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(Anterior cruciate ligament) AND (quadriceps activation)

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https://www.readbyqxmd.com/read/29152521/isokinetic-strength-deficit-6-months-after-adductor-canal-blockade-for-anterior-cruciate-ligament-reconstruction
#1
James E Christensen, Natalie E Taylor, Scott J Hetzel, John A Shepler, Tamara A Scerpella
Background: Recent evidence shows a delayed return to sport in children and delayed quadriceps recovery in both adults and children who have undergone anterior cruciate ligament (ACL) reconstruction with concomitant femoral nerve blockade (FNB) compared with those who had no blockade. We evaluated the use of adductor canal blockade (ACB), as an alternative to FNB, at the time of ACL reconstruction. Hypothesis: Patients who receive ACB will have greater isokinetic strength at 6 months postoperative compared with patients who receive FNB at the time of ACL reconstruction...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29077216/no-difference-between-mechanical-perturbation-training-with-compliant-surface-and-manual-perturbation-training-on-knee-functional-performance-after-acl-rupture
#2
Zakariya Nawasreh, David Logerstedt, Mathew Failla, Lynn Snyder-Mackler
Manual perturbation training improves dynamic knee stability and functional performance after anterior cruciate ligament rupture (ACL-rupture). However, it is limited to static standing position and does not allow time-specific perturbations at different phase of functional activities. The purpose of this study was to investigate whether administering mechanical perturbation training including compliant surface provides effects similar to manual perturbation training on knee functional measures after an acute ACL-rupture...
October 27, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29019442/the-use-of-hamstring-fatigue-to-reduce-quadriceps-inhibition-after-anterior-cruciate-ligament-reconstruction
#3
Timothy Lowe, Xuanliang Neil Dong
Arthrogenic muscle inhibition, an inability to fully activate the quadriceps muscles, has been persistently observed after anterior cruciate ligament reconstruction (ACLr) surgery. Reductions in quadriceps activation may be partly due to the flexion reflex pathway, hamstrings activation, and reciprocal quadriceps inhibition. Since central fatigue has been shown to modify hamstring excitability and change the hamstring reflex response, hamstring fatigue might alleviate quadriceps muscle inhibition by counteracting the flexion reflex...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28990491/young-athletes-cleared-for-sports-participation-after-anterior-cruciate-ligament-reconstruction-how-many-actually-meet-recommended-return-to-sport-criterion-cutoffs
#4
Allison R Toole, Matthew P Ithurburn, Mitchell J Rauh, Timothy E Hewett, Mark V Paterno, Laura C Schmitt
Study Design Prospective cohort study. Background While meeting objective criterion cutoffs is recommended prior to return to sports following anterior cruciate ligament (ACL) reconstruction, the number of young athletes who meet recommended cutoffs and the impact of cutoffs on longitudinal sports participation are unknown. Objectives To test the hypothesis that a higher proportion of young athletes who meet recommended cutoffs will maintain the same level of sports participation over the year following return-to-sport clearance compared to those who do not meet recommended cutoffs...
November 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28916871/strength-and-functional-symmetry-is-associated-with-post-operative-rehabilitation-in-patients-following-anterior-cruciate-ligament-reconstruction
#5
Jay R Ebert, Peter Edwards, Luke Yi, Brendan Joss, Timothy Ackland, Richard Carey-Smith, Jens-Ulrich Buelow, Ben Hewitt
PURPOSE: To investigate strength and functional symmetry during common tests in patients after anterior cruciate ligament reconstruction (ACLR), and its association with post-operative rehabilitation. METHODS: At a median 11.0 months post-surgery (range 10-14), 111 ACLR patients were assessed. A rehabilitation grading tool was employed to evaluate the duration and supervision of rehabilitation, as well as whether structured jumping, landing and agility exercises were undertaken...
September 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28903010/effect-of-loading-on-in-vivo-tibiofemoral-and-patellofemoral-kinematics-of-healthy-and-acl-reconstructed-knees
#6
Jarred M Kaiser, Michael F Vignos, Richard Kijowski, Geoffrey Baer, Darryl G Thelen
BACKGROUND: Although knees that have undergone anterior cruciate ligament reconstruction (ACLR) often exhibit normal laxity on clinical examination, abnormal kinematic patterns have been observed when the joint is dynamically loaded during whole body activity. This study investigated whether abnormal knee kinematics arise with loading under isolated dynamic movements. HYPOTHESIS: Tibiofemoral and patellofemoral kinematics of ACLR knees will be similar to those of the contralateral uninjured control knee during passive flexion-extension, with bilateral differences emerging when an inertial load is applied...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28899822/early-strength-recovery-after-anterior-cruciate-ligament-reconstruction-using-the-fascia-lata
#7
G Haillotte, A Hardy, B Granger, T Noailles, F Khiami
INTRODUCTION: After undergoing anterior cruciate ligament (ACL) reconstruction, patients must recover at least 80% of their hamstring and quadriceps strength to be able to return to sports without risk to the graft. Harvesting of the patellar tendon leads to large deficits in quadriceps strength, while harvesting the hamstring tendons leads to large deficits in hamstring strength. However, there are no published studies on the strength deficit after ACL reconstruction with the fascia lata...
September 9, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28872396/whole-body-vibration-on-performance-of-quadriceps-after-acl-reconstruction-a-blinded-randomized-controlled-trial
#8
Karinna Sonálya Aires da Costa, Daniel Tezoni Borges, Liane de Brito Macedo, Caio Alano de Almeida Lins, Jamilson Simões Brasileiro
CONTEXT: Whole body vibration (WBV) has been widely used in clinical and sport practice. These devices produce constant vibrations originating symmetrical waves that move along the vertical axis. It is suggested that mechanical stimuli produced by high vibration can be an alternative to improve neuromuscular performance and balance in different populations. However, there is still a lack of consensus in the literature regarding neurophysiological responses in the skeletal muscle immediately after the use of WBV, specifically in individuals subjected to ACL reconstruction...
September 5, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28840325/tunnel-widening-after-single-versus-double-bundle-anterior-cruciate-ligament-reconstruction-a-randomized-8-year-follow-up-study
#9
S Beyaz, Ü Ö Güler, Ş Demir, S Yüksel, B M Çınar, G Özkoç, S Akpınar
OBJECTIVE: The purpose of this study was to compare the single-bundle (SB) and double-bundle (DB) surgical techniques for anterior cruciate ligament (ACL) reconstruction with regard to tunnel widening, isokinetic muscle strength, and clinical outcomes over an 8-year follow-up period. METHODS: This study included 31 patients with ACL injury who underwent ACL reconstruction via the SB (n = 16) or the DB (n = 15) technique. Isokinetic and concentric strength measurements of the quadriceps and hamstring muscles were conducted at postoperative 6 months and postoperative 8 years, and 3D-CT scans of the knee joints were performed on the 2nd, 3rd and 6th month, and the 8th year postoperatively...
August 24, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28822999/preservation-of-remnant-with-poor-synovial-coverage-has-no-beneficial-effect-over-remnant-sacrifice-in-anterior-cruciate-ligament-reconstruction
#10
Bo Hyun Kim, Joong Il Kim, Osung Lee, Ki Woung Lee, Myung Chul Lee, Hyuk Soo Han
PURPOSE: The purpose of the study was to evaluate the influence of synovial coverage of the remnant on clinical outcomes and graft healing in anterior cruciate ligament (ACL) reconstruction. METHODS: Seventy-five patients who underwent second-look arthroscopy after a single-bundle ACL reconstruction using autologous quadriceps tendon graft were included. The patients were divided into two groups according to whether the remnant was preserved (group P, n = 42) or sacrificed (group S, n = 33)...
August 19, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28810991/posterior-cruciate-ligament-injuries-associated-with-military-survival-swim-training
#11
Michael S Crowell, John S Mason, Matthew A Posner, Chad A Haley
OBJECTIVES: Posterior cruciate ligament (PCL) injuries are relatively common injuries associated with athletic activities and high-energy trauma. Posterolateral corner (PLC) injuries frequently accompany injury to the PCL. Diagnosis can be challenging and requires a comprehensive history and physical examination. Patients frequently report vague, nonspecific symptoms and the mechanism of injury is often useful in localizing injured structures. Two of the more common mechanisms for PCL injury include a direct blow to the proximal anterior tibia with the knee flexed, as well as a significant knee hyperextension injury...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28739425/associations-of-isokinetic-and-isotonic-knee-strength-with-knee-function-and-activity-level-after-anterior-cruciate-ligament-reconstruction-a-prospective-cohort-study
#12
Yong-Hao Pua, Jia-Ying Ho, Suelyn Ai-Sim Chan, Shin-Jiun Khoo, Hwei-Chi Chong
BACKGROUND: Although isokinetic dynamometry often serves as a reference to assess the concurrent validity of weight-machine isotonic strength testing, it is unknown whether isokinetic knee strength is associated with knee function and activity level more strongly than isotonic knee strength in patients with an anterior cruciate ligament reconstruction (ACLR). This study aimed to compare the associations of isokinetic and isotonic knee strength with knee function and work-and-sports activity levels in patients with ACLR...
October 2017: Knee
https://www.readbyqxmd.com/read/28573973/knee-flexion-with-quadriceps-cocontraction-a-new-therapeutic-exercise-for-the-early-stage-of-acl-rehabilitation
#13
Andrea Biscarini, Samuele Contemori, Daniele Busti, Fabio M Botti, Vito E Pettorossi
Quadriceps strengthening exercises designed for the early phase of anterior cruciate ligament (ACL) rehabilitation should limit the anterior tibial translation developed by quadriceps contraction near full knee extension, in order to avoid excessive strain on the healing tissue. We hypothesize that knee-flexion exercises with simultaneous voluntary contraction of quadriceps (voluntary quadriceps cocontraction) can yield considerable levels of quadriceps activation while preventing the tibia from translating forward relative to the femur...
December 8, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28566389/does-the-type-of-graft-affect-the-outcome-of-revision-anterior-cruciate-ligament-reconstruction-a-meta-analysis-of-32-studies
#14
REVIEW
A Grassi, M Nitri, S G Moulton, G M Marcheggiani Muccioli, A Bondi, M Romagnoli, S Zaffagnini
AIMS: Our aim was to perform a meta-analysis of the outcomes of revision anterior cruciate ligament (ACL) reconstruction, comparing the use of different types of graft. MATERIALS AND METHODS: A search was performed of Medline and Pubmed using the terms "Anterior Cruciate Ligament" and "ACL" combined with "revision", "re-operation" and "failure". Only studies that reported the outcome at a minimum follow-up of two years were included. Two authors reviewed the papers, and outcomes were subdivided into autograft and allograft...
June 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28538311/intrasession-and-intersession-reliability-of-quadriceps-and-hamstrings-electromyography-during-a-standardized-hurdle-jump-test-with-single-leg-landing
#15
Mark T Cavanaugh, Saied Jalal Aboodarda, David G Behm
The objective of this study was to develop a standardized test to determine quadriceps and hamstrings muscle activation in a position emulating a noncontact anterior cruciate ligament injury. We assessed the intrasession and intersession reliability of surface electromyography (EMG) of the dominant leg after single-leg landing from a standardized hurdle jump. Eighteen subjects (10 males, 8 females) participated in 4 repeated sessions. During each session, individuals performed 3 successful jumps over a hurdle set to 75% of their maximal countermovement jump height and landed on their dominant leg...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28477270/there-is-no-difference-between-quadriceps-and-hamstring-tendon-autografts-in-primary-anterior-cruciate-ligament-reconstruction-a-2-year-patient-reported%C3%A2-outcome-study
#16
Armin Runer, Guido Wierer, Elmar Herbst, Caroline Hepperger, Mirco Herbort, Peter Gföller, Christian Hoser, Christian Fink
PURPOSE: Graft choice for anterior cruciate ligament (ACL) reconstruction is crucial, however the optimal graft source remains a topic of controversy. The purpose of this study is to compare subjective and functional patient-reported outcomes (PRO) after single-bundle ACL reconstruction using quadriceps tendon (QT) or hamstring tendon (HT) autografts for single-bundle ACL reconstruction. We hypothesize that there is no difference in patient-reported functional outcomes after ACL reconstruction using either HT- or QT autograft...
May 5, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28388231/quadriceps-function-and-hamstrings-co-activation-after-anterior-cruciate-ligament-reconstruction
#17
Derek N Pamukoff, Brian G Pietrosimone, Eric D Ryan, Dustin R Lee, J Troy Blackburn
CONTEXT:   Individuals with anterior cruciate ligament reconstruction (ACLR) have quadriceps dysfunction that contributes to physical disability and posttraumatic knee osteoarthritis. Quadriceps function in the ACLR limb is commonly evaluated relative to the contralateral uninjured limb. Bilateral quadriceps dysfunction is common in individuals with ACLR, potentially biasing these evaluations. OBJECTIVE:   To compare quadriceps function between individuals with ACLR and uninjured control participants...
May 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28324994/co-activation-periods-of-gastrocnemius-and-vastus-lateralis-during-walking-evaluated-by-surface-electromyography
#18
Alessandro Mengarelli, Annachiara Strazza, Agnese Sbrollini, Angela Agostinelli, Laura Burattini, Sandro Fioretti, Francesco Di Nardo
"In vivo" studies reported that the co-activation of gastrocnemius and quadriceps femoris (QF) muscles produces ACL strain values greater than those caused by an isolated activation of either muscle. Aim of this study was to assess the co-activation of gastrocnemius (lateral head, GL) and vastus lateralis (VL) in healthy and young adults during walking. To this purpose the Statistical Gait Analysis was performed, that allows a characterization of gait considering hundreds of strides belonging to the same walking trial...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28290752/mri-based-assessment-of-lower-extremity-muscle-volumes-in-patients-before-and-after-acl-reconstruction
#19
Grant E Norte, Katherine R Knaus, Chris Kuenze, Geoffrey G Handsfield, Craig H Meyer, Silvia S Blemker, Joseph M Hart
CONTEXT: Study of muscle volumes in patients after anterior cruciate ligament (ACL) injury and reconstruction (ACL-R) is largely limited to cross-sectional assessment of the thigh musculature, which may inadequately describe post-traumatic and post-surgical muscle function. No studies have prospectively examined the influence of ACL injury and reconstruction on lower extremity muscle volumes. OBJECTIVE: Assess magnetic resonance imaging (MRI) derived lower extremity muscle volumes, and quantify quadriceps strength and activation in patients following ACL injury and reconstruction...
March 14, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28284998/acute-mobilization-and-migration-of-bone-marrow-derived-stem-cells-following-anterior-cruciate-ligament-rupture
#20
T Maerz, M Fleischer, M D Newton, A Davidson, M Salisbury, P Altman, M D Kurdziel, K Anderson, A Bedi, K C Baker
OBJECTIVE: Little is known regarding acute local and systemic processes following anterior cruciate ligament (ACL) rupture. No study has elucidated whether bone marrow-derived mesenchymal stem cells (MSCs) are mobilized into circulation and recruited to the injured joint. METHODS: In Part 1, Lewis rats were randomized to noninvasive ACL rupture (Rupture) or non-injured (Control) (n = 6/group). After 72 h, whole blood MSC concentration was assessed using flow cytometry...
August 2017: Osteoarthritis and Cartilage
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