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https://www.readbyqxmd.com/read/28718946/evidence-for-plical-support-of-the-patella
#1
Robert M Geraghty, Michelle Spear
There is a consensus that there is no overt anterior joint capsule in the knee. However, other anterior structures act in lieu of a joint capsule: the quadriceps tendon and patellar retinacular fibres. In the absence of a capsule, the synovium forms the suprapatellar pouch. Other synovial structures, the plicae, are more controversial. They are often described as embryonic remnants with no function, despite surrounding the patella. We aimed to identify plical anatomy and histology on cadaveric dissection and to examine their embryology using the human virtual embryo website...
July 18, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28718320/oral-prednisolone-for-4-days-does-not-increase-exercise-tolerance-in-men-with-copd
#2
S L Karlsson, V Backer, Nina Skavlan Godtfredsen
One of the primary objectives in management of chronic obstructive pulmonary disease (COPD) is preventing decrease in lung function and reducing the annual number of acute exacerbations of COPD (AECOPD). An oral course of systemic corticosteroids is a commonly used treatment in AECOPD. We hypothesize that this treatment also increases exercise performance and decreases muscle fatigue. In a randomized double-blinded, parallel, placebo-controlled trial, we investigated 14 men (8 on prednisolone 37.5 mg vs. 6 on placebo) with severe and very severe COPD...
January 1, 2017: Chronic Respiratory Disease
https://www.readbyqxmd.com/read/28717665/identification-of-an-alu-element-mediated-deletion-in-the-promoter-region-of-gne-in-siblings-with-gne-myopathy
#3
Jennifer Garland, Joshi Stephen, Bradley Class, Angela Gruber, Carla Ciccone, Aaron Poliak, Christina P Hayes, Vandana Singhal, Christina Slota, John Perreault, Ralitza Gavrilova, Joseph A Shrader, Prashant Chittiboina, Galen Joe, John Heiss, William A Gahl, Marjan Huizing, Nuria Carrillo, May Christine V Malicdan
BACKGROUND: GNE myopathy is a rare genetic disease characterized by progressive muscle atrophy and weakness. It is caused by biallelic mutations in the GNE gene that encodes for the bifunctional enzyme, uridine diphosphate (UDP)-N-acetylglucosamine (GlcNAc) 2-epimerase/N-acetylmannosamine (ManNAc) kinase. Typical characteristics of GNE myopathy include progressive myopathy, first involving anterior tibialis muscle and sparing the quadriceps, and rimmed vacuoles on muscle biopsy. Identifying biallelic mutations by sequencing of the GNE gene confirms the diagnosis of GNE myopathy...
July 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/28717620/the-influence-of-muscle-tendon-forces-on-acl-loading-during-jump-landing-a-systematic-review
#4
REVIEW
Katja Oberhofer, S H Hosseini Nasab, Pascal Schütz, Barbara Postolka, Jess G Snedeker, William R Taylor, Renate List
BACKGROUND: The goal of this review is to summarise and discuss the reported influence of muscle-tendon forces on anterior cruciate ligament (ACL) loading during the jump-landing task by means of biomechanical analyses of the healthy knee. METHODS: A systematic review of the literature was conducted using different combinations of the terms "knee", "ligament", "load", "tension ", "length", "strain", "elongation" and "lengthening". 26 original articles (n=16 in vitro studies; n=10 in situ studies) were identified which complied with all inclusion/exclusion criteria...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28716692/the-fatigue-of-a-full-body-resistance-exercise-session-in-trained-men
#5
Paul W M Marshall, Rebecca Cross, Michael Haynes
OBJECTIVES: We examined the fatigue and recovery for 48h following a full-body resistance exercise session in trained men. DESIGN: Experimental cross-sectional study. METHODS: Eight resistance trained men volunteered to participate (mean±SD; age 27.0±6.0 years, height 1.79±0.05m, weight 81.8±6.8kg, training experience 7.8±5.0 years). Fatigue and pain was measured before, after, 1h post, 24h and 48h post the full-body resistance exercise session, which was based on in-season models used in contact team sports (e...
July 4, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28714825/quadriceps-and-patient-reported-function-in-acl-reconstructed-patients-a-principal-component-analysis
#6
Grant E Norte, Jay N Hertel, Susan A Saliba, David R Diduch, Joseph M Hart
CONTEXT: Assessment of physical function for individuals after ACL reconstruction (ACL-R) is complex and warrants the use of diverse evaluation strategies. To maximize the efficiency of assessment, there is a need to identify tests that provide the most meaningful information about this population. OBJECTIVE: To investigate underlying constructs of quadriceps muscle function that uniquely describe aspects of performance in patients after ACL-R, and establish clinical thresholds for measures able to classify patients with and without ACL-R...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28714794/height-weight-and-age-predict-quadriceps-tendon-length-and-thickness-in-skeletally-immature-patients-letter-to-the-editor
#7
Karina Livino de Carvalho, Paulo Eugênio Silva, Joana Castro, Nicolas Babault, João Luiz Quagliotti Durigan, Rita de Cássia Marqueti
No abstract text is available yet for this article.
July 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28714792/height-weight-and-age-predict-quadriceps-tendon-length-and-thickness-in-skeletally-immature-patients-response
#8
John Xerogeanes, Alexander Ghasem, Dane Todd
No abstract text is available yet for this article.
July 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28714771/acute-effect-of-static-stretching-on-lower-limb-movement-performance-by-using-stabl-virtual-reality-system
#9
Mariam A Ameer, Qassim I Muaidi
CONTEXT: The effect of acute static stretch (ASS) on the lower limb RT has been recently questioned to decrease the risk of falling and injuries in situations requiring a rapid reaction, as in the cases of balance disturbance. OBJECTIVE: The main purpose of this study was to detect the effect of ASS on the lower limb RT by using virtual reality device. DESIGN: Two Group Control Group design. SETTING: Research laboratory...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28712376/grape-pomace-improves-performance-antioxidant-status-fecal-microbiota-and-meat-quality-of-piglets
#10
I Kafantaris, D Stagos, B Kotsampasi, A Hatzis, A Kypriotakis, K Gerasopoulos, S Makri, N Goutzourelas, C Mitsagga, I Giavasis, K Petrotos, S Kokkas, P Goulas, V Christodoulou, D Kouretas
In the present study, grape pomace (GP) was used as feed additive in the diet of weaned piglets in order to develop innovative feedstuffs and to investigate their potential beneficial effects on welfare, productivity and meat quality. For examining the antioxidant capacity of the experimental feeds, 24 piglets of 20 days old were assigned to two experimental groups receiving standard or experimental diet for 30 days. Blood and tissues collections were performed at four different time-points, 2, 20, 35 and 50 days post birth...
July 17, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28707752/analysis-of-the-correlation-between-knee-extension-torque-and-patellar-tendon-elastic-property
#11
P Mannarino, K M M Lima, C R C Fontenelle, T T Matta, B F de Salles, R Simão, L F Oliveira
PURPOSE: Quadriceps strength and patellar tendon (PT) are directly linked and intimately related to daily activities and lower limb function. However, the correlation between knee extension torque (KT) and PT Young's modulus (E) measured directly is still unknown. METHOD: We used supersonic shearwave imaging (SSI) to evaluate the elastic property of PT in healthy young men and analysed its correlation with KT. Twenty-two healthy young males were included and both knees were examined...
July 14, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28704311/acute-neuromuscular-and-endocrine-responses-to-two-different-compound-exercises-squat-versus-deadlift
#12
Matthew J Barnes, Adam Miller, Daniel Reeve, Robin Jc Stewart
Anecdotally, it is believed that the deadlift exercise brings about greater levels of central fatigue than other exercises; however no empirical evidence exists to support this view. Additionally, little is known about the acute endocrine response to heavy deadlift exercise and how this may differ to other similar compound exercises. Therefore, the aim of this study was to identify and compare the acute, neuromuscular and endocrine responses to squat and deadlift exercise. Ten resistance trained males completed 8 sets of 2 repetitions at 95 % of one repetition maximum...
July 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28704309/effect-of-three-different-muscle-action-training-protocols-on-knee-strength-ratios-and-performance
#13
Cassio V Ruas, Lee E Brown, Camila D Lima, Pablo B Costa, Ronei S Pinto
Hamstring to quadriceps (H:Q) ratios are often used to assess strength imbalances. The aims of this study were to compare three different muscle action training protocols on H:Q strength balance and functional performance. Forty untrained males (age: 22.87 ± 2.28 y, mass: 70.66 ± 11.049 kg, ht: 174.29 ± 6.90 cm) performed 6 weeks of training on an isokinetic dynamometer. They were randomly assigned to one of 4 groups; concentric quadriceps and concentric hamstring (CON/CON), eccentric quadriceps and eccentric hamstring (ECC/ECC), concentric quadriceps and eccentric hamstring (CON/ECC), or no training (CNTRL)...
July 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28704193/rehabilitation-of-patients-with-hip-joint-arthroplasty-late-post-surgery-period-hospital-rehabilitation
#14
Maya S Krastanova, Elena M Ilieva, Danelina E Vacheva
BACKGROUND: Hip joint replacement (endoprosthesis, alloplasty) has become one of the most frequent surgery interventions of the 20th century. AIM: To conduct rehabilitation therapy in the late post-surgery period of hospital rehabilitation (45 days after surgery), to track patients' progress and measure the results. MATERIALS AND METHODS: One hundred and fifty-two patients with hip joint endoprosthesis were included in the study. All underwent surgery and rehabilitation at the Department of Clinical Rehabilitation of the Physical and Rehabilitation Medicine Clinic at Doctor G...
June 1, 2017: Folia Medica
https://www.readbyqxmd.com/read/28701540/a-novel-paraplegia-model-in-awake-behaving-macaques
#15
Max Ostrinsky Krucoff, Katie Zhuang, David B Macleod, Allen Yin, Yoon Woo Byun, Roberto Jose Manson, Dennis A Turner, Laura Oliveira, Mikhail A Lebedev
Lower limb paralysis from spinal cord injury (SCI) or neurological disease carries a poor prognosis for recovery and remains a large societal burden. Neurophysiological and neuroprosthetic research have the potential to improve quality of life for these patients; however, the lack of an ethical and sustainable non-human primate model for paraplegia hinders their advancement. Therefore, our multi-disciplinary team developed a way to induce temporary paralysis in awake behaving macaques by creating a fully implantable lumbar epidural catheter-subcutaneous port system that enables easy and reliable targeted drug delivery for sensorimotor blockade...
July 12, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28699406/disruption-of-quadriceps-tendon-after-total-knee-arthroplasty-case-report-of-four-cases
#16
J W Soong, A N Silva, Tan Hc Andrew
Quadriceps tendon rupture after total knee arthroplasty (TKA) is a rare but dire complication. It is associated with adverse outcomes and morbidities. Studies on such complications are scarce in the literature. In this study, we share our experience in the management of four patients who sustained quadriceps tendon rupture in the early postoperative period. Efforts should be focused on prevention. Meticulous surgical techniques during the medial parapatellar approach to preserve the integrity of quadriceps can reduce the risk of rupture...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28698283/long-term-rates-of-mitochondrial-protein-synthesis-are-increased-in-mouse-skeletal-muscle-with-high-fat-feeding-regardless-of-insulin-sensitizing-treatment
#17
Sean A Newsom, Benjamin F Miller, Karyn L Hamilton, Sarah E Ehrlicher, Harrison D Stierwalt, Matthew M Robinson
Skeletal muscle mitochondrial protein synthesis is regulated in part by insulin. The development of insulin resistance with diet-induced obesity may therefore contribute to impairments to protein synthesis and decreased mitochondrial respiration. Yet, the impact of diet-induced obesity and insulin resistance on mitochondrial energetics is controversial with reports varying from decreases to increases in mitochondrial respiration. We investigated the impact of changes in insulin sensitivity on long-term rates of mitochondrial protein synthesis as a mechanism for changes to mitochondrial respiration in skeletal muscle...
July 11, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28697071/orif-patella-fracture-with-a-tension-band-construct
#18
Laura Blum, Mark Hake
Patellar fractures can occur as a result of direct or indirect injuries. Indirect injury is more common and occurs when the patella fails in tension when the force exerted by the extensor mechanism exceeds that of the bone. Common mechanism of indirect injury is rapid knee flexion with fully contracted quadriceps muscle. Treatment with a tension band construct is indicated for transverse patella fractures without significant comminution. This can be performed with 18-gauge wire and either 2 parallel, longitudinally oriented cannulated screws or 2 Kirschner wires...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28687982/adductor-canal-block-in-combination-with-posterior-capsular-infiltration-on-the-pain-control-after-tka
#19
M Zhou, H Ding, J Ke
BACKGROUND: Adductor canal block (ACB) and local infiltration anesthesia (LIA) are both widely accepted techniques for postoperative pain control without quadriceps weakness after total knee arthroplasty (TKA). However, the above techniques are insufficient in efficacy or duration. AIMS: The aim of our study was to address whether ACB plus posterior capsular infiltration (PCI) result in improved analgesia compared with ACB or LIA in patients underwent TKA during 48 h after operation...
July 7, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28687301/reproducibility-of-ultrasound-derived-muscle-thickness-and-echo-intensity-for-the-entire-quadriceps-femoris-muscle
#20
R Santos, P A S Armada-da-Silva
INTRODUCTION: Muscle thickness (MT) and muscle echo-intensity (EI) allow the study of skeletal muscle adaptive changes with ultrasound. This study investigates the intra- and inter-session reliability and agreement of MT and EI measurements for each of the four heads of the quadriceps femoris in transverse and longitudinal scans, using two sizes for the region of interest (ROI); EI measurements only. METHODS: Three B-mode images from two views were acquired from each head of quadriceps femoris from twenty participants (10 females) in two sessions, 7 days apart...
August 2017: Radiography
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