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https://www.readbyqxmd.com/read/29922375/changes-in-injury-risk-mechanisms-after-soccer-specific-fatigue-in-male-youth-soccer-players
#1
Michal Lehnert, Mark De Ste Croix, Zuzana Xaverova, Michal Botek, Renata Varekova, Amr Zaatar, Ondrej Lastovicka, Petr Stastny
The aim of this study was to examine the acute effects of soccer specific fatigue on muscular and neuromuscular function in male youth soccer players. Elite soccer players (n = 20; age 15.7 ± 0.5 y; body height 177.75 ± 6.61 cm; body mass 67.28 ± 8.29 kg) were measured before and after soccer specific exercise (SAFT90 ). The reactive strength index (RSI) was determined by a drop jump test, leg stiffness (LS) by a 20 sub-maximal two-legged hopping test, and a functional hamstring to quadriceps strength ratio from isokinetic concentric and eccentric strength of the dominant and non-dominant leg (measured at angular velocities of 1...
June 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29912857/stretch-could-reduce-hamstring-injury-risk-during-sprinting-by-right-shifting-the-length-torque-curve
#2
Mianfang Ruan, Li Li, Chen Chen, Xie Wu
Ruan, M, Li, L, Chen, C, and Wu, X. Stretch could reduce hamstring injury risk during sprinting by right shifting the length-torque curve. J Strength Cond Res XX(X): 000-000, 2018-It was hypothesized that static stretch would shift the length-torque curve to the right, which may reduce the risk of muscle strain injuries. The purpose of this study was to evaluate the acute effects of static stretching of hamstring (SSH) on the risk of hamstring injury during sprinting indicated by the shift of the length-torque relationship...
June 15, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29910339/analysis-of-the-relationship-between-elite-wrestlers-leg-strength-and-balance-performance-and-injury-history
#3
Sezen Çimen Polat, Celal Bulgay, İmdat Yarım, Halil İbrahim Cicioğlu, Ebru Çetin
The purpose of this study is to examine the correlation between leg power and balance performance in elite wrestlers and injury history. In the research group, there are 18 elite freestyle male wrestlers at the ages of 24.27 ± 3.18 years, with a height of 171.86 ± 5.44 cm and a body weight of 79.27 ± 11.16 kg. Information on the injury history of the athletes’ upper legs for the past year was collected via interviews with the club’s physiotherapist. Laboratory tests to measure performance assessed height, body weight, Y balance and isokinetic leg strength...
April 17, 2018: Sports
https://www.readbyqxmd.com/read/29904897/anterior-cruciate-ligament-repair-past-present-and-future
#4
REVIEW
Piyush Mahapatra, Saman Horriat, Bobby S Anand
BACKGROUND: This article provides a detailed narrative review on the history and current concepts surrounding ligamentous repair techniques in athletic patients. In particular, we will focus on the anterior cruciate ligament (ACL) as a case study in ligament injury and ligamentous repair techniques. PubMed (MEDLINE), EMBASE and Cochrane Library databases for papers relating to primary anterior cruciate ligament reconstruction were searched by all participating authors. All relevant historical papers were included for analysis...
June 15, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29900181/use-of-posterior-hamstring-harvest-during-anterior-cruciate-ligament-reconstruction-in-the-pediatric-and-adolescent-population
#5
Krishn Khanna, Abhinav Janghala, Nirav K Pandya
Background: Posterior hamstring harvest has been described in the adult population in a limited fashion, but no study is available describing the use of posterior hamstring harvest in an active pediatric and adolescent cohort. At times, surgeons may be faced with a challenging anterior harvest due to patient anatomic characteristics, particularly the anatomic features and size of the pes tendons. Clinicians need to have multiple harvest approaches at their disposal. Complications with hamstring harvest such as premature graft transection are more problematic in this population due to higher failure rates with allograft tissue...
June 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29898473/the-effect-of-remnant-tissue-preservation-in-anatomic-double-bundle-acl-reconstruction-on-knee-stability-and-graft-maturation
#6
Tsuneari Takahashi, Masashi Kimura, Keiichi Hagiwara, Takashi Ohsawa, Katsushi Takeshita
Several investigators have developed anterior cruciate ligament reconstructions (ACLR) with remnant tissue preservation (RTP) and have reported better clinical outcomes. However, the effects of RTP remain controversial. To date, no reports have compared both clinical and radiological outcomes of anatomic double-bundle ACLR using the hamstring tendon and outside-in technique with/without RTP. This article evaluates the effectiveness of RTP in ACLR on knee stability and graft maturation. In total, 75 patients with unilateral ACL injury who had undergone anatomic double-bundle ACLR using autografted hamstring tendon either with RTP (Group P, n  = 43) or without (Group N, n  = 32) were enrolled...
June 13, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29896023/comparison-of-outcome-after-acl-reconstruction-in-terms-of-subjective-assessment-of-symptoms-and-function-and-clinical-assessment-of-ligament-stability
#7
Abhinav Bhardwaj, Narender Singh Solanki, Hemant Jain, Kishore Raichandani, Surbhi Raichandani, Vistasp Daruwalla
Background: The knee joint is frequently involved in sports and other injuries with Anterior cruciate ligament being a very common ligament to be injured. The Lachman test, pivot-shift test, and instrumented knee laxity examination are frequently used and reported for evaluation of ACL reconstruction. The aim of this study is to examine and evaluate the relationships between the clinical assessment of ligament stability and subjective assessment of symptoms and function after ACL reconstruction...
April 2018: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29892511/effect-of-acute-augmented-feedback-on-between-limb-asymmetries-and-eccentric-knee-flexor-strength-during-the-nordic-hamstring-exercise
#8
Wade J Chalker, Anthony J Shield, David A Opar, Evelyne N Rathbone, Justin W L Keogh
Background: Hamstring strain injuries (HSI) are one of the most prevalent and serious injuries affecting athletes, particularly those in team ball sports or track and field. Recent evidence demonstrates that eccentric knee flexor weakness and between limb asymmetries are possible risk factors for HSIs. While eccentric hamstring resistance training, e.g. the Nordic hamstring exercise (NHE) significantly increases eccentric hamstring strength and reduces HSI risk, little research has examined whether between limb asymmetries can be reduced with training...
2018: PeerJ
https://www.readbyqxmd.com/read/29888638/strength-and-conditioning-in-adolescent-female-athletes
#9
Corinne Sommi, Frances Gill, Jeffrey D Trojan, Mary K Mulcahey
OBJECTIVES: Despite evidence that strength and conditioning (S&C) programs decrease injury risk and increase sport performance, young females are rarely offered S&C programs comparable to those of their male counterparts. The purpose of this study was to evaluate the current body of available literature regarding S&C in adolescent female athletes, describe potential benefits, and generate recommendations for S&C programs for female adolescent athletes. METHODS: The systematic review was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines...
June 9, 2018: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29884595/the-incidence-and-burden-of-time-loss-injury-in-australian-men-s-sub-elite-football-soccer-a-single-season-prospective-cohort-study
#10
Matthew Whalan, Ric Lovell, Robert McCunn, John A Sampson
OBJECTIVES: This study aimed to conduct the first injury surveillance study in sub-elite football in Australia, using methods from the international football consensus statement. DESIGN: Descriptive epidemiological study. METHODS: 1049 sub-elite football players were recruited during the 2016 season. Injury and exposure data was collected by trained Primary Data Collectors (PDCs) who attended every training session and match. RESULTS: There were 1041 time loss injuries recorded during 52,127h of exposure resulting in an injury incidence rate of 20 injuries/1000h (95% Confidence Interval [CI]: 15...
May 31, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29881886/greater-magnitude-tibiofemoral-contact-forces-are-associated-with-reduced-prevalence-of-osteochondral-pathologies-2-3-years-following-anterior-cruciate-ligament-reconstruction
#11
David John Saxby, Adam L Bryant, Ans Van Ginckel, Yuanyuan Wang, Xinyang Wang, Luca Modenese, Pauline Gerus, Jason M Konrath, Karine Fortin, Tim V Wrigley, Kim L Bennell, Flavia M Cicuttini, Christopher Vertullo, Julian A Feller, Tim Whitehead, Price Gallie, David G Lloyd
PURPOSE: External loading of osteoarthritic and healthy knees correlates with current and future osteochondral tissue state. These relationships have not been examined following anterior cruciate ligament reconstruction. We hypothesised greater magnitude tibiofemoral contact forces were related to increased prevalence of osteochondral pathologies, and these relationships were exacerbated by concomitant meniscal injury. METHODS: This was a cross-sectional study of 100 individuals (29...
June 7, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29879050/effect-of-balance-taping-using-kinesiology-tape-for-a-hamstring-muscle-injury-and-traumatic-knee-pain-in-an-amateur-university-football-player-a-case-report
#12
Sun-Min Lee, Jung-Hoon Lee
RATIONALE: Football players are at high risk for lower extremity injuries because they turn on an axis of rotation, turn while decelerating, and repeatedly jump and land. One of the most common sites of injury is the knee. PATIENT CONCERNS: A 25-year-old amateur university football player with pain in the knee medial area (Visual Analog Scale [VAS] score of 6/10), a hamstring muscle injury (VAS of 5/10), and a Tegner Activity Scale level of 3. DIAGNOSES: He was diagnosed as hamstring muscle injury and traumatic knee pain...
June 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29872355/potential-factors-associated-with-knee-pain-in-cyclists-a-systematic-review
#13
REVIEW
Rodrigo Rico Bini, Alice Flores Bini
The potential factors associated with overuse injuries and pain in cyclists that are supported by evidence remain unclear. Our study aimed at assessing, using a systematic search of the most updated evidence, the main factors related to overuse knee-related pain and/or injuries in cyclists. The search assessed any potential mechanism related to knee pain or injury that could be used in the clinical practice. Databases were searched (i.e., PubMed, Scopus, Web of Science, and EBSCO). Studies were included if they presented results from original studies...
2018: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/29868435/combined-anterior-cruciate-ligament-and-posterolateral-corner-reconstruction-by-hamstring-tendon-autografts-through-a-single-femoral-tunnel-by-graft-to-graft-suspension-and-fixation
#14
Naser M Selim
An untreated posterolateral corner (PLC) injury in patients with a torn anterior cruciate ligament (ACL) may be a leading cause of ACL reconstruction failure. Combined ACL and PLC reconstruction is discussed in few studies in the literature. Femoral tunnel intersection in combined reconstruction has been reported to be high. Short grafts may render combined reconstruction undoable. This Technical Note describes a technique that allows a combined ACL and PLC reconstruction. The ACL graft is a 4-stranded hamstring tendon graft from 1 limb...
May 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29868433/reefing-of-the-posteromedial-capsule-in-anteromedial-rotatory-instability
#15
Christoph Offerhaus, Maurice Balke, Justin W Arner, Volker Musahl, Jürgen Höher
The posterior oblique ligament (POL) is the main component of the posteromedial corner (PMC) of the knee and plays a crucial role in acting as a secondary restraint against translation, rotation, and valgus forces. Injuries to the PMC often occur in association with acute or chronic deficiency of the anterior cruciate ligament and may result in anteromedial rotatory instability. A surgical technique for treatment of acute and chronic injuries of the posteromedial structures was first established by Hughston in 1973...
May 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29868418/all-inside-anterior-cruciate-ligament-reconstruction-as-a-salvage-for-small-or-attenuated-hamstring-grafts
#16
Patrick E Jones, Dustin J Schuett
Anterior cruciate ligament (ACL) tears represent one of the most common sports-related injuries in the young population. There are multiple studies showing higher failure rates in the younger population with an allograft supporting the routine use of an autograft. In addition, higher failure rates have been shown with grafts narrower than 8 mm in diameter. This places the surgeon in an operative dilemma determining what to do with a narrow graft or an attenuated hamstring during harvest. All-inside ACL reconstruction is a promising technique for reliably creating sufficiently wide grafts without the need for allograft augmentation...
May 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29868404/anterior-cruciate-ligament-reconstruction-with-amnion-biological-augmentation
#17
Brittany M Woodall, Nicholas Elena, Joseph T Gamboa, Edward C Shin, Neil Pathare, Patrick J McGahan, James L Chen
Anterior cruciate ligament (ACL) ruptures are common and unfortunate injuries for many athletes. The standard therapy for ACL rupture is ACL reconstruction with either autograft, harvested from hamstring or patellar tendon, or allograft tendon from a tissue donor. Advances in tissue engineering have produced interventions to augment the healing process and may have applications when it comes to ACL reconstruction. In this Technical Note and accompanying video, we describe a simple technique to implant an amnion matrix graft with a tendon graft during ACL reconstruction...
April 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29868394/femoral-fixation-with-curve-cross-pin-system-in-arthroscopic-posterior-cruciate-ligament-reconstruction
#18
Ezio Adriani, Berardino Di Paola, Andrea Alfieri, Edoardo De Fenu
Posterior cruciate ligament (PCL) ruptures account for 1% to 44% of all acute ligament injuries of the knee. In this paper we wanted to try out a system for femural fixation. Hamstring tendons are harvested and standard tibial tunnel is prepared using the transtibial PCL guide; by identifying the PCL footprint, the femoral half tunnel 27 to 30 mm with in-out technique is performed. The femoral rod of a curve cross-pin system is inserted into the anterolateral access within the femoral half tunnel. The guide block is placed 2...
April 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29867521/muscle-activation-during-acl-injury-risk-movements-in-young-female-athletes-a-narrative-review
#19
REVIEW
Jesper Bencke, Per Aagaard, Mette K Zebis
Young, adolescent female athletes are at particular high risk of sustaining a non-contact anterior cruciate ligament (ACL) injury during sport. Through the last decades much attention has been directed toward various anatomical and biomechanical risk factors for non-contact ACL injury, and important information have been retrieved about the influence of external loading factors on ACL injury risk during given sports-specific movements. However, much less attention has been given to the aspect of neuromuscular control during such movements and only sparse knowledge exists on the specific muscle activation patterns involved during specific risk conditions...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29861784/a-review-on-biomechanics-of-anterior-cruciate-ligament-and-materials-for-reconstruction
#20
REVIEW
M Marieswaran, Ishita Jain, Bhavuk Garg, Vijay Sharma, Dinesh Kalyanasundaram
The anterior cruciate ligament is one of the six ligaments in the human knee joint that provides stability during articulations. It is relatively prone to acute and chronic injuries as compared to other ligaments. Repair and self-healing of an injured anterior cruciate ligament are time-consuming processes. For personnel resuming an active sports life, surgical repair or replacement is essential. Untreated anterior cruciate ligament tear results frequently in osteoarthritis. Therefore, understanding of the biomechanics of injury and properties of the native ligament is crucial...
2018: Applied Bionics and Biomechanics
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