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Artificial ligament LARS

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https://www.readbyqxmd.com/read/27453894/lars-artificial-ligament-versus-abc-purely-polyester-ligament-for-anterior-cruciate-ligament-reconstruction
#1
Dimitrios Ph Iliadis, Dimitrios N Bourlos, Dimitrios S Mastrokalos, Efstathios Chronopoulos, George C Babis
BACKGROUND: Graft choice for anterior cruciate ligament (ACL) reconstruction is of critical importance. Various grafts have been used so far, with autografts long considered the optimal solution for the treatment of ACL-deficient knees. Limited data are available on the long-term survivorship of synthetic grafts. PURPOSE: To compare the functional outcome and survivorship of ACL reconstructions performed using the LARS (ligament augmentation and reconstruction system) ligament and the ABC (active biosynthetic composite) purely polyester ligament...
June 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27372554/lars%C3%A2-band-and-tube-for-extensor-mechanism-reconstructions-in-proximal-tibial-modular-endoprostheses-after-bone-tumors
#2
Gerhard M Hobusch, Philipp T Funovics, Cynthia Hourscht, Stephan E Domayer, Stephan E Puchner, Martin Dominkus, Reinhard Windhager
UNLABELLED: Wide tumor resections around the proximal tibia (pT) are related to compromised function and high complication rates. This retrospective study aims to present the technique employed as well as functional and surgical outcomes of patients undergoing a Ligament Advanced Reinforcement System (LARS®) reconstruction of the knee extensor apparatus after tumor resection and modular endoprosthetic reconstruction of the proximal tibia. Twenty-five patients who received an artificial ligament after pT resection (11 men and 14 women; mean age, 29years; range 11 to 75years, with a minimum follow-up of 24months) were analyzed regarding the ISOLS failure mode classification...
October 2016: Knee
https://www.readbyqxmd.com/read/26122668/clinical-and-functional-outcome-after-anterior-cruciate-ligament-reconstruction-using-the-lars%C3%A2-system-at-a-minimum-follow-up-of-10-years
#3
Thomas M Tiefenboeck, Elisabeth Thurmaier, Michael M Tiefenboeck, Roman C Ostermann, Julian Joestl, Markus Winnisch, Mark Schurz, Stefan Hajdu, Marcus Hofbauer
BACKGROUND: Since the 1980's several artificial ligaments were used for reconstruction of the anterior cruciate ligament (ACL) serving different complications. The aim of this study was to assess the clinical and functional outcomes of primary ACL reconstruction using the Ligament Augmentation Reconstruction System (LARS™) with a minimum follow-up of 10-years. The LARS™ presents a synthetic material consisting of non-absorbing polyethylene terephthalate fibres used for ligament reconstruction...
December 2015: Knee
https://www.readbyqxmd.com/read/25998274/augmented-short-undersized-hamstring-tendon-graft-with-lars%C3%A2-artificial-ligament-versus-four-strand-hamstring-tendon-in-anterior-cruciate-ligament-reconstruction-preliminary-results
#4
F Hamido, H Al Harran, A R Al Misfer, T El Khadrawe, M G Morsy, A Talaat, A Elias, A Nagi
BACKGROUND: This retrospective study compares the results of reconstruction of isolated chronic anterior cruciate ligament rupture using augmented short undersized sized hamstring tendon graft with ligament advanced artificial reinforcement system (LARS) versus a four-strand hamstring tendon graft (4-SHG). Our hypothesis was that postoperative knee stability after using augmented short length or small diameter hamstring tendon graft with LARS artificial ligament could be significant and satisfactory more than 4-strand hamstring tendon graft group...
September 2015: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/25953226/editorial-commentary-synthetic-acl-grafts-are-more-important-than-clinical-nonbelievers-may-realize
#5
EDITORIAL
James H Lubowitz
Artificial ACL grafts are structural ties, designed to resist tension, but not designed to undergo biologic ligamentization by the host. Strategically, an artificial ACL graft may be used as reinforcement to augment ACL repair, ACL autograft, ACL allograft, or tissue-engineered ACL. Most artificial ACL grafts have had poor reported outcomes. However, the Ligament Augmentation and Reconstruction System (LARS) artificial ACL graft shows positive clinical outcomes.
May 2015: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/25633125/biomechanical-evaluation-of-four-femoral-fixation-configurations-in-a-simulated-anterior-cruciate-ligament-replacement-using-a-new-generation-of-ligament-advanced-reinforcement-system-lars%C3%A2-ac
#6
Olivier Barbier, Sandra Guérard, Philippe Boisrenoult, Patricia Thoreux
BACKGROUND: Recent improvements in manufacturing of biomaterials have made available a new generation of artificial ligaments with better biocompatibility and design that have led to a new interest in using them for ACL reconstructions. PURPOSE: To evaluate the biomechanical characteristics of four femoral fixations using a Ligament Advanced Reinforcement System (LARS™ AC; LARS, Arc sur Tille, France) for anterior cruciate ligament replacement. METHOD: Six femoral ACL fixations in four configurations using fresh calf femurs with an interference titanium screw inserted inside to outside, an interference titanium screw inserted outside to inside, an interference titanium screw inserted inside to outside with a staple and a new transversal cortical suspension device developed by LARS™ were compared in a static loading and failure test...
July 2015: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/25607412/thermographic-and-microscopic-evaluation-of-lars-knee-ligament-tearing
#7
Jenel Marian Pătraşcu, Mihaela Amarandei, Karla Noemy Kun, Ovidiu Borugă, Alina Totorean, Bogdan Andor, Sorin Florescu
Damage to knee articular ligaments causes important functional problems and adversely affects particularly the stability of the knee joint. Several methods were developed in order to repair damage to the anterior cruciate ligament (ACL), which employ autografts, allografts, as well as synthetic ligaments. One such synthetic scaffold, the ligament advanced reinforcement system (LARS) synthetic ligament is made of non-absorbing polyethylene terephthalate fibers whose structure allow tissue ingrowths in the intra-articular part, improving the stability of the joint...
2014: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/25508228/-clinical-effect-of-one-stage-arthroscopically-assisted-repair-and-reconstruction-for-posterolateral-dislocation-of-knee-joint-with-multiple-ligament-injuries
#8
Meng Wu, Li Gao, Ya-yi Xia, Shuan-ke Wang
OBJECTIVE: To evaluate clinical outcomes of anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) reconstruction under arthroscopy and repair of the injured posteromedial complex structure of the knee joint in the treatment of posterolateral knee dislocation with multiple ligament injuries. METHODS: From March 2008 to August 2012,22 patients (16 males and 6 females, ranging in age from 20 to 53 years old, with an average of 30.5 years old) with posterolateral dislocation of the knee were treated with primary reconstruction of ACL and PCL, combined with the repair of injuries in the posteromedial complex and soft-tissue...
August 2014: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/25464597/-clinical-effect-of-one-stage-arthroscopically-assisted-repair-and-reconstruction-for-posterolateral-dislocation-of-knee-joint-with-multiple-ligament-injuries
#9
Meng Wu, Li Gao, Ya-yi Xia, Shuan-ke Wang
OBJECTIVE: To evaluate clinical outcomes of anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) reconstruction under arthroscopy and repair of the injured posteromedial complex structure of the knee joint in the treatment of posterolateral knee dislocation with multiple ligament injuries. METHODS: From March 2008 to August 2012,22 patients (16 males and 6 females, ranging in age from 20 to 53 years old, with an average of 30.5 years old) with posterolateral dislocation of the knee were treated with primary reconstruction of ACL and PCL, combined with the repair of injuries in the posteromedial complex and soft-tissue...
August 2014: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/25381471/a-comparison-of-acute-and-chronic-anterior-cruciate-ligament-reconstruction-using-lars-artificial-ligaments-a-randomized-prospective-study-with-a-5-year-follow-up
#10
RANDOMIZED CONTROLLED TRIAL
Jia Chen, Aiqun Gu, Haitao Jiang, Wenjie Zhang, Xiangrong Yu
PURPOSE: This prospective randomized study compared acute and chronic anterior cruciate ligament (ACL) reconstruction using ligament advanced reinforcement system (LARS) artificial ligament in young active adults with a 5-year follow-up. METHODS: Fifty-five patients were enrolled in this study and divided into two groups based on the elapsed time between the injury and reconstruction: the acute group (3-7 weeks) and the chronic group (6-11 months). The clinical outcomes were evaluated using the Lysholm knee scoring scale, the Tegner activity rating, a KT-1000 Arthrometer, and the International Knee Documentation Committee (IKDC) scoring system...
January 2015: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/25376713/hamstring-tendon-autograft-versus-lars-artificial-ligament-for-arthroscopic-posterior-cruciate-ligament-reconstruction-in-a-long-term-follow-up
#11
COMPARATIVE STUDY
Xinxian Xu, Tingting Huang, Zhongtang Liu, Hong Wen, Luyou Ye, Yuezheng Hu, Huachen Yu, Xiaoyun Pan
INTRODUCTION: Surgical reconstruction has been increasingly recommended for the surgical management of posterior cruciate ligament (PCL) ruptures. While the choice of tissue graft still remains controversial. Currently both hamstring tendon autograft (HTG) and ligament advanced reinforcement system (LARS) artificial ligament are widely used but there are seldom reports on the comparisons of their clinical results. Our study was aimed to assess the effectiveness of these two grafts. MATERIALS AND METHODS: Thirty-five patients with unilateral PCL rupture were enrolled in this retrospectively study...
December 2014: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/24275759/artificial-ligament-reconstruction-of-sternoclavicular-joint-instability-report-of-a-novel-surgical-technique-with-early-results
#12
Jonathan M Quayle, Magnus W T Arnander, Richard G Pennington, Lt Philip Rosell
Symptomatic instability of the sternoclavicular (SC) joint is an uncommon problem. The majority of patients respond well to nonoperative measures, although a small number require reconstructive surgery for symptomatic instability, with varying surgical techniques reported in the literature. We report a series of 5 operations (in 4 patients) with chronic SC joint instability treated by reconstruction of SC and costoclavicular ligaments using an artificial ligament weave (LARS: Ligament Augmentation and Reconstruction System)...
March 2014: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/23812539/anterior-cruciate-ligament-reconstruction-with-lars%C3%A2-artificial-ligament-results-at-a-mean-follow-up-of-eight-years
#13
Paolo Domenico Parchi, Ciapini Gianluca, Lorenzo Dolfi, Alessandro Baluganti, Piolanti Nicola, Fabio Chiellini, Michele Lisanti
PURPOSE: The aim of this study was to review patients that underwent ACL reconstruction with the LARS™ ligament in the First Orthopaedic Division of Pisa University during the period between January 2003 and December 2005. METHODS: Twenty-six patients were reviewed with an average follow-up of 95.3 months (7.9 years). The review protocol was articulated in three phases: (1) a subjective evaluation using three grading scales: VAS, KOOS and the Cincinnati knee rating scale, (2) a clinical and objective evaluation, and (3) a biomechanical evaluation of the knee stability...
August 2013: International Orthopaedics
https://www.readbyqxmd.com/read/23812536/evaluation-of-the-coracoclavicular-reconstruction-using-lars-artificial-ligament-in-acute-acromioclavicular-joint-dislocation
#14
Nan Lu, Lei Zhu, Tianwen Ye, Aimin Chen, Xi Jiang, Zhiling Zhang, Qinghua Zhu, Qinghe Guo, Di Yang
PURPOSE: The most appropriate procedure for surgical treatment of severe acromioclavicular (AC) joint dislocation was still not clear. The purpose of this study is to evaluate the outcomes of coracoclavicular (CC) reconstruction with ligament augmentation and reconstruction system (LARS) artificial ligaments for the treatment of acute complete AC joint dislocation. METHODS: Twenty-four patients (16 male and 8 female, ages ranged from 21 to 45) with acute complete AC joint dislocations were treated with CC reconstruction using LARS artificial ligaments...
September 2014: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/23798650/polynass-bioactivation-of-lars-artificial-ligament-promotes-human-ligament-fibroblast-colonisation-in-vitro
#15
Soucounda Lessim, Véronique Migonney, Patricia Thoreux, Didier Lutomski, Sylvie Changotade
BACKGROUND: Introduction of a new generation of artificial ligaments for ACL reconstruction, the Ligament Augmentation and Reconstruction System (LARS), gives promising clinical results [1]. The current literature supports the use of LARS from short to medium term. To go even further to improve the biocompatibility of this biomaterial, poly(sodium styrene sulfonate) (polyNaSS) was grafted onto its surface. Studies using sheep animal model showed improvement of knee functionalities with this grafted artificial ligament and a better adhesion of human cell lines...
2013: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/23790438/the-effect-of-polystyrene-sodium-sulfonate-grafting-on-polyethylene-terephthalate-artificial-ligaments-on-in-vitro-mineralisation-and-in-vivo-bone-tissue-integration
#16
Cédryck Vaquette, Véronique Viateau, Sandra Guérard, Fani Anagnostou, Mathieu Manassero, David G Castner, Véronique Migonney
This study investigates the impact of polystyrene sodium sulfonate (PolyNaSS) grafting onto the osseo-integration of a polyethylene terephthalate artificial ligament (Ligament Advanced Reinforcement System, LARS™) used for Anterior Cruciate Ligament (ACL). The performance of grafted and non-grafted ligaments was assessed in vitro by culturing human osteoblasts under osteogenic induction and this demonstrated that the surface modification was capable of up-regulating the secretion of ALP and induced higher level of mineralisation as measured 6 weeks post-seeding by Micro-Computed Tomography...
September 2013: Biomaterials
https://www.readbyqxmd.com/read/23771532/arthroscopic-reconstruction-of-the-anterior-cruciate-ligament-with-the-lars-artificial-ligament-thirty-six-to-fifty-two-months-follow-up-study
#17
J X Ye, G S Shen, H B Zhou, W Xu, Z G Xie, Q R Dong, Y J Xu
OBJECTIVES: This study aims to analyze the operating methods and fundamental clinical effects of the reconstruction of the anterior cruciate ligament (ACL) with the Ligament Advancement Reinforcement System (LARS) artificial ligaments using an arthroscopy. PATIENTS AND METHODS: Fifty-three patients with ACL rupture who were treated using LARS artificial ligaments were enrolled in this retrospective study. The mean age at the time of reconstruction was 31.2 y (range, 22-51y)...
June 2013: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/23726110/biological-and-biomechanical-evaluation-of-the-ligament-advanced-reinforcement-system-lars-ac-in-a-sheep-model-of-anterior-cruciate-ligament-replacement-a-3-month-and-12-month-study
#18
Véronique Viateau, Mathieu Manassero, Fani Anagnostou, Sandra Guérard, David Mitton, Véronique Migonney
PURPOSE: The purposes of this study were to assess tissue ingrowth within the Ligament Advanced Reinforcement System (LARS) artificial ligament (LARS AC; LARS, Arc sur Tille, France) and to study the biomechanical characteristics of the reconstructed knees in a sheep model of anterior cruciate ligament (ACL) replacement. METHODS: Twenty-five female sheep underwent excision of the proximal third of the left ACL and intra-articular joint stabilization with a 44-strand polyethylene terephthalate ligament (mean ultimate tensile failure load, 2,500 N)...
June 2013: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/23543200/biomechanical-consequences-of-a-posterior-root-tear-of-the-lateral-meniscus-stabilizing-effect-of-the-meniscofemoral-ligament
#19
Philipp Forkel, Mirco Herbort, Martin Schulze, Dieter Rosenbaum, Lars Kirstein, Michael Raschke, Wolf Petersen
PURPOSE: The purpose of this study was to evaluate the effects of different types of lateral meniscus root tears in terms of tibiofemoral contact stress. METHODS: Ten porcine knees each underwent five different testing conditions with the menisci intact, a simulated lateral posterior root tear with and without cutting the meniscofemoral ligament and with an artificial tear of the posterior root of the medial meniscus. Biomechanical testing was performed at 30° of flexion with an axial load of 100 N...
May 2013: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/23412239/surgical-treatment-of-acromioclavicular-dislocation-with-lars-artificial-ligament
#20
S Giannotti, G Dell'osso, G Bugelli, N Cazzella, G Guido
The choice of the most appropriate procedure for surgical treatment of type IV-V and VI dislocations of the acromioclavicular joint according to Rockwood's classification has always been troublesome because of complications such as residual instability of the joint, delayed arthrosis of the A-C, delayed osteolysis of the clavicle, host intolerance towards artificial ligaments and because of the need of early mobilization of the affected limb. In our study, 17 male patients, ranging in age from 21 to 79 years and affected by A-C dislocation grade IV and V, both acute and chronic, underwent surgical reconstruction of the A-C joint capsule and extra-articular ligaments with ligament augmentation and reconstruction system (LARS) artificial ligament...
December 2013: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
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