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cruciate ligament

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https://www.readbyqxmd.com/read/28445904/-are-there-sex-differences-regarding-ski-length-to-height-ratio-ski-length-to-weight-ratio-sidecut-radius-and-ski-boot-sole-abrasion-among-acl-injured-male-and-female-skiers
#1
Markus Posch, Gerhard Ruedl, Katja Tecklenburg, Kenneth Helle, Alois Schranz, Martin Burtscher
Introduction Female skiers suffer from knee injuries twice as much as male skiers, and the risk of an injury to the anterior cruciate ligament (ACL) is three times greater among females compared to males. The sex-specific ACL injury risk depends on internal (e. g. age, skiing skills, fitness level) and external (e. g. slope and weather conditions, ski equipment) factors. However, it is not clear whether male and female recreational skiers with an ACL injury differ regarding the sidecut radius and ski boot sole abrasion...
April 26, 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/28445290/efficacy-of-quadriceps-vastus-medialis-dry-needling-in-a-rehabilitation-protocol-after-surgical-reconstruction-of-complete-anterior-cruciate-ligament-rupture
#2
Jorge Velázquez-Saornil, Beatriz Ruíz-Ruíz, David Rodríguez-Sanz, Carlos Romero-Morales, Daniel López-López, Cesar Calvo-Lobo
BACKGROUND: Several new rehabilitation modalities have been proposed after anterior cruciate ligament (ACL) reconstruction. Among these, trigger point dry needling (TrP-DN) might be useful in the treatment of myofascial pain syndrome associated with ACL reconstruction to reduce pain intensity, increase knee flexion range and modify the mechanical properties of the quadriceps muscle during late-stage rehabilitation. To date, this is the first randomized clinical trial to support the use of TrP-DN in the early rehabilitation process after ACL reconstruction...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28441059/effectiveness-of-neuromuscular-training-based-on-the-neuromuscular-risk-profile
#3
Timothy E Hewett, Kevin R Ford, Yingying Y Xu, Jane Khoury, Gregory D Myer
BACKGROUND: The effects of targeted neuromuscular training (TNMT) on movement biomechanics associated with the risk of anterior cruciate ligament (ACL) injuries are currently unknown. Purpose/Hypotheses: To determine the effectiveness of TNMT specifically designed to increase trunk control and hip strength. The hypotheses were that (1) TNMT would decrease biomechanical and neuromuscular factors related to an increased ACL injury risk and (2) TNMT would decrease these biomechanical and neuromuscular factors to a greater extent in athletes identified as being at a high risk for future ACL injuries...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28439638/total-knee-arthroplasty-using-ultra-congruent-inserts-can-provide-similar-stability-and-function-compared-with-cruciate-retaining-total-knee-arthroplasty
#4
Eun-Kyoo Song, Hong-An Lim, Sang-Don Joo, Sung-Kyu Kim, Keun-Bae Lee, Jong-Keun Seon
PURPOSE: Recently, ultra-congruent (UC) inserts have shown successful outcomes following total knee arthroplasty (TKA). It was hypothesized that patients in the UC group would not show significantly different in vivo stability or functional outcomes from those in the cruciate-retaining (CR) group. METHODS: The prospective study enrolled patients who had been treated with either CR or UC TKAs (38 cases in each group), after a minimum 3-year follow-up. The same surgical technique was used with the same femoral components in both groups except for the polyethylene inserts (CR or UC)...
April 24, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28439637/tibiofemoral-rotational-alignment-affects-flexion-angles-in-navigated-posterior-stabilized-total-knee-arthroplasty
#5
Kazunari Ishida, Nao Shibanuma, Tomoyuki Matsumoto, Akihiko Toda, Shinya Oka, Kazuki Kodato, Koji Takayama, Masahiro Kurosaka, Ryosuke Kuroda
PURPOSE: To investigate the tibiofemoral rotational profiles during navigated posterior-stabilized (PS) total knee arthroplasty (TKA) and investigate the effect on post-operative maximum flexion angles. METHODS: Twenty-five subjects, treated with navigated PS TKA, were enrolled, and the effect of posterior cruciate ligament (PCL) resection and component implantation on tibiofemoral rotational kinematics was statistically evaluated. Then, the effect of rotational alignment changes on the post-operative maximum angles was retrospectively examined in 96 subjects using the multiple regression analysis...
April 24, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28439635/high-incidence-of-partially-anatomic-tunnel-placement-in-primary-single-bundle-acl-reconstruction
#6
Andrea Achtnich, Francesco Ranuccio, Lukas Willinger, Jonas Pogorzelski, Andreas B Imhoff, Sepp Braun, Elmar Herbst
PURPOSE: The purpose of this study was to evaluate tunnel position and width in failed primary single-bundle (SB) anterior cruciate ligament (ACL) reconstructions. It was hypothesized that both femoral and tibial bone tunnels are frequently malplaced in terms of a partially anatomic position in the setting of failed SB ACL reconstruction. METHODS: Patients with recurrent instability following isolated SB ACL reconstruction using hamstring tendon autografts, undergoing revision ACL surgery, were retrospectively included...
April 24, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28437856/microstructure-variations-in-the-soft-hard-tissue-junction-of-the-human-anterior-cruciate-ligament
#7
Lei Zhao, Peter V Lee, David C Ackland, Neil D Broom, Ashvin Thambyah
The role of the sub-bundles in the anterior cruciate ligament (ACL) has been defined, such that the anterior-medial bundle directly resists anterior tibial translation while the posterior lateral bundle is involved in rotational stability. With regards to this biomechanical function, much of the previous work on bundle-specific morphology has been carried out on the macro-scale, with much less attention given to the micro-to-ultrastructural scalar levels. This is especially true of the enthesis and its microstructure, a biomechanically significant region that has been largely neglected in the published literature dealing with ACL sub-bundle anatomy...
April 24, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28437619/management-of-posterior-cruciate-ligament-tibial-avulsion-injuries-a-systematic-review
#8
Perry O Hooper, Chris Silko, Tennison L Malcolm, Lutul D Farrow
BACKGROUND: Tibial-sided avulsion injuries of the posterior cruciate ligament (PCL) generally require surgical intervention. No consensus exists concerning the optimal surgical treatment approach for these injuries. PURPOSE: To perform a systematic review investigating the open and arthroscopic surgical treatment modalities, outcomes, and complications of PCL tibial-sided bony avulsions. STUDY DESIGN: Systematic review; Level of evidence, 4...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28437550/use-of-magnetic-resonance-imaging-to-predict-quadrupled-semitendinosus-graft-diameter-in-all-inside-anterior-cruciate-ligament-reconstruction
#9
Joseph Serino, Ryan Murray, Evan H Argintar
This study was conducted to evaluate whether preoperative magnetic resonance imaging (MRI) measurements of the cross-sectional area and length of the semitendinosus tendon correlated with graft diameter. The goal of the study was to identify tendons at risk for requiring graft augmentation. The records of 140 consecutive patients undergoing anterior cruciate ligament (ACL) reconstruction between 2013 and 2016 were examined retrospectively. The study included 39 patients who underwent all-inside ACL reconstruction with a semitendinosus autograft...
April 24, 2017: Orthopedics
https://www.readbyqxmd.com/read/28436958/local-clearance-of-senescent-cells-attenuates-the-development-of-post-traumatic-osteoarthritis-and-creates-a-pro-regenerative-environment
#10
Ok Hee Jeon, Chaekyu Kim, Remi-Martin Laberge, Marco Demaria, Sona Rathod, Alain P Vasserot, Jae Wook Chung, Do Hun Kim, Yan Poon, Nathaniel David, Darren J Baker, Jan M van Deursen, Judith Campisi, Jennifer H Elisseeff
Senescent cells (SnCs) accumulate in many vertebrate tissues with age and contribute to age-related pathologies, presumably through their secretion of factors contributing to the senescence-associated secretory phenotype (SASP). Removal of SnCs delays several pathologies and increases healthy lifespan. Aging and trauma are risk factors for the development of osteoarthritis (OA), a chronic disease characterized by degeneration of articular cartilage leading to pain and physical disability. Senescent chondrocytes are found in cartilage tissue isolated from patients undergoing joint replacement surgery, yet their role in disease pathogenesis is unknown...
April 24, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28435336/anterior-cruciate-ligament-injury-reinjury-in-alpine-ski-racing-a-narrative-review
#11
REVIEW
Matthew J Jordan, Per Aagaard, Walter Herzog
The purpose of the present review was to: 1) provide an overview of the current understanding on the epidemiology, etiology, risk factors, and prevention methods for anterior cruciate ligament (ACL) injury in alpine ski racing; and 2) provide an overview of what is known pertaining to ACL reinjury and return to sport after ACL injury in alpine ski racing. Given that most of the scientific studies on ACL injuries in alpine ski racing have been descriptive, and that very few studies contributed higher level scientific evidence, a nonsystematic narrative review was employed...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28434280/use-of-a-custom-made-limb-press-model-to-assess-intra-and-extracapsular-techniques-for-treating-cranial-cruciate-ligament-rupture-in-cats
#12
Wolfgang Kneifel, Danilo Borak, Barbara Bockstahler, Eva Schnabl-Feichter
Objectives This study aimed to compare the under-and-over technique, a type of intracapsular treatment, and the standard fabella-tibial suture, a method for extracapsular treatment, in achieving immediate, postoperative stifle stability after cranial cruciate ligament (CrCL) rupture by using a feline, custom-made limb-press model. Methods Cadaveric feline hindlimb specimens (n = 14) were positioned in the limb press at predefined joint angles (stifle joint: 120°; hock joint: 120°), and vertical loads of 5%, 10%, 20% and 30% body weight were applied statically...
April 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28433391/mechanisms-of-anterior-posterior-stability-of-the-knee-joint-under-load-bearing
#13
Ryan J Reynolds, Peter S Walker, John Buza
The anterior-posterior (AP) stability of the knee is an important aspect of functional performance. Studies have shown that the stability increases when compressive loads are applied, as indicated by reduced laxity, but the mechanism has not been fully explained. A test rig was designed which applied combinations of AP shear and compressive forces, and measured the AP displacements relative to the neutral position. Five knees were evaluated at compressive loads of 0, 250, 500, and 750N, with the knee at 15° flexion...
April 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28432401/erratum-to-capacity-of-muscle-derived-stem-cells-and-pericytes-to-promote-tendon-graft-integration-and-ligamentization-following-anterior-cruciate-ligament-reconstruction
#14
Tomislav Ćuti, Maja Antunović, Inga Marijanović, Alan Ivković, Andreja Vukasović, Igor Matić, Marko Pećina, Damir Hudetz
No abstract text is available yet for this article.
April 21, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28432395/the-magnetic-resonance-imaging-appearance-of-the-anterolateral-ligament-of-the-knee-in-association-with-anterior-cruciate-rupture
#15
Jonathan D Kosy, Peter J Schranz, Anish Patel, Rahul Anaspure, Vipul I Mandalia
OBJECTIVE: The magnetic resonance imaging (MRI) appearance of the anterolateral ligament (ALL) has been described. However, the appearance of this structure and injury, in the presence of anterior cruciate ligament (ACL) injury, is less well defined. We studied the incidence of injury to the ALL and the pattern of this injury on MRI. MATERIALS AND METHODS: Following Institutional Review Board approval, a retrospective study of 375 consecutive MRI studies was performed...
April 21, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28431423/blood-bupivacaine-concentrations-after-a-combined-single-shot-sciatic-block-and-a-continuous-femoral-nerve-block-in-pediatric-patients-a-prospective-observational-study
#16
Santhanam Suresh, Gildasio S De Oliveira
We evaluated blood bupivacaine concentrations in children having a single-shot sciatic and continuous femoral blocks after anterior cruciate ligament repair. Dried blood spot samples were analyzed for bupivacaine levels at 0, 5, 15, 30, 60, and 120 minutes and 4, 24, and 48 hours. The highest 99% upper confidence interval limit was 135 ng/mL at the 4-hour evaluation point. The 99% upper confidence interval was below potentially toxic levels (1500 ng/mL) across all sampling times. The risk of local anesthetic toxicity in pediatric patients receiving single-shot sciatic and continuous femoral nerve blocks is very low...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28430526/the-bow-tie-shape-of-the-anterior-cruciate-ligament-as-visualized-by-high-resolution-magnetic-resonance-imaging
#17
Kang Min Sohn, Min Jin Lee, Helen Hong, Young Cheol Yoon, Chan Deok Park, Joon Ho Wang
BACKGROUND: Although numerous studies have examined the anatomic characteristics of the anterior cruciate ligament (ACL), its actual shape remains unclear. PURPOSE: To determine the average shape of the ACL by analyzing its cross section through the use of high-resolution magnetic resonance imaging (MRI) data. STUDY DESIGN: Descriptive laboratory study. METHODS: The study included 96 MRIs, conducted using a 3.0-T magnet, to analyze the shape of the ACL...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28429045/assessment-of-the-alpha-angle-and-mobility-of-the-hip-in-patients-with-noncontact-anterior-cruciate-ligament-injury
#18
Osmar Valadao Lopes, Gustavo Tragnago, Cristiano Gatelli, Rogério Nascimento Costa, Leandro de Freitas Spinelli, Paulo Renato Fernandes Saggin, André Kuhn
PURPOSE: To evaluate the alpha angle of the hip in patients with noncontact anterior cruciate ligament (ACL) injury and compare it with patients without injury. In addition, external and internal rotation of the hip was assessed and correlated with the alpha angle. METHODS: The alpha angle of the ipsilateral hip was assessed in 41 subjects with non-contact ACL tear and compared with 39 subjects with no tear. The external and internal rotation of the ipsilateral hip was also evaluated...
April 20, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28428033/a-critical-analysis-of-limb-symmetry-indices-of-hop-tests-in-athletes-after-anterior-cruciate-ligament-reconstruction-a-case-control-study
#19
Alli Gokeler, Wouter Welling, Anne Benjaminse, Koen Lemmink, Romain Seil, Stefano Zaffagnini
BACKGROUND: Hop tests are frequently used to determine return to sports (RTS) after anterior cruciate ligament reconstruction (ACLR). Given that bilateral deficits are present after ACLR, this may result in a falsely high limb symmetry index (LSI), since LSI is calculated as a ratio between the values of the limbs. HYPOTHESIS: Athletes after ACLR would achieve LSI > 90% for the hop test. Secondly, athletes after ACLR demonstrate decreased jump distance on the single hop for distance (SLH) and triple leg hop for distance (TLH) and decreased number of hops for the side hop (SH) for both involved and uninvolved limbs compared to normative data of sex, age and type of sports matched healthy athletes...
April 17, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28427873/risk-factors-for-hospital-admission-after-anterior-cruciate-ligament-reconstruction
#20
Steven L Bokshan, Steven F DeFroda, Brett D Owens
PURPOSE: To determine patient and surgical risk factors for admission after anterior cruciate ligament reconstruction (ACLR) using the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) database. METHODS: All instances of ACLR from 2005 to 2014 from the ACS NSQIP prospective database were analyzed. Both univariate analysis and binary logistic regression were performed to determine which patient demographics and medical comorbidities were associated with admission after surgery...
April 17, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
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