis (OA). This study aimed to quantify differences in hip abductor muscle volume, fatty infiltration and strength in a unilateral hip OA population when compared to a control group. Impact of radiographic severity of OA on these variables was also examined. METHODS: Volumes of gluteus maximus (GMax), medius (GMed) minimus (GMin) and tensor fascia lata (TFL) was measured using MRI and muscle volume asymmetry between limbs was calculated...
October 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27139495/exercise-and-load-modification-versus-corticosteroid-injection-versus-wait-and-see-for-persistent-gluteus-medius-minimus-tendinopathy-the-leap-trial-a-protocol-for-a-randomised-clinical-trial
#12
Rebecca Mellor, Alison Grimaldi, Henry Wajswelner, Paul Hodges, J Haxby Abbott, Kim Bennell, Bill Vicenzino
BACKGROUND: Lateral hip pain is common, particularly in females aged 40-60 years. The pain can affect sleep and daily activities, and is frequently recalcitrant. The condition is often diagnosed as trochanteric bursitis, however radiological and surgical studies have revealed that the most common pathology is gluteus medius/minimus tendinopathy. Patients are usually offered three treatment options: (a) corticosteroid injection (CSI), (b) physiotherapy, or (c) reassurance and observation...
April 30, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27134387/the-effect-of-hip-abductor-exercise-on-muscle-strength-and-trunk-stability-after-an-injury-of-the-lower-extremities
#13
Hwang-Bo Kak, Sun-Ja Park, Byun-Joon Park
[Purpose] The gluteus medius, a hip abductor, controls femoral movement and stabilizes the pelvis during lower extremity mobilization. [Subjects] This study enrolled 24 subjects into control and experimental groups. [Methods] This randomized controlled study included patients who underwent arthroscopy after meniscus injury and started a rehabilitative exercise program 8 weeks after surgery. Subjects were divided into the experimental gluteus medius resistance exercise group (n=12) and the control group (n=12)...
March 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27104789/-gluteal-insufficiency-pathogenesis-diagnosis-and-therapy
#14
N Harrasser, I Banke, H Gollwitzer, F Wilken, A Toepfer, R von Eisenhart-Rothe, M Hauschild
INTRODUCTION: Gluteal insufficiency is a common and challenging complaint. New concepts in pathobiomechanics and improved clinical understanding of chronic gluteal dysfunction have unmasked gluteus medius (GMed) tears as an underlying cause of enhanced trochanteric pain syndrome (GTPS). These tears are often missed or misdiagnosed as bursitis, but lead to prolonged chronic peritrochanteric pain. Clinic: The clinical signs are often dull pain on the lateral hip aspect, reduced hip abduction strength with positive Trendelenburg testing and a tendency for the leg to external rotation, as the internal rotation strength is reduced...
April 2016: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/27104207/greater-hip-extension-but-not-hip-abduction-explosive-strength-is-associated-with-lesser-hip-adduction-and-knee-valgus-motion-during-a-single-leg-jump-cut
#15
Baker Cronin, Samuel T Johnson, Eunwook Chang, Christine D Pollard, Marc F Norcross
BACKGROUND: The relationships between hip abductor and extensor strength and frontal plane hip and knee motions that are associated with anterior cruciate ligament injury risk are equivocal. However, previous research on these relationships has evaluated relatively low-level movement tasks and peak torque rather than a time-critical strength measure such as the rate of torque development (RTD). HYPOTHESIS: Females with greater hip abduction and extension RTD would exhibit lesser frontal plane hip and knee motion during a single-leg jump-cutting task...
April 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27104052/comparison-of-trunk-and-lower-extremity-muscle-activity-among-four-stationary-equipment-devices-upright-bike-recumbent-bike-treadmill-and-elliptigo%C3%A2
#16
Lucinda Bouillon, Ryan Baker, Chris Gibson, Andrew Kearney, Tommy Busemeyer
BACKGROUND: Stationary equipment devices are often used to improve fitness. The ElliptiGO® was recently developed that blends the elements of an elliptical trainer and bicycle, allowing reciprocal lower limb pedaling in an upright position. However, it is unknown whether the muscle activity used for the ElliptiGO® is similar to walking or cycling. To date, there is no information comparing muscle activity for exercise on the treadmill, stationary upright and recumbent bikes, and the ElliptiGO®...
April 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27065513/changes-in-ground-reaction-force-during-a-rebound-jump-task-after-hip-strength-training-for-single-sided-ankle-dorsiflexion-restriction
#17
Hitoshi Kondo, Fujiko Someya
[Purpose] Lateral ankle sprains are common injuries suffered while playing sports, and abnormal forward- and inward-directed ground reaction force occurs during a jumping task. However, the influence of hip muscle strength training on jumping performance after ankle injuries has not been fully examined. This study thus examined changes in ground reaction force during a rebound-jump task after training to strengthen hip muscles. [Subjects and Methods] Ten of 30 female high school basketball players were assigned as subjects who showed a difference of 7 or more degrees in dorsiflexion ranges between the bilateral ankles...
January 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27048463/modifiable-factors-associated-with-knee-abduction-during-weight-bearing-activities-a-systematic-review-and-meta-analysis
#18
Anna Cronström, Mark W Creaby, Jenny Nae, Eva Ageberg
BACKGROUND: Increased knee abduction angle during activity is suggested to be a risk factor for sustaining an anterior cruciate ligament (ACL) injury or developing patellofemoral pain syndrome (PFPS). Knowledge of the modifiable mechanisms that are associated with increased knee abduction will aid in the appropriate design of preventive and rehabilitative strategies for these injuries. OBJECTIVE: Our objective was to systematically review modifiable mechanisms contributing to increased knee abduction in healthy people and in individuals with an ACL injury or PFPS...
November 2016: Sports Medicine
https://www.readbyqxmd.com/read/26981714/evidence-of-altered-corticomotor-excitability-following-targeted-activation-of-gluteus-maximus-training-in-healthy-individuals
#19
Beth E Fisher, Anna C Southam, Yi-Ling Kuo, Ya-Yun Lee, Christopher M Powers
It has been proposed that strengthening and skill training of gluteus maximus (GM) may be beneficial in treating various knee injuries. Given the redundancy of the hip musculature and the small representational area of GM in the primary motor cortex (M1), learning to activate this muscle before prescribing strength exercises and modifying movement strategy would appear to be important. This study aimed to determine whether a short-term activation training program targeting the GM results in neuroplastic changes in M1...
April 13, 2016: Neuroreport
https://www.readbyqxmd.com/read/26977550/endoscopic-treatment-of-gluteus-medius-tears-a-review
#20
Frantz R Lerebours, Randy Cohn, Thomas Youm
Greater trochanteric pain syndrome (GTPS) is a term used to describe disorders of the peritrochanteric region. This constellation of conditions includes greater trochanteric bursitis, gluteus medius (GM) tears, and external coxa saltans or snapping hip syndrome. Tears of the abductor mechanism, more specifically gluteus medius tears, have recently gained a considerable amount of interest in the orthopaedic literature. Abductor tears were first described by Bunker and Kagan in the late 1990s. They used the rotator cuff as an analogous structure to describe the pathological process associated with gluteus medius tears...
March 2016: Bulletin of the Hospital for Joint Diseases
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