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https://www.readbyqxmd.com/read/28918438/no-difference-in-outcome-for-open-versus-arthroscopic-rotator-cuff-repair-a-prospective-comparative-trial
#1
Xavier Bayle, Thuy-Trang Pham, Marie Faruch, Aurelie Gobet, Pierre Mansat, Nicolas Bonnevialle
PURPOSE: Arthroscopic techniques tend to become the gold standard in rotator cuff repair. However, little data are reported in the literature regarding the improvement of postoperative outcomes and re-tear rate relative to conventional open surgery. The aim of this study was to compare clinical outcomes and cuff integrity after arthroscopic versus open cuff repair. METHODS: We prospectively assessed clinical outcomes and cuff integrity after an arthroscopic or open rotator cuff repair with a minimum follow-up of 12 months...
September 16, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28916706/the-expression-of-ldh-c-in-the-skeletal-muscle-of-plateau-pika-ochotona-curzoniae-enhances-adaptation-to-a-hypoxic-environment
#2
Zhi F An, Deng B Wei, Lian Wei, Yang Wang, Lin N Wei
The plateau pika (Ochotona curzoniae) is a species of sprint-running alpine animals in the Qinghai-Tibet Plateau, which is a harsh highland hypoxic environment. Ldh-c is expressed in the testis, sperm and somatic tissues of plateau pika. To reveal the role and physiological mechanisms of sperm-specific lactate dehydrogenase (LDH-C4), in plateau pika to adapt to hypoxic environment, an adenoviral line of pMultiRNAi-Ldhc was constructed and injected into the bilateral biceps femoris of the hind legs. The swimming times of the pikas, and the Ldh-c expression levels, total LDH activities and ATP levels in skeletal muscle, were measured after the pikas were raised in the trapped site for 5 days...
September 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28915727/the-protein-and-energy-metabolic-response-of-skeletal-muscle-to-the-low-protein-diets-in-growing-pigs
#3
Yinghui Li, Fengna Li, Yehui Duan, Qiuping Guo, Wenlong Wang, Chaoyue Wen, Xingguo Huang, Yulong Yin
This study was conducted to determine the effect of the low-protein diets on protein and energy metabolism in skeletal muscle, and to elucidate the underlying mechanism. A total of 18 growing pigs (average initial body weight = 36.47 kg) were individually penned and assigned to three treatments, each treatment was fed one of three diets containing either 18%, 15%, or 12% CP. The results showed that reducing dietary CP contents decreased (P < 0.05) the weight of half Longissimus dorsi (LD) muscle and serum concentration of insulin-like growth factor 1 (IGF-1)...
September 15, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28912913/paraneoplastic-dermatomyositis-syndrome-presenting-as-dysphagia
#4
Emmanuel Ofori, Daryl Ramai, Mel Ona, Madhavi Reddy
Dermatomyositis (DM) is a rare autoimmune condition which predominantly affects females in the fifth and sixth decades of life. DM presents acutely or progressively as painless proximal skeletal muscle weakness and can be associated with a heliotropic rash around the eyes, and Gottron's papules on extensor surfaces of the hands. While the pathophysiology of DM is still unclear, abnormal T- and B-cell immune activity has been reported. DM has been associated with malignancy and has been shown to appear before, concurrently with, or after diagnosis of cancer...
August 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28911978/effect-of-12-month-resistance-and-endurance-training-on-quality-quantity-and-function-of-skeletal-muscle-in-older-adults-requiring-long-term-care
#5
Akito Yoshiko, Takashi Kaji, Hiroki Sugiyama, Teruhiko Koike, Yoshiharu Oshida, Hiroshi Akima
Older adults requiring long-term care will experience age-associated deterioration of the quality and quantity of skeletal muscle if no interventions are performed. Long-term training is considered a typical intervention method and is effective for improvement of both muscle quantity and physical function. However, how such training affects muscle quality [i.e., fat-to-muscle ratio as determined by echo intensity (EI)] in older adults requiring long-term care remains unclear. The purpose of this study was to investigate the effects of a 12-month physical training intervention on the quality and quantity of skeletal muscle, physical function, and blood chemistry in older adults requiring long-term care...
September 11, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28910398/body-composition-and-prediction-equations-using-skinfold-thickness-for-body-fat-percentage-in-southern-brazilian-adolescents
#6
Wagner Luis Ripka, Leandra Ulbricht, Pedro Miguel Gewehr
OBJECTIVES: The purpose of this study was to: a) determine the nutritional status of Brazilian adolescents, and; b) present a skinfold thickness model (ST) to estimate body fat developed with Brazilian samples, using dual energy x-ray absorptiometry (DXA) as reference method. METHODS: The main study group was composed of 374 adolescents, and further 42 adolescents for the validation group. Weight, height, waist circumference measurements, and body mass index (BMI) were collected, as well as nine ST-biceps (BI), triceps (TR), chest (CH), axillary (AX) subscapularis (SB), abdominal (AB), suprailiac (SI), medial thigh (TH), calf (CF), and fat percentage (%BF) obtained by DXA...
2017: PloS One
https://www.readbyqxmd.com/read/28901020/the-location-of-projection-neurons-to-the-biceps-brachii-muscle-in-the-telencephalon-of-the-pigeon
#7
J H Park, J H Ahn, S Y Choi, J H Cho, T-K Lee, I H Kim, J-C Lee, J H Choi, I K Hwang, Y J Lee, E Lee, S Park, J Lim, K Seo, M-H Won
Few studies regarding the anatomical distribution of motor neurons innervating muscles of the arm have been demonstrated in avian brains. The purpose of this study was to finely determine the localization of cerebral neurons innervating the biceps brachii muscle in the pigeon. The cholera toxin B subunit (CTB) was employed as a retrograde tracer to determine the location of neurons controlling the biceps brachii muscle in the telencephalon following intramuscular injection in male pigeons (n = 7), which were killed 14 days after intramuscular injection with CTB...
September 12, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28900560/building-a-better-gluteal-bridge-electromyographic-analysis-of-hip-muscle-activity-during-modified-single-leg-bridges
#8
B J Lehecka, Michael Edwards, Ryan Haverkamp, Lani Martin, Kambry Porter, Kailey Thach, Richard J Sack, Nils A Hakansson
BACKGROUND: Gluteal strength plays a role in injury prevention, normal gait patterns, eliminating pain, and enhancing athletic performance. Research shows high gluteal muscle activity during a single-leg bridge compared to other gluteal strengthening exercises; however, prior studies have primarily measured muscle activity with the active lower extremity starting in 90 ° of knee flexion with an extended contralateral knee. This standard position has caused reports of hamstring cramping, which may impede optimal gluteal strengthening...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28899638/subpectoral-biceps-tenodesis-for-treatment-of-isolated-type-ii-slap-lesions-in-a-young-and-active-population
#9
Jonas Pogorzelski, Marilee P Horan, Zaamin B Hussain, Alexander Vap, Erik M Fritz, Peter J Millett
PURPOSE: The purpose of this study was to evaluate outcomes following open subpectoral biceps tenodesis for the treatment of isolated type II SLAP lesions in patients 45 years of age or younger and evaluate the rate of return to sport. METHODS: All patients included in the study were at least 2 years out from open subpectoral biceps tenodesis for treatment of an isolated type II SLAP lesion and were treated between December 2007 and March 2015. All patients older than 45, those who had prior surgery on the index shoulder, and those who had any concomitant reconstructive shoulder procedures were excluded...
September 9, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28898370/association-between-ruptured-distal-biceps-tendon-and-wild-type-transthyretin-cardiac-amyloidosis
#10
Hallie I Geller, Avinainder Singh, Kevin M Alexander, Tara M Mirto, Rodney H Falk
No abstract text is available yet for this article.
September 12, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28895466/lower-limb-muscle-activity-during-table-tennis-strokes
#11
Yann Le Mansec, Sylvain Dorel, François Hug, Marc Jubeau
This study aimed to compare the muscle activity of lower limbs across typical table tennis strokes. Fourteen high-level players participated in this study in which five typical strokes (backhand top, forehand top, forehand spin, forehand smash, flick) were analysed. Surface electromyography activity (EMG) of eight muscles was recorded (gluteus maximus, biceps femoris, vastus medialis, vastus lateralis, rectus femoris, gastrocnemius medialis, gastrocnemius lateralis, soleus) and normalised to the maximal activity measured during squat jump or isometric maximal voluntary contractions...
September 12, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28894922/morphology-and-relationships-of-the-biceps-brachii-and-brachialis-with-the-musculocutaneous-nerve
#12
Masahito Yamamoto, Urara Kojyo, Nobuaki Yanagisawa, Keisuke Mitomo, Takeshi Takayama, Koji Sakiyama, Shinichi Abe
INTRODUCTION: Major anatomical textbooks generally state that the biceps brachii muscle (BB) is composed of long and short heads, whereas the brachialis muscle (BR) consists of a single head. However, the numbers of heads comprising the BB and the BR are very variable. The purpose of this study was to investigate how the branching patterns of the musculocutaneous nerve (MC) influence the number of heads of the BB and the BR. MATERIALS AND METHODS: Morphological examinations of the BB and MC were conducted using cadavers of 22 Japanese individuals, and morphological examinations of the BR and the MC were conducted in 9 of those 22 individuals...
September 11, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28893394/biceps-tenotomy-in-the-presence-of-a-supraspinatus-tear-alters-the-adjacent-intact-tendons-and-glenoid-cartilage
#13
Zakary M Beach, Jennica J Tucker, Stephen J Thomas, Katherine E Reuther, Chancellor F Gray, Chang-Soo Lee, David L Glaser, Louis J Soslowsky
A rotator cuff tear is a common injury in athletes and workers who repeatedly perform overhead movements, and it is not uncommon for this demographic to return to activity shortly after treatment. A biceps tenotomy is often performed in the presence of a rotator cuff tear to help reduce pain and improve joint function. However, the effect of this procedure on the surrounding tissues in the glenohumeral joint is unknown. Therefore, the purpose of this study was to investigate the effect of a biceps tenotomy in the presence of a supraspinatus rotator cuff tear followed by overuse activity on ambulatory function and mechanical and histologic properties of the remaining rotator cuff tendons and glenoid cartilage...
August 26, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28890932/biceps-femoris-injury-a-rarity-a-case-report
#14
Roland Strasser, Thomas Wein, Marc Wieder, Johannes Erhardt, Jörg Kaufmann
Isolated biceps femoris rupture is a rare injury associated with limitation in the function of the knee. We present a 65-year-old man who sustained an isolated complete rupture of the tendon of the biceps femoris. The diagnostic was reached after clinical examination and magnetic resonance imaging of the affected knee. This case was treated with a surgical tendon reconstruction. The outcome was good and the patient was able to walk normally again without limitation, even if he did not comply with our recommendation...
July 2017: Surg J (N Y)
https://www.readbyqxmd.com/read/28888906/the-comparison-of-ground-reaction-forces-and-lower-limb-muscles-correlation-and-activation-time-delay-between-forward-and-backward-walking
#15
Mohammadreza Mahaki, Gustavo Souto De Sá E Souza, Raghad Mimar, Marcus Fraga Vieira
This study aimed to compare the ground reaction forces (GRF) and lower limb muscles correlation and activation time delay between Forward (FW) and Backward (BW) walking. Twenty-four male students participated in this research. Electromyogram activities of gluteus medius, biceps femoris, medial gastrocnemius, soleus and anterior tibialis muscles along with GRFs were measured. Each participant performed two FW and two BW trials bare foot. Statistical parametric mapping (SPM) analysis was performed over anterior-posterior and vertical GRFs time series...
September 6, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28888723/isolated-biceps-reflection-pulley-tears-treated-with-subpectoral-biceps-tenodesis-minimum-2-year-outcomes
#16
Alexander R Vap, J Christoph Katthagen, Dimitri S Tahal, Marilee P Horan, Erik M Fritz, Jonas Pogorzelski, Peter J Millett
PURPOSE: To investigate if patients younger than 50 years old had improved functional outcomes after subpectoral biceps tenodesis (BT) for the treatment of biceps reflection pulley (BRP) lesions at minimum 2-year postoperative follow-up. METHODS: Patients who had arthroscopically confirmed BRP tears that were treated with subpectoral BT and were at least 2 years out from surgery were included; patients were excluded if they had concomitant reconstructive or reparative procedures at index surgery...
September 6, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28886464/muscle-activity-during-backward-and-forward-running-with-body-weight-support
#17
Kenji Masumoto, Michael T Soucy, Joshua P Bailey, John A Mercer
We investigated muscle activity during backward (BR) and forward (FR) running with body weight support (BWS). Ten participants completed BR and FR on a lower body positive pressure treadmill while selecting a preferred speed (PS) for different BWS conditions (0%, 20%, 40%, 60%, and 80%BWS). Muscle activity from the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA), and gastrocnemius (GA), rating of perceived exertion (RPE), preferred stride frequency (PSF), and PS were measured. Magnitude of muscle activity (BF, TA, and GA), RPE, PSF, and PS were not influenced by the interaction of direction and BWS (P>0...
September 5, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28886079/associations-between-lower-limb-muscle-activation-and-knee-flexion-in-post-stroke-individuals-a-study-on-the-stance-to-swing-phases-of-gait
#18
Wei Wang, Ke Li, Shouwei Yue, Cuiping Yin, Na Wei
Reduced knee flexion is a leading feature of post-stroke gait, but the causes have not been well understood. The purpose of this study was to investigate the relationship between the knee flexion and the lower-limb muscle activation within the stance-to-swing phases of gait cycle in the post-stroke hemiplegic patients. Ten stroke patients and 10 age- and gender-matched healthy subjects participated in the experiment. The lower-limb kinematic signals and the surface electromyography (sEMG) signals of the left and right rectus femoris (RF), biceps femoris (BF) and lateral gastrocnemius (GS) were recorded during walking...
2017: PloS One
https://www.readbyqxmd.com/read/28884093/hamstring-injuries-update-article
#19
Lucio Ernlund, Lucas de Almeida Vieira
Hamstring (HS) muscle injuries are the most common injury in sports. They are correlated to long rehabilitations and have a great tendency to recur. The HS consist of the long head of the biceps femoris, semitendinosus, and semimembranosus. The patient's clinical presentation depends on the characteristics of the lesion, which may vary from strain to avulsions of the proximal insertion. The most recognized risk factor is a previous injury. Magnetic resonance imaging is the method of choice for the injury diagnosis and classification...
June 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28882467/muscle-activation-behavior-in-a-swimming-exergame-differences-by-experience-and-gaming-velocity
#20
Pooya Soltani, Pedro Figueiredo, Ricardo J Fernandes, João Paulo Vilas-Boas
The effects of playing intensity and prior exergame and sport experience on the activation patterns of upper limb muscles during a swimming exergame were investigated. Surface electromyography of Biceps Brachii, Triceps Brachii, Latissimus Dorsi, Upper Trapezius, and Erector Spinae of twenty participants was recorded, and the game play was divided into normal and fast. Mean muscle activation, normalized to maximum voluntary isometric contraction (MVIC), ranged from 4.9 to 95.2%MVIC and differed between normal and fast swimming for all techniques (p<0...
September 5, 2017: Physiology & Behavior
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