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https://www.readbyqxmd.com/read/29667429/quadriceps-function-knee-pain-and-self-reported-outcomes-in-patients-with-anterior-cruciate-ligament-reconstruction
#1
Adam S Lepley, Brian Pietrosimone, Marc L Cormier
CONTEXT:   Interactions among muscle strength, pain, and self-reported outcomes in patients with anterior cruciate ligament reconstruction (ACLR) are not well understood. Clarifying these interactions is of clinical importance because improving physical and psychological function is thought to optimize outcomes after ACLR. OBJECTIVE:   To examine the relationships among neuromuscular quadriceps function, pain, self-reported knee function, readiness to return to activity, and emotional response to injury both before and after ACLR...
April 18, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29666155/sil1-the-er-hsp70-co-chaperone-plays-a-critical-role-in-maintaining-skeletal-muscle-proteostasis-and-physiology
#2
Viraj P Ichhaporia, Jieun Kim, Kanisha Kavdia, Peter Vogel, Linda Horner, Sharon Frase, Linda M Hendershot
Mutations in SIL1 , a co-factor for the endoplasmic reticular (ER) chaperone BiP, cause Marinesco-Sjögren syndrome (MSS), an autosomal recessive disorder. Using a mouse model, we characterized molecular aspects of the progressive myopathy associated with MSS. Proteomic-profiling of quadriceps at the onset of myopathy revealed that SIL1 deficiency affected multiple pathways critical to muscle physiology. We observed an increase in ER chaperones prior to the onset of muscle weakness, which was complemented by up-regulation of multiple components of cellular protein degradation pathways...
April 9, 2018: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29662599/-spontaneous-simultaneous-bilateral-rupture-of-the-quadriceps-tendon-in-patients-with-parathyroid-adenoma-case-report-and-literature-review
#3
Amour Espoir Mokoko-Louckou, Badarou Chaibou, Ismail Abdouli, Kevin Parfait Bienvenu Bouhelo-Pam, Mohammed El Idrissi, Mohammed Shimi, Abdelhalim El Ibrahimi, Abdelmajid El Mrini
Spontaneous as well as bilateral and simultaneous rupture of the quadriceps tendon is rare. We report the case of a 53-year old patient followed up for parathyroid adenoma complicated by renal failure, admitted for spontaneous bilateral rupture of the two quadriceps tendons. He underwent surgical repair allowing him to maintain his autonomy.
2018: Pan African Medical Journal
https://www.readbyqxmd.com/read/29661570/is-hip-strengthening-the-best-treatment-option-for-females-with-patellofemoral-pain-a-randomized-controlled-trial-of-three-different-types-of-exercises
#4
Marcelo Camargo Saad, Rodrigo Antunes de Vasconcelos, Letícia Villani de Oliveira Mancinelli, Matheus Soares de Barros Munno, Rogério Ferreira Liporaci, Débora Bevilaqua Grossi
OBJECTIVE: To evaluate the effect of three types of exercise intervention in patients with patellofemoral pain and to verify the contributions of each intervention to pain control, function, and lower extremity kinematics. METHODS: A randomized controlled, single-blinded trial was conducted. Forty women with patellofemoral pain were randomly allocated into four groups: hip exercises, quadriceps exercises, stretching exercises and a control group (no intervention)...
April 4, 2018: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/29658521/ratios-of-torques-of-antagonist-muscle-groups-in-female-soccer-players
#5
Artur Struzik, Adam Siemieński, Tadeusz Bober, Bogdan Pietraszewski
PURPOSE: An increase in the value of the hamstring-to-quadriceps (H/Q) ratio with an increase in angular velocity may effectively prevent injuries of the back of the thigh. Previous studies have found that the conventional H/Q ratio was unaltered along with an increasing angular velocity in females. Therefore, this study aimed to investigate the relationships between the conventional H/Q ratio and angular velocity in a group of female soccer players. METHODS: The study was carried out on a group of 16 female soccer players (age: 20...
2018: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29655901/in-vivo-heterotopic-culturing-of-prefabricated-tendon-grafts-with-mechanical-stimulation-in-a-sheep-model
#6
M Petri, P Lu, M Omar, M Ettinger, C Krettek, C Neunaber, M Jagodzinski
BACKGROUND: The goal of this study is to investigate the biomechanical and histological properties of in vivo heterotopically prefabricated cruciate ligament replacement grafts with and without mechanical stimulation. The clinical goal is to heterotopically prefabricate a bone-tendon-bone graft for anterior cruciate ligament reconstruction, which allows rapid ingrowth and early full weight bearing. METHODS: In a sheep model, eight quadriceps tendon grafts were harvested and introduced into culture chambers at their proximal and distal ends...
April 11, 2018: Knee
https://www.readbyqxmd.com/read/29652169/contribution-of-neuromuscular-factors-to-quadriceps-asymmetry-after-anterior-cruciate-ligament-reconstruction
#7
Alexa K Johnson, Riann M Palmieri-Smith, Lindsey K Lepley
CONTEXT:   To quantify quadriceps weakness after anterior cruciate ligament reconstruction (ACLR), researchers have often analyzed only peak torque. However, analyzing other characteristics of the waveform, such as the rate of torque development (RTD), time to peak torque (TTP), and central activation ratio (CAR), can lend insight into the underlying neuromuscular factors that regulate torque development. OBJECTIVE:   To determine if interlimb neuromuscular asymmetry was present in patients with ACLR at the time of clearance to return to activity...
April 13, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29644702/influence-of-group-iii-iv-muscle-afferents-on-small-muscle-mass-exercise-performance-a-bioenergetics-perspective
#8
Ryan M Broxterman, Thomas J Hureau, Gwenael Layec, David E Morgan, Amber D Bledsoe, Jacob E Jessop, Markus Amann, Russell S Richardson
The direct influence of group III/IV muscle afferents on exercise performance remains equivocal. Therefore, all-out intermittent isometric single-leg knee-extensor exercise and phosphorous magnetic resonance spectroscopy (31 P-MRS) were utilized to provide a high time resolution assessment of exercise performance and skeletal muscle bioenergetics in control conditions (CTRL) and with the attenuation of group III/IV muscle afferent feedback via lumbar intrathecal fentanyl (FENT). In both conditions, seven recreationally active men performed 60 maximal voluntary quadriceps contractions (MVC; 3 s contraction, 2 s relaxation), while knee-extensor force and 31 P-MRS were assessed during each MVC...
April 12, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29644038/calcific-tendonitis-of-the-quadriceps-tendon
#9
S A Webb, M A Hopper, J Chitnavis
A 61-year-old woman presented with chronic anterior pain and stiffness in the distal left thigh. Examination revealed swelling and tenderness immediately proximal to the patella. Radiographs showed opacities in the distal anterior thigh whilst MRI identified enlargement of the distal quadriceps tendon with splayed fibres separated by solid conglomerates. Dystrophic calcification of the quadriceps tendon was diagnosed. Blood tests revealed no systemic abnormalities in calcium handling. Arthroscopy of the left knee identified calcific deposits in the supra-patella pouch with surrounding synovitis...
April 2018: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29643604/comparison-of-efficiency-of-elastic-and-non-elastic-taping-on-induced-quadriceps-fatigue-by-knee-extension-exercise
#10
Hyun-Jun Jung, Ju-Young Lee, Jin-Kyeong Hwang, Bo-Ram Choi
[Purpose] The purpose of this study is to examine the effects of elastic and non-elastic taping on induced quadriceps fatigue by knee extension exercise. [Subjects and Methods] Thirty healthy females were randomly assigned to an elastic tape group (ET, n=10), a non-elastic tape group (NET, n=10), or a no tape group (NT, n=10). Taping groups attached taping on quadriceps femoris. Three groups are conducted knee extension exercise for 10 times and 3 sets during 10 minutes. Knee extension peak torque measured before and after knee extension exercise...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29643603/physical-performance-of-elderly-adults-in-association-with-thigh-tissue-composition-a-cross-sectional-study
#11
Ibrahim Altubasi
[Purpose] Literature has revealed age-related changes in body regional tissues in the form of reduced muscle size and increased adipose tissue. There is also a decline in the performance of physical function with aging. The aim of this study is to examine the partial and part correlations between physical performance and thigh tissue composition among elderly adults. [Subjects and Methods] Twenty-two elderly participants enrolled in this cross-sectional study. Mid-thigh CT images were used to determine the cross-sectional area of the muscular and adipose tissues...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29643590/immediate-effects-of-transcutaneous-electrical-nerve-stimulation-on-six-minute-walking-test-borg-scale-questionnaire-and-hemodynamic-responses-in-patients-with-chronic-heart-failure
#12
Majid Ashraf Ganguie, Behrouz Attarbashi Moghadam, Nastaran Ghotbi, Azadeh Shadmehr, Mohammad Masoumi
[Purpose] This study examined the immediate effects of transcutaneous electrical nerve stimulation on a six-minute walking test, Borg scale questionnaire and hemodynamic responses in patients with chronic heart failure. [Subjects and Methods] Thirty patients with stable systolic chronic heart failure came to the pathophysiology laboratory three times. The tests were randomly performed in three sessions. In one session, current was applied to the quadriceps muscles of both extremities for 30 minutes and a six-minute walking test was performed immediately afterward...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29628406/eccentric-training-combined-to-neuromuscular-electrical-stimulation-is-not-superior-to-eccentric-training-alone-for-quadriceps-strengthening-in-healthy-subjects-a-randomized-controlled-trial
#13
Claudia Ferreira Gomes da Silva, Felipe Xavier de Lima E Silva, Karoline Baptista Vianna, Gabriel Dos Santos Oliveira, Marco Aurélio Vaz, Bruno Manfredini Baroni
BACKGROUND: Both eccentric training and neuromuscular electrical stimulation (NMES) are used for quadriceps strengthening. However, the effects of these interventions combined are unclear. OBJECTIVES: To compare the effects of eccentric training combined to NMES and eccentric training alone on structure, strength, and functional performance of knee extensor muscles of healthy subjects. METHODS: This is a three-arm, single-blinded, randomized controlled trial...
March 28, 2018: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/29628380/quadriceps-tendon-autograft-in-anterior-cruciate-ligament-reconstruction-a-systematic-review
#14
REVIEW
Eoghan T Hurley, Manuel Calvo-Gurry, Dan Withers, Shane K Farrington, Ray Moran, Cathal J Moran
PURPOSE: To systematically review the current evidence to ascertain whether quadriceps tendon autograft (QT) is a viable option in anterior cruciate ligament reconstruction. METHODS: A literature review was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Cohort studies comparing QT with bone-patellar tendon-bone autograft (BPTB) or hamstring tendon autograft (HT) were included. Clinical outcomes were compared, with all statistical analyses performed using IBM SPSS Statistics for Windows, version 22...
April 5, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29628379/quadriceps-tendon-autograft-for-primary-anterior-cruciate-ligament-reconstruction-a-systematic-review-of-comparative-studies-with-minimum-two-year-follow-up
#15
REVIEW
John W Belk, Matthew J Kraeutler, Hayden A Marshall, Jesse A Goodrich, Eric C McCarty
PURPOSE: To systematically review the literature in an effort to compare outcomes of patients undergoing primary anterior cruciate ligament reconstruction (ACLR) with a quadriceps tendon (QT) autograft versus a bone-patellar tendon-bone (BPTB) or hamstring tendon (HT) autograft. METHODS: A systematic review was performed by searching PubMed, the Cochrane Library, and Embase to locate studies (Level of Evidence I-III) comparing the clinical outcomes of the QT autograft versus the BPTB or HT autograft in patients undergoing primary ACLR...
April 5, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29625589/intramuscular-transplantation-of-bone-marrow-cells-prolongs-the-lifespan-of-sod1-g93a-mice-and-modulates-expression-of-prognosis-biomarkers-of-the-disease
#16
Amaya Rando, Diego Pastor, Mari Carmen Viso-León, Anna Martínez, Raquel Manzano, Xavier Navarro, Rosario Osta, Salvador Martínez
BACKGROUND: Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterized by progressive muscle weakness, paralysis and death. There is no effective treatment for ALS and stem cell therapy has arisen as a potential therapeutic approach. METHODS: SOD1 mutant mice were used to study the potential neurotrophic effect of bone marrow cells grafted into quadriceps femoris muscle. RESULTS: Bone marrow intramuscular transplants resulted in increased longevity with improved motor function and decreased motoneuron degeneration in the spinal cord...
April 6, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29625576/skeletal-cardiac-and-respiratory-muscle-function-and-histopathology-in-the-p448lneo-mouse-model-of-fkrp-deficient-muscular-dystrophy
#17
Qing Yu, Melissa Morales, Ning Li, Alexander G Fritz, Ren Ruobing, Anthony Blaeser, Ershia Francois, Qi-Long Lu, Kanneboyina Nagaraju, Christopher F Spurney
BACKGROUND: Fukutin-related protein (FKRP) mutations are the most common cause of dystroglycanopathies known to cause both limb girdle and congenital muscular dystrophy. The P448Lneo- mouse model has a knock-in mutation in the FKRP gene and develops skeletal, respiratory, and cardiac muscle disease. METHODS: We studied the natural history of the P448Lneo- mouse model over 9 months and the effects of twice weekly treadmill running. Forelimb and hindlimb grip strength (Columbus Instruments) and overall activity (Omnitech Electronics) assessed skeletal muscle function...
April 6, 2018: Skeletal Muscle
https://www.readbyqxmd.com/read/29625361/quadriceps-concentric-eccentric-force-and-muscle-architecture-in-copd-patients-vs-healthy-men
#18
Giuseppe Coratella, Nicoletta Rinaldo, Federico Schena
The aim of this study was to compare quadriceps concentric and eccentric strength and muscle architecture in chronic obstructive pulmonary disease (COPD) patients vs healthy men. Thirty-five COPD patients (age = 65 ± 4 yrs, forced expiratory volume (FEV1 ) = 63 ± 10%; FEV1 /forced vital capacity (FVC)=57 ± 13% of predicted) and 25 age-matched healthy men (age = 65 ± 4 yrs, FEV1 =114 ± 17%; FEV1 /FVC = 101 ± 6% of predicted) (CON) participated in the present cross-sectional study...
April 3, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29625360/correlation-between-quadriceps-and-hamstrings-inter-limb-strength-asymmetry-with-change-of-direction-and-sprint-in-u21-elite-soccer-players
#19
Giuseppe Coratella, Marco Beato, Federico Schena
The aim of this study was to investigate the relationship between in quadriceps and hamstrings inter-limb strength asymmetry and change of direction, sprinting and jumping abilities in U21 elite soccer players. Twenty-seven soccer players volunteered for this study. Isokinetic quadriceps and hamstrings peak torque was measured at high and low angular velocities, both in concentric and eccentric modalities. Performance in agility T-test, 20 + 20 m shuttle-test, 10 m and 30 m sprint, squat jump (SJ) and counter-movement jump (CMJ), were measured...
April 3, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29623377/the-increase-in-posterior-tibial-slope-provides-a-positive-biomechanical-effect-in-posterior-stabilized-total-knee-arthroplasty
#20
Kyoung-Tak Kang, Sae Kwang Kwon, Juhyun Son, Oh-Ryong Kwon, Jun-Sang Lee, Yong-Gon Koh
PURPOSE: This study aims to clarify the influence of the posterior tibial slope (PTS) on knee joint biomechanics after posterior-stabilized (PS) total knee arthroplasty (TKA) using a computer simulation. METHODS: A validated TKA computational model was used to evaluate and quantify the effects of an increased PTS. In order to conduct a squat simulation, models with a - 3° to 15° PTS using increments of 3° were developed. Forces on the quadriceps and collateral ligament, a tibial posterior translation, contact point on a polyethylene (PE) insert, and contact stress on the patellofemoral (PF) joint and post in a PE insert were compared...
April 5, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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