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https://www.readbyqxmd.com/read/28324994/co-activation-periods-of-gastrocnemius-and-vastus-lateralis-during-walking-evaluated-by-surface-electromyography
#1
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/28321478/the-anterolateral-complex-in-anterior-cruciate-ligament-deficient-knees-demonstrate-sonographic-abnormalities-on-high-resolution-sonography
#2
Masahito Yoshida, Elmar Herbst, Macio Albers, Volker Musahl, Freddie H Fu, Kentaro Onishi
PURPOSE: The presence of anterolateral ligament of the knee is still controversial, and some physicians prefer to call this structure anterolateral complex (ALC) to infer plural nature of structures involved. The purpose of this study was to describe the scanning techniques and to classify various sonographic appearances of the tibial-side ALC of the knee in subjects with anterior cruciate ligament (ACL) injury. It was hypothesized that sonographic abnormity of the ALC would be associated with ACL injury history...
March 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28321429/intermediate-to-long-term-results-of-combined-anterior-cruciate-ligament-reconstruction-and-autologous-chondrocyte-implantation
#3
Andrew N Pike, Tim Bryant, Takahiro Ogura, Tom Minas
BACKGROUND: Cartilage injury associated with anterior cruciate ligament (ACL) ruptures is common; however, relatively few reports exist on concurrent cartilage repair with ACL reconstruction. Autologous chondrocyte implantation (ACI) has been utilized successfully for treatment of moderate to large chondral defects. HYPOTHESIS: ACL insufficiency with relatively large chondral defects may be effectively managed with concurrent ACL reconstruction and ACI. STUDY DESIGN: Case series; Level of evidence, 4...
February 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28320209/anterolateral-ligament-of-the-knee-anatomy-function-imaging-and-treatment
#4
Ronak M Patel, Robert H Brophy
The anterolateral ligament (ALL) of the knee has gained attention recently for its potential role in rotational stability of the knee, especially in association with anterior cruciate ligament (ACL) injuries. Anatomic studies have characterized the ALL as it runs in an anteroinferior and oblique direction from the lateral distal femur to the anterolateral proximal tibia, although the prevalence and variance of this ligament are not well understood. Magnetic resonance imaging and ultrasound have identified the ligament and linked it with the classically described Segond fracture...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28318538/dynamic-intraligamentary-stabilization-versus-conventional-acl-reconstruction-a-matched-study-on-return-to-work
#5
Kathrin S Bieri, Stefan M Scholz, Sandro Kohl, Emin Aghayev, Lukas P Staub
PURPOSE: The dynamic intraligamentary stabilization (DIS) technique is based on a different treatment approach than ACL reconstruction in that it intends to promote self-healing of the ligament. It is only recommended for acute injuries (<21days). The purpose of the present study was to compare DIS and ACLR with respect to the extent of work incapacity, revision rates, secondary arthroscopies, and treatment costs during recovery. METHODS: The study was a post-hoc analysis of prospectively collected data in the Swiss National Accident Insurance Fund (SUVA) database...
March 7, 2017: Injury
https://www.readbyqxmd.com/read/28314888/youtube-provides-poor-information-regarding-anterior-cruciate-ligament-injury-and-reconstruction
#6
J T Cassidy, E Fitzgerald, E S Cassidy, M Cleary, D P Byrne, B M Devitt, J F Baker
PURPOSE: YouTube is a global medium used predominantly by young adults (aged 18-49 years). This study examined the quality of YouTube information regarding ACL injury and reconstruction. METHODS: YouTube was searched on the 13th of June 2015 for "ACL" and "anterior cruciate ligament" with/without associated terms of "injury", "reconstruction", and "surgery". Videos were evaluated by two independent reviewers [EF (Reviewer 1), (Reviewer 2)] using two recognized information scoring systems (Modified DISCERN (MD) 0-5 and JAMA Benchmark 0-4) and an adaptation of a score designed for written ACL information [ACL Specific Score (ASS) 0-25]...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28314886/no-differences-in-subjective-knee-function-between-surgical-techniques-of-anterior-cruciate-ligament-reconstruction-at-2-year-follow-up-a-cohort-study-from-the-swedish-national-knee-ligament-register
#7
Eric Hamrin Senorski, David Sundemo, Christopher D Murawski, Eduard Alentorn-Geli, Volker Musahl, Freddie Fu, Neel Desai, Anders Stålman, Kristian Samuelsson
PURPOSE: The purpose of this study was to investigate how different techniques of single-bundle anterior cruciate ligament (ACL) reconstruction affect subjective knee function via the Knee injury and Osteoarthritis Outcome Score (KOOS) evaluation 2 years after surgery. It was hypothesized that the surgical techniques of single-bundle ACL reconstruction would result in equivalent results with respect to subjective knee function 2 years after surgery. METHODS: This cohort study was based on data from the Swedish National Knee Ligament Register during the 10-year period of 1 January 2005 through 31 December 2014...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28302427/association-between-tibial-plateau-slopes-and-anterior-cruciate-ligament-injury-a-meta-analysis
#8
Yi-Lun Wang, Tuo Yang, Chao Zeng, Jie Wei, Dong-Xing Xie, Yuan-Heng Yang, Hui-Zhong Long, Bei Xu, Yu-Xuan Qian, Shi-de Jiang, Guang-Hua Lei
PURPOSE: To investigate the associations of medial tibial plateau slope (MTPS), lateral tibial plateau slope (LTPS), and coronal tibial plateau slope (CTPS) with anterior cruciate ligament (ACL) injury both in the general population and in different gender subgroups. METHODS: PubMed, Ovid, Embase, and Scopus databases were searched through from inception to August 31, 2016. Observational studies reporting associations of MTPS/LTPS/CTPS with ACL injury were retrieved for analysis...
March 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28299389/adolescents-and-female-patients-are-at-increased-risk-for-contralateral-anterior-cruciate-ligament-reconstruction-a-cohort-study-from-the-swedish-national-knee-ligament-register-based-on-17-682-patients
#9
Thorkell Snaebjörnsson, Eric Hamrin Senorski, David Sundemo, Eleonor Svantesson, Olof Westin, Volker Musahl, Eduard Alentorn-Geli, Kristian Samuelsson
PURPOSE: The impact of different surgical techniques in index ACL reconstruction for patients undergoing contralateral ACL reconstruction was investigated. METHODS: The study was based on data from the Swedish National Knee Ligament Register. Patients undergoing index ACL reconstruction and subsequent contralateral ACL reconstruction using hamstring graft under the study period were included. The following variables were evaluated: age at index surgery, gender, concomitant meniscal or cartilage injury registered at index injury, transportal femoral bone tunnel drilling and transtibial femoral bone tunnel drilling...
March 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28298067/incidence-of-second-anterior-cruciate-ligament-tears-1990-2000-and-associated-factors-by-geographic-locale
#10
Nathan D Schilaty, Nathaniel A Bates, Thomas L Sanders, Aaron J Krych, Michael J Stuart, Timothy E Hewett
BACKGROUND: Second anterior cruciate ligament (ACL) tears after reconstruction occur at a reported rate of 20% to 30%. This high frequency indicates that there may be factors that predispose an athlete to graft failure and ACL tears of the contralateral knee. PURPOSE: To determine the incidence of second ACL injuries in a geographic population-based cohort over a 10-year observation period. STUDY DESIGN: Descriptive epidemiological study. METHODS: International Classification of Diseases, 9th Revision (ICD-9) codes relevant to the diagnosis of an ACL tear and the procedure code for ACL reconstruction were searched across the Rochester Epidemiology Project, a multidisciplinary county database, between the years of 1990 and 2000...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28298066/effect-of-fatigue-protocols-on-lower-limb-neuromuscular-function-and-implications-for-anterior-cruciate-ligament-injury-prevention-training
#11
Sue D Barber-Westin, Frank R Noyes
BACKGROUND: Approximately two-thirds of anterior cruciate ligament (ACL) tears are sustained during noncontact situations when an athlete is cutting, pivoting, decelerating, or landing from a jump. Some investigators have postulated that fatigue may result in deleterious alterations in lower limb biomechanics during these activities that could increase the risk of noncontact ACL injuries. However, prior studies have noted a wide variation in fatigue protocols, athletic tasks studied, and effects of fatigue on lower limb kinetics and kinematics...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28298053/passive-anterior-tibial-subluxation-in-the-setting-of-anterior-cruciate-ligament-injuries
#12
Lucas S McDonald, Jelle P van der List, Kristofer J Jones, Hendrik A Zuiderbaan, Joseph T Nguyen, Hollis G Potter, Andrew D Pearle
BACKGROUND: Static anterior tibial subluxation after an anterior cruciate ligament (ACL) injury highlights the abnormal relationship between the tibia and femur in patients with ACL insufficiency, although causal factors including injuries to secondary stabilizers or the time from injury to reconstruction have not been examined. PURPOSE: To determine static relationships between the tibia and femur in patients with various states of ACL deficiency and to identify factors associated with anterior tibial subluxation...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28298052/allograft-augmentation-of-hamstring-autograft-for-younger-patients-undergoing-anterior-cruciate-ligament-reconstruction
#13
Cale A Jacobs, Jeremy M Burnham, Eric Makhni, Chaitu S Malempati, Eric Swart, Darren L Johnson
BACKGROUND: Younger patients and those with smaller hamstring autograft diameters have been shown to be at significantly greater risk of graft failure after anterior cruciate ligament (ACL) reconstruction. To date, there is no information in the literature about the clinical success and/or cost-effectiveness of increasing graft diameter by augmenting with semitendinosus allograft tissue for younger patients. HYPOTHESIS: Hybrid hamstring grafts are a cost-effective treatment option because of a reduced rate of graft failure...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28293966/anatomic-reconstruction-of-the-anterior-cruciate-ligament-of-the-knee-with-or-without-reconstruction-of-the-anterolateral-ligament
#14
Samir Abdulrazik Ibrahim, Emad Mureed Shohdy, Yousef Marwan, Sami Abdulghaffar Ramadan, Abdulrahman Khalid Almisfer, Mohammad Wagdy Mohammad, Wael Shoabe Abdulsattar, Shiref Khirat
BACKGROUND: Rotational instability of the knee remains an issue after anterior cruciate ligament (ACL) reconstruction. Hypothesis/Purpose: The purpose was to evaluate the subjective and objective outcomes of combined reconstruction of the ACL and anterolateral ligament (ALL) of the knee. The hypothesis was that favorable outcomes can be achieved with this surgical procedure compared with isolated anatomic reconstruction of the ACL. STUDY DESIGN: Randomized controlled trial; Level of evidence, 2...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28293698/anterolateral-ligament-abnormalities-are-associated-with-peripheral-ligament-and-osseous-injuries-in-acute-ruptures-of-the-anterior-cruciate-ligament
#15
Camilo Partezani Helito, Paulo Victor Partezani Helito, Renata Vidal Leão, Marco Kawamura Demange, Marcelo Bordalo-Rodrigues
PURPOSE: Few studies have used MRI to identify the ALL. As it was shown that it is not possible to precisely characterize this ligament in all examination, it is important to identify concomitant lesions that can help in diagnosing ALL abnormalities. It is important to characterise this injury due to its association with anterolateral knee instability. Thus, the present study was performed to determine the frequency of ALL injuries in patients with acute ACL rupture and to analyse its associated knee lesions...
March 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28290752/mri-based-assessment-of-lower-extremity-muscle-volumes-in-patients-before-and-after-acl-reconstruction
#16
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/28289822/combined-anterior-cruciate-ligament-reconstruction-and-lateral-extra-articular-tenodesis-does-not-result-in-an-increased-rate-of-osteoarthritis-a-systematic-review-and-best-evidence-synthesis
#17
REVIEW
Brian M Devitt, Nicolas Bouguennec, Kristoffer W Barfod, Tabitha Porter, Kate E Webster, Julian A Feller
PURPOSE: The role of lateral extra-articular tenodesis (LEAT) as an augment to primary anterior cruciate ligament reconstruction (ACLR) remains controversial. However, concerns exist regarding the risk of development of osteoarthritis due to over constraint of the knee. To systematically review the literature to analyse the long-term incidence of osteoarthritis in patients who had an LEAT performed in isolation or in combination with intra-articular ACLR for the treatment of ACL deficiency...
March 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28286916/contributions-of-the-anterolateral-complex-and-the-anterolateral-ligament-to-rotatory-knee-stability-in-the-setting-of-acl-injury-a-roundtable-discussion
#18
REVIEW
Volker Musahl, Alan Getgood, Philippe Neyret, Steven Claes, J M Burnham, Cecile Batailler, Bertrand Sonnery-Cottet, Andy Williams, Andrew Amis, Stefano Zaffagnini, Jón Karlsson
Persistent rotatory knee laxity is increasingly recognized as a common finding after anterior cruciate ligament (ACL) reconstruction. While the reasons behind rotator knee laxity are multifactorial, the impact of the anterolateral knee structures is significant. As such, substantial focus has been directed toward better understanding these structures, including their anatomy, biomechanics, in vivo function, injury patterns, and the ideal procedures with which to address any rotatory knee laxity that results from damage to these structures...
March 12, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28282242/influence-of-the-injury-to-surgery-interval-on-the-healing-potential-of-human-anterior-cruciate-ligament-derived-cells
#19
Takao Inokuchi, Tomoyuki Matsumoto, Koji Takayama, Naoki Nakano, Shurong Zhang, Daisuke Araki, Takehiko Matsushita, Ryosuke Kuroda
BACKGROUND: Vascular CD34+ cells in anterior cruciate ligament (ACL) tissue have the potential for high proliferation and multilineage differentiation that can accelerate tendon-bone healing. While patient characteristics, such as age, can affect tendon-bone healing, the influence of elapsed time after injury on the healing process is unclear. HYPOTHESIS: Cells obtained during the early phase after injury will exhibit a greater tendon-bone healing potential compared with chronic phase counterparts when applied to an immunodeficient rat model of ACL reconstruction...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28282214/clinical-and-radiographic-outcomes-of-meniscus-surgery-and-future-targets-for-biologic-intervention-a-review-of-data-from-the-moon-group
#20
Robert W Westermann, Morgan Jones, David Wasserstein, Kurt P Spindler
Meniscus injury and treatment occurred with the majority of anterior cruciate ligament reconstructions (ACLR) in the multicenter orthopaedic outcomes (MOON) cohort. We describe the patient reported outcomes, radiographic outcomes and predictors of pain from meniscus injuries and treatment in the setting of ACLR. Patient reported outcomes improve significantly following meniscus repair with ACLR, but differences exist based on the meniscus injury laterally (medial or lateral). Patients undergoing medial meniscus repair have worse patient-reported outcomes and more pain compared to those with uninjured menisci...
March 10, 2017: Connective Tissue Research
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