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Ligament cruciate anterior

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https://www.readbyqxmd.com/read/29453931/comparison-of-return-to-pre-injury-sport-after-10-mm-size-bone-patellar-tendon-bone-bptb-versus-8-mm-hamstring-anterior-cruciate-ligament-reconstruction-a-retrospective-study-with-a-two-year-follow-up
#1
Rimtautas Gudas, Rokas Jurkonis, Alfredas Smailys
BACKGROUND The aim of this study was to evaluate the reconstruction of a torn anterior cruciate ligament (ACL) with 10 mm diameter BPTB (bone-patellar tendon-bone) autograft versus 8 mm HT (hamstring tendon) autografts, to compare the ability to restore pre-injury sports activities and reduce revision risk after these procedures. MATERIAL AND METHODS A prospective clinical review was performed to compare results of patients who underwent primary anatomical ACLR with 10 mm BPTB autografts with patients who underwent 8 mm diameter HT autografts, between January 2011 and January 2014...
February 17, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29453795/inflammatory-and-degenerative-phases-resulting-from-anterior-cruciate-rupture-in-a-non-invasive-murine-model-of-post-traumatic-osteoarthritis
#2
Sophie Jane Gilbert, Cleo Selina Bonnet, Paulina Stadnik, Victor Colin Duance, Deborah JaneMason, Emma Jane Blain
Joint injury is the predominant risk factor for post-traumatic osteoarthritis development (PTOA). Several non-invasive mouse models mimicking human PTOA investigate molecular mechanisms of disease development; none have characterised the inflammatory response to this acute traumatic injury. Our aim was to characterise the early inflammatory phase and later degenerative component in our in vivo non-invasive murine model of PTOA induced by anterior cruciate ligament (ACL) rupture. Right knees of 12-week-old C57Bl6 mice were placed in flexion at a 30° offset position and subjected to a single compressive load (12N, 1...
February 17, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29453584/variations-in-the-attachments-of-the-medial-meniscal-anterior-horn-a-descriptive-cadaveric-study
#3
Innocent Ouko, James Kigera, Kevin Ongeti, Anne Pulei
PURPOSE: Meniscal tears are common in Kenya, with prevalence rates ranging from 45 to 78% of intracapsular knee pathology. Diagnosis of these injuries relies on the use of both clinical signs and symptoms as well as radiological investigations. In a few instances, radiological detection could be difficult, partly because of variant attachment patterns of the medial meniscal anterior horn. Some of these unusual attachments of the anterior horn of the medial meniscus could even be mistaken for meniscal tears...
February 16, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29450729/physical-activity-and-mediterranean-diet-based-on-olive-tree-phenolic-compounds-from-two-different-geographical-areas-have-protective-effects-on-early-osteoarthritis-muscle-atrophy-and-hepatic-steatosis
#4
Marta Anna Szychlinska, Paola Castrogiovanni, Francesca Maria Trovato, Houda Nsir, Mokhtar Zarrouk, Debora Lo Furno, Michelino Di Rosa, Rosa Imbesi, Giuseppe Musumeci
PURPOSE: Osteoarthitis (OA) leads to progressive loss of articular cartilage, pain and joint disability. An acute injury constitutes an important risk factor for early OA, determining an inflammatory process responsible of cartilage degeneration and muscle atrophy, due to the joint pain and immobility. The study aims to assess the effects of conjugation of physical activity and diet enriched by olive tree compounds [extra virgin olive oil (EVOO) and olive leaf extract (OLE)], on the musculoskeletal system in OA rat model...
February 15, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29450567/coronal-tibial-anteromedial-tunnel-location-has-minimal-effect-on-knee-biomechanics
#5
Shigehiro Asai, Donghwi Kim, Yuichi Hoshino, Chan-Woong Moon, Akira Maeyama, Monica Linde, Patrick Smolinski, Freddie H Fu
PURPOSE: Studies have found anatomic variation in the coronal position of the insertion site of anteromedial (AM) bundle of the anterior cruciate ligament (ACL) on the tibia, which can lead to questions about tunnel placement during ACL reconstruction. The purpose of this study was to determine how mediolateral placement of the tibial AM graft tunnel in double-bundle ACL reconstructions affects knee biomechanics. METHODS: Two different types of double-bundle ACL reconstructions were performed...
February 15, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29443537/a-randomized-clinical-trial-to-evaluate-attached-hamstring-anterior-cruciate-ligament-graft-maturity-with-magnetic-resonance-imaging
#6
Shaohua Liu, Hong Li, Hongyue Tao, Yaying Sun, Shiyi Chen, Jiwu Chen
BACKGROUND: The hamstring tendons are commonly harvested for anterior cruciate ligament (ACL) reconstruction with detachment of the tibial insertion. Retaining the insertion may help to preserve vascularity and viability of the graft and bypass the stages of avascular necrosis and revascularization, which might be beneficial to graft maturity. PURPOSE: To investigate and compare graft maturity by magnetic resonance imaging (MRI) after ACL reconstruction with preservation or detachment of hamstring tendon tibial insertion at up to 2 years...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29440951/double-whip-stitch-for-free-graft-femoral-fixation-in-acl-reconstruction-experimental-study-on-porcine-model
#7
Cristian Tudor Buescu, Cristian Mircea Dudescu, Sergiu Caterev, Dan Gheorghe Osvald Lucaciu
Background and aims: Using free quadriceps tendon graft for anterior cruciate ligament (ACL) reconstruction has become more popular in the last years due to the low morbidity at the harvest site and biomechanical and structural properties similar to other types of graft (hamstring and patellar tendons). As long as the tibial tunnel fixation with interference screws is considered the standard fixation, femoral fixation is still an open subject. Even though the most common type of femoral tunnel fixation are the cortical suspension devices, the type of suture used for tying the graft to the loop is still evaluated and discussed...
2018: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29438746/longitudinal-changes-in-mr-t1%C3%AF-t2-signal-of-meniscus-and-its-association-with-cartilage-t1p-t2-in-acl-injured-patients
#8
Joseph Knox, Valentina Pedoia, Amy Wang, Matthew Tanaka, Gabby B Joseph, Jan Neumann, Thomas M Link, Xiaojuan Li, C Benjamin Ma
OBJECTIVE: To evaluate the longitudinal changes in meniscal T1ρ/T2 signal post-reconstruction in patients with acute anterior cruciate ligament (ACL) injury and to investigate the association with T1ρ/T2 signal in articular knee cartilage. METHOD: In this prospective study, knees of 37 patients with ACL-injury and reconstruction in addition to 13 healthy controls were scanned using magnetic resonance imaging (MRI) T1ρ/T2 mapping. Quantitative analysis of the meniscus was performed in the anterior/posterior horns of lateral/medial meniscus fourteen sub-compartments of cartilage spanning the medial/lateral area of the tibia and femoral condyles...
February 10, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29438635/twenty-year-follow-up-study-comparing-operative-versus-nonoperative-treatment-of-anterior-cruciate-ligament-ruptures-in-high-level-athletes
#9
Daan T van Yperen, Max Reijman, Eline M van Es, Sita M A Bierma-Zeinstra, Duncan E Meuffels
BACKGROUND: An anterior cruciate ligament (ACL) rupture has major consequences at midterm follow-up, with an increasing chance of developing an old knee in a young patient. The long-term (≥20 years) effects of the operative and nonoperative treatment of ACL ruptures are still unclear. PURPOSE: To compare the long-term treatment outcomes of operative versus nonoperative treatment of ACL ruptures in high-level athletes. STUDY DESIGN: Cohort study; Level of evidence, 2...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29435116/the-inhibition-of-plc%C3%AE-1-protects-chondrocytes-against-osteoarthritis-implicating-its-binding-to-akt
#10
Heguo Cai, Ning Qu, Xiaolei Chen, Yang Zhou, Xinpeng Zheng, Bing Zhang, Chun Xia
Previous studies have addressed the involvement of phosphoinositide-specifc phospholipase γ1 (PLCγ1) and protein kinase B (PKB/Akt) in osteoarthritis (OA) pathogenesis, but it is not ascertained the possibility of them to be potential targets for OA therapy. Here, through local intra-articular injection of PLCγ or Akt inhibitor in a rat OA model induced by anterior cruciate ligament transaction plus medial meniscus resection, the architecture of chondrocyte and matrix organization of articular cartilage were observed using histopathological assays and Aggrecan, Col2, PLCγ1, and Akt levels were detected using immunohistochemistry assays...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29434808/double-bundle-revision-anterior-cruciate-ligament-reconstruction-is-effective-in-rescuing-failed-primary-reconstruction-and-re-introducing-patients-to-physical-exercise
#11
Changqing Jiang, Guofei Chen, Peng Chen, Wei Li, Honglei Zhang, Wentao Zhang
The anterior cruciate ligament (ACL) is one of a pair of cruciate ligaments in the human knee and is critical for knee stability, as it limits anterior tibial translation on the femur, restrains rotation and resists varus and valgus joint forces. The present study aimed to assess the effect of double-bundle revision anterior cruciate ligament (ACL) reconstruction in improving the subjective and objective functions and re-introducing patients to physical activity after primary ACL reconstruction had failed. A total of 34 patients who underwent double-bundle ACL revision surgeries were included in the present retrospective study...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29433481/impact-of-treatment-strategy-and-physical-performance-on-future-knee-related-self-efficacy-in-individuals-with-acl-injury
#12
Vala Flosadottir, Richard Frobell, Ewa M Roos, Eva Ageberg
BACKGROUND: In people with anterior cruciate ligament (ACL) injury, high self-efficacy facilitates recovery, indicated by improved muscle function, reduced knee symptoms and increased physical activity. Impact of treatment on future self-efficacy is however not well investigated. The aims of the study were to 1) investigate knee-related self-efficacy 6 years after acute ACL injury in patients treated with exercise therapy alone or in combination with either early or the option of delayed ACL reconstruction (ACLR), and 2) to investigate associations between single-leg physical performance at various time points after ACL injury and knee self-efficacy at 6 years after injury...
February 13, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29433043/increased-movement-variability-in-one-leg-hops-about-20-years-after-treatment-of-anterior-cruciate-ligament-injury
#13
Divya Srinivasan, Eva Tengman, Charlotte K Häger
BACKGROUND: Recent studies highlight the need for understanding movement control of adjacent joints when evaluating knee function following anterior cruciate ligament (ACL) injury. However, while short-term adaptations to lower-extremity joint coupling have been studied, little is known about any potential long-term adaptations in neuromuscular control displayed by ACL-injured individuals. The aim of our study was to determine whether coordination variability of the hip-knee joint couplings during the one-leg hop is altered about 20 years after injury in two ACL-injured groups compared to healthy knee controls...
February 6, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29431515/different-expression-profiles-of-the-lysyl-oxidases-and-matrix-metalloproteinases-in-human-acl-fibroblasts-after-co-culture-with-synovial-cells
#14
Chunli Wang, Chunming Xu, Rongfu Chen, Li Yang, Kl Paul Sung
Purposes The anterior cruciate ligament (ACL) has poor functional healing response. The synovial tissue surrounding ACL ligament might be a major regulator of the microenvironment in the joint cavity after ACL injury, thus affecting the repair process. Using transwell co-culture, this study explored the direct influence of human synovial cells (HSCs) on ACL fibroblasts (ACLfs) by characterizing the differential expression of the lysyl oxidase family (LOXs) and matrix metalloproteinases (MMP-1, -2, -3), which facilitate extracellular matrix (ECM) repair and degradation, respectively...
February 12, 2018: Connective Tissue Research
https://www.readbyqxmd.com/read/29430399/associated-reconstruction-of-anterior-cruciate-and-anterolateral-ligaments-with-single-asymmetric-hamstring-tendons-graft
#15
Alejandro Espejo-Baena, Alejandro Espejo-Reina, Abel Gómez-Cáceres, Maria Josefa Espejo-Reina, Jaime Dalla Rosa-Nogales
The anterior cruciate ligament (ACL) rupture is a common disease that accounts for 250,000 cases/year in the United States. The anterolateral ligament (ALL) has been suggested to be an important restraint for rotational instability, and its reconstruction provides a reinforcement to the ACL reconstruction in this aspect, especially in high-demand athletes and in knees with high-grade pivot shift. Different techniques for associated ACL and ALL reconstruction have been described, but the ideal technique remains unclear...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29430394/both-posterior-root-lateral-medial-meniscus-tears-with-anterior-cruciate-ligament-rupture-the-step-by-step-systematic-arthroscopic-repair%C3%A2-technique
#16
Bancha Chernchujit, Renaldi Prasetia
The occurrence of posterior root tear of both the lateral and medial menisci, combined with anterior cruciate ligament rupture, is rare. Problems may be encountered such as the difficulty to access the medial meniscal root tear, the confusing circumstances about which structure to repair first, and the possibility of the tunnel for each repair to become taut inside the tibial bone. We present the arthroscopy technique step by step to overcome the difficulties in an efficient and time-preserving manner.
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29429044/timing-not-magnitude-of-force-may-explain-sex-dependent-risk-of-acl-injury
#17
Haraldur B Sigurðsson, Þórarinn Sveinsson, Kristín Briem
PURPOSE: The anterior cruciate ligament is loaded through valgus moment, vertical ground reaction force, and internal rotation moment. The aim of this study was to compare the timing of force peaks during early stance between youth girls and boys. METHODS: One-hundred and twenty-nine team sport athletes aged 9-12 completed a total of 2540 cutting maneuvers captured with an 8-camera motion capture system. Timing of early force peaks was analyzed within 100 ms after ground contact...
February 10, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29426312/anterior-cruciate-ligament-reconstruction-with-quadriceps-tendon-patellar-bone-allograft-matched-case-control-study
#18
Yoon-Ho Kwak, Sahnghoon Lee, Myung Chul Lee, Hyuk-Soo Han
BACKGROUND: Quadriceps tendon-patellar bone (QTPB) autograft is an excellent graft option with good clinical outcome. Use of QTPB autografts have increased because they minimize donor-site morbidity including anterior knee pain, while providing adequate mechanical strength. Although, there were many clinical results about allografts that used in anterior cruciate ligament (ACL) reconstruction, it have never been reported about the clinical outcome of ACL reconstruction with QTPB allograft...
February 9, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29426012/mri-ute-t2-profile-characteristics-correlate-to-walking-mechanics-and-patient-reported-outcomes-2-years-after-acl-reconstruction
#19
Ashley A Williams, Matthew R Titchenal, Thomas P Andriacchi, Constance R Chu
OBJECTIVE: Quantitative MRI Ultrashort echo time (UTE) T2* is sensitive to cartilage deep tissue matrix changes after anterior cruciate ligament reconstruction (ACLR). This study was performed to determine whether UTE-T2* profile analyses is a useful clinical metric for assessing cartilage matrix degeneration. This work tests the hypotheses that UTE-T2* depthwise rates of change (profile slopes) correlated with clinical outcome metrics of walking mechanics and patient reported outcomes (PRO) in patients 2 years after ACLR...
February 6, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29425835/the-influence-of-internal-and-external-tibial-rotation-offsets-on-knee-joint-and-ligament-biomechanics-during-simulated-athletic-tasks
#20
Nathaniel A Bates, Rebecca J Nesbitt, Jason T Shearn, Gregory D Myer, Timothy E Hewett
BACKGROUND: Following anterior cruciate ligament injury and subsequent reconstruction transverse plane tibiofemoral rotation becomes underconstrained and overconstrained, respectively. Conflicting reports exist on how rotations influence loading at the knee. This investigation aimed to determine the mechanical effects of internal and external tibial rotation offsets on knee kinematics and ligament strains during in vitro simulations of in vivo recorded kinematics. METHOD: A 6-degree-of-freedom robotic manipulator arm was used to articulate 11 cadaveric tibiofemoral joint specimens through simulations of four athletic tasks produced from in vivo recorded kinematics...
February 2, 2018: Clinical Biomechanics
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