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Anterolateral ligament of the knee

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https://www.readbyqxmd.com/read/28089495/assessment-of-the-isometry-of-the-anterolateral-ligament-in-a-3-dimensional-weight-bearing-computed-tomography-simulation
#1
Karl Wieser, Philipp Fürnstahl, Fabio Carrillo, Sandro F Fucentese, Lazaros Vlachopoulos
PURPOSE: To simulate the most isometric insertion points of the anterolateral ligament (ALL) in a weight-bearing 3-dimensional computed tomography (CT) model using previously published anatomic landmarks and to define radiographic landmarks, which make for an easier identification of the optimal insertion points. METHODS: The most isometric femoral insertion points were analyzed for 10 individuals, using data of weight-bearing CT scans in increasing knee flexion positions...
January 12, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28056513/is-an-anterolateral-ligament-reconstruction-required-in-acl-reconstructed-knees-with-associated-injury-to-the-anterolateral-structures
#2
Frank R Noyes, Lauren E Huser, Darin Jurgensmeier, James Walsh, Martin S Levy
BACKGROUND: The effect of an anterolateral ligament (ALL) reconstruction on rotational knee stability and corresponding anterior cruciate ligament (ACL) graft forces using multiple knee loading conditions including the pivot-shift phenomenon has not been determined. PURPOSE: First, to determine the rotational stability and ACL graft forces provided by an anatomic bone-patellar tendon-bone ACL reconstruction in the ACL-deficient knee alone and with an associated ALL/iliotibial band (ITB) injury...
January 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28027653/biomechanical-comparison-of-anterolateral-procedures-combined-with-anterior-cruciate-ligament-reconstruction
#3
Eivind Inderhaug, Joanna M Stephen, Andy Williams, Andrew A Amis
BACKGROUND: Anterolateral soft tissue structures of the knee have a role in controlling anterolateral rotational laxity, and they may be damaged at the time of anterior cruciate ligament (ACL) ruptures. PURPOSE: To compare the kinematic effects of anterolateral operative procedures in combination with intra-articular ACL reconstruction for combined ACL plus anterolateral-injured knees. STUDY DESIGN: Controlled laboratory study. METHODS: Twelve cadaveric knees were tested in a 6 degrees of freedom rig using an optical tracking system to record the kinematics through 0° to 90° of knee flexion with no load, anterior drawer, internal rotation, and combined loading...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28005166/anatomic-dissection-of-the-anterolateral-ligament-all-in-paired-fresh-frozen-cadaveric-knee-joints
#4
Philip P Roessler, Karl F Schüttler, Thomas Stein, Sascha Gravius, Thomas J Heyse, Andreas Prescher, Dieter C Wirtz, Turgay Efe
INTRODUCTION: Different dissection studies as well as comparative studies about the anterolateral ligament of the knee (ALL) already exist and the structure's topology and properties have been shown. However, most of the studies investigating the ligament were performed in embalmed knees, which is thought to change the structural integrity of ligaments and thus the topologic and dynamic measurements. Since the biomechanical function of the ALL is not fully understood until today and a correlation with the pivot shift phenomenon is yet speculative, further studies will have to clarify its definitive importance...
December 22, 2016: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28005093/ultrasound-guided-percutaneous-reconstruction-of-the-anterolateral-ligament-surgical-technique-and-case-report
#5
Alan M Hirahara, Wyatt J Andersen
The first noted description of the anterolateral ligament (ALL) is often attributed to Dr. Paul Segond (1879). Segond described a "fibrous, pearly band showing extreme amounts of tension during forced internal rotation" that was responsible for an avulsion at the lateral aspect of the proximal tibia. In 2013, Dr. Steven Claes confirmed the presence of the ALL as the band of tissue detailed by Segond. Recent biomechanical studies have shown that the ALL is a vital stabilizer during internal rotation of the knee...
November 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28003069/editorial-commentary-the-anterolateral-ligament-of-the-knee-seems-more-fact-than-fiction
#6
EDITORIAL
Jüri-Toomas Kartus
It seems like the anterolateral ligament of the knee both exists and, furthermore, is beneficial to repair during anterior cruciate ligament surgery.
January 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27990614/anatomical-variation-in-the-anterolateral-ligament-of-the-knee-and-a-new-dissection-technique-for-embalmed-cadaveric-specimens
#7
Matthew Parker, Heather F Smith
Claes et al. recently documented and described the anterolateral ligament (ALL) of the knee, demonstrating its existence in 97% of their samples. Here, we further examined the anatomy of this ligament, documented its morphological variation, and assessed the feasibility of its dissection in preserved cadaveric specimens. To achieve this, we dissected 53 preserved cadaveric knees and documented their morphological variation in the anterolateral ligament. The originally described dissection technique for identifying and following the ALL requires flexion of the knee, a state which is often not possible in stiff, preserved cadavers...
December 18, 2016: Anatomical Science International
https://www.readbyqxmd.com/read/27964969/anterolateral-ligament-and-iliotibial-band-control-of-rotational-stability-in-the-anterior-cruciate-ligament-intact-knee-defined-by-tibiofemoral-compartment-translations-and-rotations
#8
Lauren E Huser, Frank R Noyes, Darin Jurgensmeier, Martin S Levy
PURPOSE: To determine the stabilizing effect of the anterolateral ligament (ALL) and iliotibial band (ITB) in resisting internal tibial rotation limits and anterior subluxations of the tibiofemoral compartments in anterior cruciate ligament (ACL)-intact knees during anterior drawer, internal rotation, and under 2 different 4-degree-of-freedom pivot-shift conditions. METHODS: A 6-degree-of-freedom robotic simulator tested 19 fresh-frozen cadaver specimens with 3 testing conditions: intact, ALL- or ITB-sectioned (random), and both ALL and ITB sectioned...
December 10, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27932332/the-anterolateral-capsule-of-the-knee-behaves-like-a-sheet-of-fibrous-tissue
#9
Daniel Guenther, Amir A Rahnemai-Azar, Kevin M Bell, Sebastián Irarrázaval, Freddie H Fu, Volker Musahl, Richard E Debski
BACKGROUND: The function of the anterolateral capsule of the knee has not been clearly defined. However, the contribution of this region of the capsule to knee stability in comparison with other anterolateral structures can be determined by the relative force that each structure carries during loading of the knee. PURPOSE/HYPOTHESIS: The purpose of this study was to determine the forces in the anterolateral structures of the intact and anterior cruciate ligament (ACL)-deficient knee in response to an anterior tibial load and internal tibial torque...
December 8, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27928215/anatomic-anterolateral-ligament-reconstruction-improves-postoperative-clinical-outcomes-combined-with-anatomic-anterior-cruciate-ligament-reconstruction
#10
Hua Zhang, Man Qiu, Aiguo Zhou, Jian Zhang, Dianming Jiang
A significant cohort of patients is plagued by postoperative rotational instability after the anatomic anterior cruciate ligament (ACL) reconstruction surgery. Anatomic anterolateral ligament (ALL) reconstruction was performed in this study with the aim to assess the clinical role of ALL in knee's stability and joint functions. Sixty patients were recruited and divided into three groups to perform the operations of anatomic single-bundle ACL reconstruction, anatomic double-bundle ACL reconstruction, and anatomic single-bundle ACL reconstruction + anterolateral ligament reconstruction, respectively...
December 2016: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/27916189/editorial-commentary-lateral-extra-articular-reconstructions-with-anterior-cruciate-ligament-surgery-are-these-operative-procedures-supported-by-in%C3%A2-vitro-biomechanical-studies
#11
EDITORIAL
Frank R Noyes
There remains controversy on the role of a concurrent lateral extra-articular procedure with anterior cruciate ligament (ACL) reconstruction. Previous biomechanical studies often are historical and inconclusive. Studies show the anterolateral ligament and iliotibial band are secondary restraints and, when injured in conjunction with the ACL, produce gross (Grade 3) pivot-shift subluxations. Recent robotic studies show a well-placed bone-patellar tendon-bone reconstruction does restore time-zero kinematics with a negative pivot-shift...
December 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27880849/loading-patterns-of-the-posterior-cruciate-ligament-in-the-healthy-knee-a-systematic-review
#12
S H Hosseini Nasab, Renate List, Katja Oberhofer, Sandro F Fucentese, Jess G Snedeker, William R Taylor
BACKGROUND: The posterior cruciate ligament (PCL) is the strongest ligament of the knee, serving as one of the major passive stabilizers of the tibio-femoral joint. However, despite a number of experimental and modelling approaches to understand the kinematics and kinetics of the ligament, the normal loading conditions of the PCL and its functional bundles are still controversially discussed. OBJECTIVES: This study aimed to generate science-based evidence for understanding the functional loading of the PCL, including the anterolateral and posteromedial bundles, in the healthy knee joint through systematic review and statistical analysis of the literature...
2016: PloS One
https://www.readbyqxmd.com/read/27871655/surgical-indications-and-technique-for-anterior-cruciate-ligament-reconstruction-combined-with-lateral-extra-articular-tenodesis-or-anterolateral-ligament-reconstruction
#13
REVIEW
Bart Vundelinckx, Benjamin Herman, Alan Getgood, Robert Litchfield
After anterior cruciate ligament (ACL) rupture, anteroposterior and rotational laxity in the knee causes instability, functional symptoms, and damage to other intra-articular structures. Surgical reconstruction aims to restore the stability in the knee, and to improve function and ability to participate in sports. It also protects cartilage and menisci from secondary injuries. Because of persistent rotational instability after ACL reconstruction, combined intra-articular and extra-articular procedures are more commonly performed...
January 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27859544/lateral-soft-tissue-structures-contribute-to-cruciate-retaining-total-knee-arthroplasty-stability
#14
Kiron K Athwal, Hadi El Daou, Breck Lord, Andrew J Davies, William Manning, Ferdinando Rodriguez Y Baena, David J Deehan, Andrew A Amis
Little information is available to surgeons regarding how the lateral structures prevent instability in the replaced knee. The aim of this study was to quantify the lateral soft-tissue contributions to stability following cruciate-retaining total knee arthroplasty (CR TKA). Nine cadaveric knees were tested in a robotic system at full extension, 30°, 60°, and 90° flexion angles. In both native and CR implanted states, ±90 N anterior-posterior force, ±8 Nm varus-valgus, and ±5 Nm internal-external torque were applied...
November 9, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27847860/morphology-of-anterolateral-ligament-of-the-knee-a-cadaveric-observation-with-clinical-insight
#15
Bhagath Kumar Potu, Abdel Halim Salem, Marwan F Abu-Hijleh
Background. The morphology and function of anterolateral ligament (ALL) of the knee are not clearly understood even today with all the sophisticated techniques available. There have been differing descriptions of the ALL of the knee in literature, and not all of them have been named or described clearly. Aim. The present study was undertaken to provide a clear structure/relationship description on ALL. Materials and Methods. We used 24 formalin-fixed cadaveric limbs. Knee regions of the all the limbs were neatly dissected and the ALL was exposed...
2016: Advances in Medicine
https://www.readbyqxmd.com/read/27843134/effect-of-posterior-cruciate-ligament-rupture-on-biomechanical-and-histological-features-of-lateral-femoral-condyle
#16
Zhenhan Deng, Yusheng Li, Hong Liu, Kanghua Li, Guanghua Lei, Bangbao Lu
BACKGROUND The aim of this study was to investigate bone mineral density (BMD) and the biomechanical and histological effects of posterior cruciate ligament (PCL) rupture on the lateral femoral condyle. MATERIAL AND METHODS Strain on different parts of the lateral femoral condyle from specimens of normal adult knee joints, including 12 intact PCLs, 6 ruptures of the anterolateral bundle, 6 ruptures of the postmedial bundle, and 12 complete ruptures, was tested when loaded with different loads on the knee at various flexion angles...
November 15, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27798791/anterolateral-ligament-of-the-knee-shows-variable-anatomy-in-pediatric-specimens
#17
Kevin G Shea, Matthew D Milewski, Peter C Cannamela, Theodore J Ganley, Peter D Fabricant, Elizabeth B Terhune, Alexandra C Styhl, Allen F Anderson, John D Polousky
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction failure rates are highest in youth athletes. The role of the anterolateral ligament in rotational knee stability is of increasing interest, and several centers are exploring combined ACL and anterolateral ligament reconstruction for these young patients. Literature on the anterolateral ligament of the knee is sparse in regard to the pediatric population. A single study on specimens younger than age 5 years demonstrated the presence of the anterolateral ligament in only one of eight specimens; therefore, much about the prevalence and anatomy of the anterolateral ligament in pediatric specimens remains unknown...
October 31, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27729320/overlap-between-anterior-cruciate-ligament-and-anterolateral-meniscal-root-insertions-a-scanning-electron-microscopy-study
#18
Brett D Steineman, Samuel G Moulton, Tammy L Haut Donahue, Cristián A Fontboté, Christopher M LaPrade, Tyler R Cram, Chase S Dean, Robert F LaPrade
BACKGROUND: The anterolateral meniscal root (ALMR) has been reported to intricately insert underneath the tibial insertion of the anterior cruciate ligament (ACL). Previous studies have begun to evaluate the relationship between the insertion areas and the risk of iatrogenic injuries; however, the overlap of the insertions has yet to be quantified in the sagittal and coronal planes. PURPOSE: To investigate the insertions of the human tibial ACL and ALMR using scanning electron microscopy (SEM) and to quantify the overlap of the ALMR insertion in the coronal and sagittal planes...
October 11, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27709038/bicruciate-knee-ligament-reconstruction-using-4-all-anterior-arthroscopic-portals
#19
Robert Petretta, Vipul Mandalia
The use of an accessory posteromedial portal for posterior cruciate ligament reconstruction in bicruciate knee ligament reconstruction has often been described. However, the use of a posteromedial portal can be time consuming and has some inherent risks including injury to the saphenous vein or nerve. We describe our bicruciate knee ligament reconstruction using 4 exclusively anterior portals including a high anteromedial, high anterolateral, low anteromedial, and low anterolateral portals. Arthroscopy is performed using a combination of 30° and 70° arthroscopes...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27709023/percutaneous-reconstruction-of-the-anterolateral-ligament-of-the-knee-with-a-polyester-tape
#20
Ahmad M Wagih, Ahmed M F Elguindy
Recent advances in surgeons' understanding of the anatomic, biomechanical, and radiologic features of the anterolateral ligament (ALL) of the knee have led to an increased interest in reconstruction of this structure as part of the management of knee instability. Even without any technical flaws and proper positioning of the bone tunnels, there is a small subset of patients, approximately 7% of all patients, who experience some residual anterolateral rotational instability after anterior cruciate ligament reconstruction...
August 2016: Arthroscopy Techniques
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