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https://www.readbyqxmd.com/read/28633185/erratum-the-prevalence-of-cruciate-ligament-and-meniscus-knee-injury-in-young-adults-and-associations-with-gender-body-mass-index-and-height-a-large-cross-sectional-study
#1
Ran Thein, Oded Hershkovich, Barak Gordon, Gideon Burstein, Shay Tenenbaum, Estela Derazne, Dorit Tzur, Ari Shamis, Arnon Afek, Yitshak Kreiss
No abstract text is available yet for this article.
June 20, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28632776/dynamic-knee-valgus-alignment-influences-impact-attenuation-in-the-lower-extremity-during-the-deceleration-phase-of-a-single-leg-landing
#2
Akihiro Tamura, Kiyokazu Akasaka, Takahiro Otsudo, Jyunya Shiozawa, Yuka Toda, Kaori Yamada
Dynamic knee valgus during landings is associated with an increased risk of non-contact anterior cruciate ligament (ACL) injury. In addition, the impact on the body during landings must be attenuated in the lower extremity joints. The purpose of this study was to investigate landing biomechanics during landing with dynamic knee valgus by measuring the vertical ground reaction force (vGRF) and angular impulses in the lower extremity during a single-leg landing. The study included 34 female college students, who performed the single-leg drop vertical jump...
2017: PloS One
https://www.readbyqxmd.com/read/28632053/the-effect-of-a-secondary-cognitive-task-on-landing-mechanics-and-jump-performance
#3
Boyi Dai, Ross F Cook, Elizabeth A Meyer, Yvonne Sciascia, Taylour J Hinshaw, Chaoyi Wang, Qin Zhu
Anterior cruciate ligament (ACL) injuries commonly occur during jump-landing tasks when individuals' attention is simultaneously allocated to other objects and tasks. The purpose of the current study was to investigate the effect of allocation of attention imposed by a secondary cognitive task on landing mechanics and jump performance. Thirty-eight recreational athletes performed a jump-landing task in three conditions: no counting, counting backward by 1 s from a randomly given number, and counting backward by 7 s from a randomly given number...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28632046/targeting-associated-mechanisms-of-anterior-cruciate-ligament-injury-in-female-community-level-athletes
#4
Jonathan M D Staynor, Joanna C Nicholas, Gillian Weir, Jacqueline A Alderson, Cyril J Donnelly
This study aims to determine if biomechanically informed injury prevention training can reduce associated factors of anterior cruciate ligament injury risk among a general female athletic population. Female community-level team sport athletes, split into intervention (n = 8) and comparison groups (n = 10), completed a sidestepping movement assessment prior to and following a 9-week training period, in which kinetic, kinematic and neuromuscular data were collected. The intervention group completed a biomechanically informed training protocol, consisting of plyometric, resistance and balance exercises, adjunct to normal training, for 15-20 min twice a week...
February 24, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28631112/risk-of-revision-was-not-reduced-by-a-double-bundle-acl-reconstruction-technique-results-from-the-scandinavian-registers
#5
Cathrine Aga, Jüri-Tomas Kartus, Martin Lind, Stein Håkon Låstad Lygre, Lars-Petter Granan, Lars Engebretsen
BACKGROUND: Double-bundle anterior cruciate ligament (ACL) reconstruction has demonstrated improved biomechanical properties and moderately better objective outcomes compared with single-bundle reconstructions. This could make an impact on the rerupture rate and reduce the risk of revisions in patients undergoing double-bundle ACL reconstruction compared with patients reconstructed with a traditional single-bundle technique. The National Knee Ligament Registers in Scandinavia provide information that can be used to evaluate the revision outcome after ACL reconstructions...
June 19, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28630584/time-loss-injuries-in-sub-elite-and-emerging-rugby-league-players
#6
Mark Booth, Rhonda Orr
This study aimed to 1) investigate the incidence and characteristics of injuries in emerging rugby league players; and 2) explore the differences in injury incidence and characteristics between the various sub-elite competitions. An NRL emerging player development squad (n = 34) was observed from the beginning of pre-season until the finish of competition. Time-loss injury was defined as any physical pain or impairment sustained that resulted in players missing a match. Injuries were categorised according to circumstance, incidence, characteristics, playing position and competition level...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28628800/increased-internal-femoral-torsion-can-be-regarded-as-a-risk-factor-for-patellar-instability-a-biomechanical-study
#7
Peter Kaiser, Werner Schmoelz, Philip Schoettle, Marit Zwierzina, Christian Heinrichs, Rene Attal
BACKGROUND: Increased internal femoral torsion is regarded as a risk factor for patellar instability. Biomechanical investigations confirming this hypothesis are missing. METHODS: Eight fresh-frozen cadaver knees were tested on a specially designed simulator. Patellar motion and patellofemoral pressure were evaluated for 0°, 10°, and 20° of increased internal and external femoral torsion with native and with transected medial patellofemoral ligaments used to simulate patellar instability...
June 10, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28619022/effect-of-low-magnitude-different-frequency-whole-body-vibration-on-subchondral-trabecular-bone-microarchitecture-cartilage-degradation-bone-cartilage-turnover-and-joint-pain-in-rabbits-with-knee-osteoarthritis
#8
Wang Junbo, Liu Sijia, Chen Hongying, Liu Lei, Wang Pu
BACKGROUD: Whole-body vibration(WBV) has been suggested for the prevention of subchondral bone loss of knee osteoarthritis (OA) . This study examined the effects of different frequency of whole-body vibration on subchondral trabecular bone microarchitecture, cartilage degradation and metabolism of the tibia and femoral condyle bone, and joint pain in an anterior cruciate ligament transection (ACLT)-induced knee osteoarthritisrabbit model. METHOD: Ninety adult rabbits were divided into six groups: all groups received unilateral ACLT; Group 1, ACLT only; Group 2, 5 Hz WBV; Group 3, 10 Hz WBV; Group 4, 20 Hz WBV; Group 5, 30 Hz WBV; and Group 6, 40 Hz WBV...
June 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28617518/tibiofemoral-instability-after-primary-total-knee-arthroplasty-posterior-stabilized-implants-for-obese-patients
#9
Ata Can, Fahri Erdogan, Ayse Ovul Erdogan
Tibiofemoral instability is a common complication after total knee arthroplasty (TKA), accounting for up to 22% of all revision procedures. Instability is the second most common cause of revision in the first 5 years after primary TKA. In this study, 13 knees with tibiofemoral instability after TKA were identified among 693 consecutive primary TKA procedures. Patient demographics, body mass index, clinical symptoms, previous deformity, previous knee surgery, complications, interval between index TKA and first tibiofemoral instability, causes of instability, and interval between index TKA and revision TKA were retrospectively reviewed...
June 15, 2017: Orthopedics
https://www.readbyqxmd.com/read/28616652/effects-of-initial-graft-tension-on-femoral-tunnel-widening-after-anatomic-anterior-cruciate-ligament-reconstruction-using-a-bone-patellar-tendon-bone-graft
#10
Shuji Taketomi, Hiroshi Inui, Keitaro Tahara, Nobuyuki Shirakawa, Sakae Tanaka, Takumi Nakagawa
INTRODUCTION: The effects of initial graft tension upon tunnel widening (TW) following anatomic anterior cruciate ligament (ACL) reconstruction have not been elucidated. The purpose of this study was to retrospectively investigate the effect of two different graft-tensioning protocols upon femoral TW following anatomic ACL reconstruction using a bone-patellar tendon-bone (BPTB) graft and a three-dimensional (3D) computed tomography (CT) model. METHODS: Forty-three patients who underwent isolated ACL reconstruction using BPTB grafts were included in this study...
June 14, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28615820/from-wheelchair-to-walking-first-case-report-of-post-electrical-burn-destruction-of-patellar-ligament-with-its-one-stage-reconstruction-and-restoration-of-function
#11
Sandip Kanti Basu, Jayanta Bain, Bijay Kumar Majumdar, Debarati Chattopadhyay, Debasis Baitalik, Yatindra Kumar Dewangan, Debtanu Bhattacharya, Pritha Rakshit, Vivek Gupta, Ashwani Kumar, Rathindra Nath Haldar
Electrical burn injury causing bilateral patellar ligament destruction leading to complete loss of knee extension is a very rare injury. In such situation, surgical repair or reconstruction of the patellar ligament becomes necessary to restore knee functions. Here, we present such a case of an 8-year-old boy, whose both patellar ligaments were destroyed throughout its length due to high-voltage electrical injury. His left knee joint cavity was exposed and grossly infected, but the right knee joint cavity was apparently intact...
January 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28615108/kinematics-of-different-components-of-the-posterolateral-corner-of-the-knee-in-the-lateral-collateral-ligament-intact-state-a-human-cadaveric%C3%A2-study
#12
Christoph Domnick, Karl-Heinz Frosch, Michael J Raschke, Nils Vogel, Martin Schulze, Mathias von Glahn, Tobias C Drenck, Mirco Herbort
PURPOSE: To determine the static stabilizing effects of different anatomical structures of the posterolateral corner (PLC) of the knee in the lateral collateral ligament (LCL)-intact state. METHODS: Thirteen fresh-frozen human cadaveric knees were dissected and tested using an industrial robot with an optical tracking system. Kinematics were determined for 134 N anterior/posterior loads, 10 N m valgus/varus loads, and 5 N m internal/external rotatory loads in 0°, 20°, 30°, 60°, and 90° of knee flexion...
June 11, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28614288/evaluation-of-the-tibial-tubercle-to-posterior-cruciate-ligament-distance-in-a-pediatric-patient-population
#13
Blake Clifton, Dustin L Richter, Dan Tandberg, Matthew Ferguson, Gehron Treme
BACKGROUND: Evaluation of distal extensor mechanism alignment continues to evolve in children with patella instability. Prior studies support the use of the tibial tubercle to trochlear groove (TT-TG) distance but limitations exist for this measurement including: changes in the TT-TG distance with knee flexion, difficulty with finding the deepest part of a dysplastic trochlea, and limitations regarding identification of the site of the anatomic abnormality. The tibial tubercle-posterior cruciate ligament (TT-PCL) distance has been introduced as an alternative measure to address the shortcomings in the TT-TG distance by quantifying the position of the TT independent of the trochlea and with respect to the tibia only...
June 13, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28612204/three-dimensional-isotropic-magnetic-resonance-imaging-can-provide-a-reliable-estimate-of-the-native-anterior-cruciate-ligament-insertion-site-anatomy
#14
Daisuke Araki, Eric Thorhauer, Scott Tashman
PURPOSE: This study quantified the error in anterior cruciate ligament (ACL) insertion site location and area estimated from three-dimensional (3D) isotropic magnetic resonance imaging (MRI) by comparing to native insertion sites determined via 3D laser scanning. METHODS: Isotropic 3D DESS MRI was acquired from twelve fresh-frozen, ACL-intact cadaver knees. ACL insertion sites were manually outlined in each MRI slice, and the resulting contours combined to determine the 3D insertion site shape...
June 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28610875/identification-and-risk-estimation-of-movement-strategies-during-cutting-maneuvers
#15
Sina David, Igor Komnik, Markus Peters, Johannes Funken, Wolfgang Potthast
OBJECTIVES: Approximately 70% of anterior cruciate ligament (ACL) injuries occur in non-contact situations during cutting and landing maneuvers. Parameters such as footstrike patterns and trunk orientation were found to influence ACL relevant knee loading, however, the relationship between the whole body movement and injury risk is debated. This study identifies whole body movement strategies that increase injury risk, and provides training recommendations to reduce this risk or enable a save return to sports after injury...
May 25, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28610433/reoperation-rates-after-combined-anterior-cruciate-ligament-and-anterolateral-ligament-reconstruction-a-series-of-548-patients-from-the-santi-study-group-with-a-minimum-follow-up-of-2-years
#16
Mathieu Thaunat, Gilles Clowez, Adnan Saithna, Maxime Cavalier, Eric Choudja, Thais D Vieira, Jean-Marie Fayard, Bertrand Sonnery-Cottet
BACKGROUND: Early clinical results of anterolateral ligament (ALL) reconstruction are promising, but concerns exist due to high rates of complications after other types of lateral extra-articular tenodesis. The rate of surgery after combined anterior cruciate ligament (ACL) and ALL reconstruction is not known. PURPOSE: To determine the rate of reoperation after combined ACL and ALL reconstruction. STUDY DESIGN: Case series; Level of evidence, 4...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28609131/a-comprehensive-reanalysis-of-the-distal-iliotibial-band-quantitative-anatomy-radiographic-markers-and-biomechanical-properties
#17
Jonathan A Godin, Jorge Chahla, Gilbert Moatshe, Bradley M Kruckeberg, Kyle J Muckenhirn, Alexander R Vap, Andrew G Geeslin, Robert F LaPrade
BACKGROUND: The qualitative anatomy of the distal iliotibial band (ITB) has previously been described. However, a comprehensive characterization of the quantitative anatomic, radiographic, and biomechanical properties of the Kaplan fibers of the deep distal ITB has not yet been established. It is paramount to delineate these characteristics to fully understand the distal ITB's contribution to rotational knee stability. Purpose/Hypothesis: There were 2 distinct purposes for this study: (1) to perform a quantitative anatomic and radiographic evaluation of the distal ITB's attachment sites and their relationships to pertinent osseous and soft tissue landmarks, and (2) to quantify the biomechanical properties of the deep (Kaplan) fibers of the distal ITB...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28608727/osteoarthritis-of-the-anterior-cruciate-ligament-and-medial-tibial-plateau-a-cadaveric-study
#18
Jessica Immonen, Chris Siefring, Luke Sanders
The objective of this study was to analyze morphometric anatomy and damages with aging in cadaveric knee specimens specific to the cruciate ligaments, the articular cartilage of the tibial plateau, and the menisci. Morphometric analyses to cadaveric anatomy of the knee were performed using Image-Pro® software on 3 age populations: <70 years old, 70 to 79 years old, and ≥80 years old. An average thickness of the cruciate ligaments was assessed with 5 circumferential measurements per specimen using nylon thread...
June 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28608618/bench-to-bedside-bridge-enhanced-anterior-cruciate-ligament-repair
#19
REVIEW
Gabriel S Perrone, Benedikt L Proffen, Ata M Kiapour, Jakob T Sieker, Braden C Fleming, Martha M Murray
Anterior cruciate ligament (ACL) injuries are one of the most well-known orthopaedic injuries and are treated with one of the most common orthopaedic procedures performed in the United States. This surgical procedure, ACL reconstruction, is successful at restoring the gross stability of the knee. However, the outcomes of ACL reconstruction can be limited by short and long term complications, including muscle weakness, graft rupture and premature osteoarthritis. Thus, new methods of treating this injury are being explored...
June 13, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28608009/clinical-outcomes-of-extra-articular-tenodesis-anterolateral-reconstruction-in-the-acl-injured-knee
#20
REVIEW
Bertrand Sonnery-Cottet, Nuno Camelo Barbosa, Thais Dutra Vieira, Adnan Saithna
PURPOSE: The role of concomitant extra-articular procedures in improving the outcome of ACL reconstruction has experienced a recent resurgence in interest. The aim of this article is to highlight the differences in philosophies and outcomes of historical lateral extra-articular tenodesis (LET) and contemporary, anterolateral reconstruction. METHODS: A narrative review was performed using PubMed/MEDLINE using the keywords "lateral extra-articular tenodesis" and "anterolateral ligament reconstruction"...
June 12, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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