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Anterior cruciate ligament injury

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https://www.readbyqxmd.com/read/27904796/functional-hop-tests-and-tuck-jump-assessment-scores-between-female-division-i-collegiate-athletes-participating-in-high-versus-low-acl-injury-prone-sports-a-cross-sectional-analysis
#1
Philipp Hoog, Meghan Warren, Craig A Smith, Nicole J Chimera
BACKGROUND: Although functional tests including the single leg hop (SLH), triple hop (TH), cross over hop (COH) for distance, and the tuck jump assessment (TJA) are used for return to play (RTP) criteria for post anterior cruciate ligament (ACL) injury, sport-specific baseline measurements are limited. PURPOSE: The purpose of this study was to examine differences in SLH, TH, and COH distance and limb symmetry index (LSI), as well as total scores, number of jumps, and individual flaws of the TJA in 97 injury-free Division I (DI) collegiate female student athletes participating in ACL injury prone vs...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27903590/anterior-cruciate-ligament-derived-stem-cells-transduced-with-bmp2-accelerate-graft-bone-integration-after-acl-reconstruction
#2
Yohei Kawakami, Koji Takayama, Tomoyuki Matsumoto, Ying Tang, Bing Wang, Yutaka Mifune, James H Cummins, Ryan J Warth, Ryosuke Kuroda, Masahiro Kurosaka, Freddie H Fu, Johnny Huard
BACKGROUND: Strong graft-bone integration is a prerequisite for successful graft remodeling after reconstruction of the anterior cruciate ligament (ACL) using soft tissue grafts. Novel strategies to accelerate soft tissue graft-bone integration are needed to reduce the need for bone-tendon-bone graft harvest, reduce patient convalescence, facilitate rehabilitation, and reduce total recovery time after ACL reconstruction. HYPOTHESIS: The application of ACL-derived stem cells with enhanced expression of bone morphogenetic protein 2 (BMP2) onto soft tissue grafts in the form of cell sheets will both accelerate and improve the quality of graft-bone integration after ACL reconstruction in a rat model...
November 30, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27900267/depression-and-psychiatric-disease-associated-with-outcomes-after-anterior-cruciate-ligament-reconstruction
#3
REVIEW
Hao-Hua Wu, Max Liu, Joshua S Dines, John D Kelly, Grant H Garcia
While most patients with an anterior cruciate ligament (ACL) injury indicate satisfaction with surgical intervention, a significant proportion still do not return to pre-injury level of function or sport. Psychiatric comorbidities, such as depression, have recently been associated with poor clinical outcomes after ACL reconstruction (ACLR). To date, no article has yet examined how depression affects ACLR outcomes and how potential screening and intervention for psychological distress may affect postoperative activity level...
November 18, 2016: World Journal of Orthopedics
https://www.readbyqxmd.com/read/27900196/muscle-function-is-associated-with-future-patient-reported-outcomes-in-young-adults-with-acl-injury
#4
Vala Flosadottir, Ewa M Roos, Eva Ageberg
BACKGROUND/AIM: Consequences of an anterior cruciate ligament (ACL) injury include worse patient-reported outcomes (PROs) and a decrease in activity level. Muscle function can be improved by targeted exercise. Our aims were to investigate cross-sectional and longitudinal associations among lower extremity muscle function and PROs after ACL injury. METHODS: Fifty-four participants (15 women, mean 30 years) with ACL injury or reconstruction, from the Knee Anterior Cruciate Ligament, Nonsurgical versus Surgical Treatment (KANON) trial (ISRCTN84752559), were assessed with hop performance, muscle power and postural orientation 3 years (SD 0...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27900192/vertical-stiffness-is-not-related-to-anterior-cruciate-ligament-elongation-in-professional-rugby-union-players
#5
Benjamin G Serpell, Jennie M Scarvell, Mark R Pickering, Nick B Ball, Diana Perriman, John Warmenhoven, Paul N Smith
BACKGROUND: Novel research surrounding anterior cruciate ligament (ACL) injury is necessary because ACL injury rates have remained unchanged for several decades. An area of ACL risk mitigation which has not been well researched relates to vertical stiffness. The relationship between increased vertical stiffness and increased ground reaction force suggests that vertical stiffness may be related to ACL injury risk. However, given that increased dynamic knee joint stability has been shown to be associated with vertical stiffness, it is possible that modification of vertical stiffness could help to protect against injury...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27900188/single-leg-balance-and-core-motor-control-in-children-when-does-the-risk-for-acl-injury-occurs
#6
Allison B Hutchinson, Paul Yao, Mark R Hutchinson
INTRODUCTION: While numerous publications have demonstrated the correlation of poor single-leg balance and core motor control with an increased risk of anterior cruciate ligament (ACL) injuries in skeletally mature female athletes, few have analysed the preadolescent population regarding when indeed comparative deficits in balance and core control actually occur. The purpose of this study was to assess whether the neuromotor factors that place mature females at increased risk of ACL injury actually are present in preadolescents and if so when...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27899894/moderate-load-eccentric-exercise-a-distinct-novel-training-modality
#7
REVIEW
Hans Hoppeler
Over the last 20 years a number of studies have been published using progressive eccentric exercise protocols on motorized ergometers or similar devices that allow for controlled application of eccentric loads. Exercise protocols ramp eccentric loads over an initial 3 weeks period in order to prevent muscle damage and delayed onset muscle soreness. Final training loads reach 400-500 W in rehabilitative settings and over 1200 W in elite athletes. Training is typically carried out three times per week for durations of 20-30 min...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27894146/variables-associated-with-chondral-and-meniscal-injuries-in-anterior-cruciate-ligament-surgery
#8
E Lyle Cain, Glenn S Fleisig, Brent A Ponce, Hikel A Boohaker, Martha P George, Gerald McGwin, James R Andrews, Lawrence J Lemak, William G Clancy, Jeffrey R Dugas
This article aims to evaluate factors associated with chondral and meniscal lesions in primary and revision anterior cruciate ligament (ACL) reconstructions. ACL reconstructions from 2001 to 2008 at a single institution were retrospectively analyzed. Logistic regression was used to estimate the association between chondral and meniscal injuries and age, gender, tear chronicity, additional ligamentous injuries, sport type, and participation level. Of the 3,040 ACL reconstructions analyzed, 90.4% were primary reconstructions and 9...
November 28, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27885289/assessment-of-knee-joint-injuries-with-low-field-strength-magnetic-resonance-imaging
#9
O B Panta, N P Neupane, S Songmen, G Gurung
BACKGROUND: Magnetic Resonance Imaging is an appropriate screening tool before therapeutic arthroscopy, making diagnostic arthroscopy unnecessary in most patients. This study aims to evaluate the MRI findings in knee injuries and diagnostic value of low Strength MRI for assessing Meniscal and cruciate ligament tear. METHODS: A cross sectional study was conducted on patients undergoing "Magnetic Resonance Imaging of the Knee" for injuries of the knee and excluded patients undergoing MRI for other causes, poor diagnostic quality MRI and post operative MRI...
May 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/27882612/the-relationship-between-geometry-of-the-extensor-mechanism-of-the-knee-and-risk-of-anterior-cruciate-ligament-injury
#10
Josh C Carter, Daniel R Sturnick, Pamela M Vacek, Michael J DeSarno, Erin C Argentieri, James R Slauterbeck, Robert J Johnson, Bruce D Beynnon
The complex inter-segmental forces that are developed across an extended knee by body weight and contraction of the quadriceps muscle group transmits an anteriorly-directed force on the tibia that strain the anterior cruciate ligament (ACL). We hypothesized that a relationship exists between geometry of the knees extensor mechanism and the risk of sustaining a non-contact ACL injury. Geometry of the extensor mechanism was characterized using MRI scans of the knees of 88 subjects that suffered their first non-contact ACL injury and 88 matched control subjects with normal knees that were on the same team...
November 24, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27881382/early-changes-in-knee-center-of-rotation-during-walking-after-anterior-cruciate-ligament-reconstruction-correlate-with-later-changes-in-patient-reported-outcomes
#11
Matthew R Titchenal, Constance R Chu, Jennifer C Erhart-Hledik, Thomas P Andriacchi
BACKGROUND: Altered knee kinematics after anterior cruciate ligament injury and reconstruction (ACLR) have been implicated in the development of posttraumatic osteoarthritis (PTOA), leading to poor long-term clinical outcomes. PURPOSE: This study was conducted to determine (1) whether the average knee center of rotation (KCOR), a multidimensional metric of knee kinematics, of the ACL-reconstructed knee during walking differs from that of the uninjured contralateral knee; (2) whether KCOR changes between 2 and 4 years after surgery; and (3) whether early KCOR changes predict patient-reported outcomes 8 years after ACLR...
November 23, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27880969/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
#12
Ran Thein, Oded Hershkovich, Barak Gordon, Gideon Burstein, Shay Tenebaum, Estela Derazne, Dorit Tzur, Ari Shamis, Arnon Afek, Yitshak Kreiss
Anterior cruciate ligament and meniscal injuries are associated with secondary osteoarthrosis which may lead to functional impairment and economic burden. The prevalence of knee injury has not been studied in depth. Our purpose was to report the prevalence of knee ligament and meniscal injuries and their associations with gender, body mass index (BMI), and height in young adults and to characterize individuals with meniscal injuries who gained full recovery. A cross-sectional, population-based study was conducted...
November 23, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27880968/results-of-a-new-treatment-concept-for-concomitant-lesion-of-medial-collateral-ligament-in-patients-with-rupture-of-anterior-cruciate-ligament
#13
Fabian Blanke, Jochen Paul, Maximilian Haenle, Jannes Sailer, Geert Pagenstert, Lutz von Wehren, Stephan Vogt, Martin Majewski
Anteromedial knee injury with rupture of anterior cruciate ligament (ACL) and concomitant lesion of medial collateral ligament (MCL) is common in athletes. No standardized treatment concept can be found within the literature. This study presents results of a new treatment concept for concomitant MCL lesions in patients with ACL rupture. In this study, 67 recreational athletes with ACL injury and concomitant MCL lesion were treated according to a distinct treatment concept. Patients were classified in six different types of concomitant MCL lesion depending on grade of MCL lesion and presence of anteromedial rotatory instability (AMRI)...
November 23, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27876498/associated-lateral-medial-knee-instability-and-its-relevant-factors-in-anterior-cruciate-ligament-injured-knees
#14
Arata Yuuki, Takeshi Muneta, Toshiyuki Ohara, Ichiro Sekiya, Hideyuki Koga
BACKGROUND: Associations of lateral/medial knee instability with anterior cruciate ligament (ACL) injury have not been thoroughly investigated. The purposes of this study were to investigate whether lateral/medial knee instability is associated with ACL injury, and to clarify relevant factors for lateral/medial knee instability in ACL-injured knees. METHODS: One hundred and nineteen patients with unilateral ACL-injured knees were included. Lateral/medial knee instability was assessed with varus/valgus stress X-ray examination for both injured and uninjured knees by measuring varus/valgus angle, lateral/medial joint opening, and lateral/medial joint opening index...
November 19, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27874298/volitional-spine-stabilization-during-a-drop-vertical-jump-from-different-landing-heights-implications-for-anterior-cruciate-ligament-injury
#15
Ram Haddas, Troy Hooper, C Roger James, Phillip S Sizer
CONTEXT:  Volitional spine stabilization (VSS) during dynamic activities may alter trunk motion, but the role of the core musculature in positioning the trunk during landing tasks is unclear. OBJECTIVE:  To determine whether volitional core-muscle activation incorporated during a drop vertical jump alters lower extremity kinematics and kinetics, as well as trunk and lower extremity muscle activity at different landing heights. DESIGN:  Controlled laboratory study...
November 22, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27873020/beneficial-and-limiting-factors-for-return-to-work-following-anterior-cruciate-ligament-reconstruction-a-retrospective-cohort-study
#16
Judith A M Groot, Freerk J Jonkers, Arthur J Kievit, P Paul F M Kuijer, Marco J M Hoozemans
PURPOSE: Evidence-based advice for return to work (RTW) after anterior cruciate ligament (ACL) reconstruction is not available. Therefore, the objectives of this study were to determine when patients achieve full RTW, and to explore the beneficial and limiting factors for fully RTW after ACL reconstruction. METHODS: A retrospective cohort study was performed after ACL reconstruction among 185 patients in one hospital. Data from patient files and a questionnaire were used to explore whether patient-, injury-, surgery-, sports-, work- and rehabilitation-related factors are beneficial or limiting for fully RTW after ACL reconstruction, using a backward stepwise logistic regression analysis...
November 21, 2016: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27871663/surgical-management-and-treatment-of-the-anterior-cruciate-ligament-medial-collateral-ligament-injured-knee
#17
REVIEW
Kevin M Dale, James R Bailey, Claude T Moorman
The medial collateral ligament (MCL) is the most commonly injured ligament of the knee. The anterior cruciate ligament (ACL) is the most commonly injured ligament in conjunction with the MCL. Most MCL injuries can be treated nonoperatively, whereas the ACL often requires reconstruction. A good physical examination is essential for diagnosis, whereas radiographs and MRI of the knee confirm diagnosis and help guide treatment planning. Preoperative physical therapy should be completed before surgical management to allow for return of knee range of motion and an attempt at MCL healing...
January 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27871661/single-bundle-anatomic-anterior-cruciate-ligament-reconstruction-surgical-technique-pearls-and-pitfalls
#18
REVIEW
Chaitu S Malempati, Adam V Metzler, Darren L Johnson
Anterior cruciate ligament (ACL) ruptures are some of the most common sports-related injuries. Treatment of these injuries with ACL reconstruction has evolved over the last several decades. Anatomic single-bundle ACL reconstruction offers an accurate and reproducible method to reproduce native knee anatomy, restore knee kinematics, and ultimately restore function and decrease long-term degenerative effects. The importance of adequate arthroscopic visualization and a thorough understanding of the native anatomic ACL landmarks are discussed in this article...
January 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27871659/graft-selection-in-anterior-cruciate-ligament-surgery-who-gets-what-and-why
#19
REVIEW
Kyle R Duchman, T Sean Lynch, Kurt P Spindler
Anterior cruciate ligament (ACL) injuries are common and affect a young, active patient population. Despite much research, ACL reconstruction graft choice remains a topic of debate. Based on the best available evidence, autograft seems to be superior to allograft for ACL reconstruction in young, active patients. Future high-level studies are required in order to better define the role of allograft in ACL reconstruction. As graft choice is often influenced by surgeon preference, it is important that surgeons understand the current literature as well as the goals of their patients...
January 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27871658/rehabilitation-principles-of-the-anterior-cruciate-ligament-reconstructed-knee-twelve-steps-for-successful-progression-and-return-to-play
#20
REVIEW
Kevin E Wilk, Christopher A Arrigo
The rehabilitation process begins immediately after injury to the anterior cruciate ligament (ACL). The goal of preoperative rehabilitation is to prepare the patient for surgery. Current rehabilitation programs focus on strengthening exercises and proprioceptive and neuromuscular control drills to provide a neurologic stimulus. It is also important to address preexisting factors, especially for the female athlete, that may predispose to future injury, such as hip and hamstring weakness. Our goal in the rehabilitation program is to restore full, unrestricted function and to assist the patient to return to 100% of the preinjury level while achieving excellent long-term outcomes...
January 2017: Clinics in Sports Medicine
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