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Acl And Knee

M N J Keizer, E Otten
Anterior tibia translation (ATT) is mainly prevented by the anterior cruciate ligament. Passive ATT tests are commonly used to diagnose an anterior cruciate ligament (ACL) injury, to select patients for an ACL reconstruction (ACLR), and as an outcome measure after an ACLR. The aim of this review was to present an overview of possible factors determining ATT. A second purpose was to give a summary of the ATT measured in the literature in healthy, ACL-injured and ACLR knees and a comparison between those groups...
October 16, 2018: Musculoskeletal Surgery
Christopher Kuenze, Brian Pietrosimone, Caroline Lisee, Margaret Rutherford, Tom Birchmeier, Adam Lepley, Joseph Hart
PURPOSE: To investigate the effects of graft source, time since surgery, age, and sex on unilateral and symmetry-based measures of knee extension strength among individuals with ACL reconstruction (ACLR). METHODS: Three hundred and eight individuals aged 13-40 years old with primary, unilateral ACLR in the last 60 months were enrolled in this multi-site clinical measurement study. Participants completed bilateral knee extension maximal voluntary isometric contraction (MVIC) torque assessments which were normalized to body mass (Nm/kg) and limb symmetry indices (LSI) were calculated...
October 16, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Yong Woo An, Andrea DiTrani Lobacz, Tim Lehmann, Jochen Baumeister, William C Rose, Jill S Higginson, Jeffrey Rosen, Charles Buz Swanik
The purpose of this study was to identify how the brain simultaneously perceives proprioceptive input during joint loading in anterior cruciate ligament reconstruction (ACLR) patients, when compared to healthy controls. Seventeen ACLR patients (ACLR) and seventeen controls (CONT) were tested for the somatosensory cortical activation using electroencephalography (EEG) while measuring knee laxity using a knee arthrometer. The relationship between cortical activation and joint laxity within group was also examined...
October 16, 2018: Scandinavian Journal of Medicine & Science in Sports
Enda King, Chris Richter, Andy Franklyn-Miller, Katherine Daniels, Ross Wadey, Mark Jackson, Ray Moran, Siobhan Strike
Whilst anterior cruciate ligament injury commonly occurs during change of direction (CoD) tasks, there is little research on how athletes execute CoD after anterior cruciate ligament reconstruction (ACLR). The aims of this study were to determine between-limb and between-test differences in performance (time) and joint kinematics and kinetics during planned and unplanned CoD. One hundred and fifty-six male subjects carried out 90° maximal effort, planned and unplanned CoD tests in a 3D motion capture laboratory 9 months after ACLR...
September 29, 2018: Journal of Biomechanics
Theo Jaspers, Jan Taeymans, Anja Hirschmüller, Heiner Baur, Roger Hilfiker, Slavko Rogan
BACKGROUND: This systematic review and meta-analysis evaluates the results of empirical studies on the effects of CPM on rehabilitation after ACL reconstruction. The research question was: what are the effects of CPM on ROM, swelling and pain after ACL reconstruction? PATIENTS/MATERIAL AND METHODS: We searched in MEDLINE, Embase, CINAHL, Cochrane and PEDro up to January 2018. Standardized mean differences (SMD) were expressed as Hedges' g, in order to correct for overestimation of the true effect in small study samples...
October 15, 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
Roman Frederik Karkosch, Max Ettinger, Samuel Bachmaier, Coen A Wijdicks, Tomas Smith
BACKGROUND: This biomechanical cadaveric in vitro study aimed to evaluate and compare the dynamic elongation behavior and ultimate failure strength of tibial adjustable-length loop cortical button versus interference screw fixation in quadriceps tendon-based anterior cruciate ligament reconstruction. METHODS: Sixteen human quadriceps tendons were harvested and fixed into porcine tibiae using either biodegradable interference screw (n = 8) or adjustable loop device (n = 8) fixation...
October 8, 2018: Clinical Biomechanics
Andrew N Pike, Jeanne C Patzkowski, Craig R Bottoni
Anterior cruciate ligament (ACL) ruptures are commonly associated with meniscal and articular cartilage injuries, and the presence of these defects influences both short- and long-term outcomes. Multiple variables are predictive of this pathology including time from injury, age, and sex. Revision ACL reconstructions demonstrate higher rates of chondral injury than primary reconstructions. Menisci are important secondary stabilizers of the knee in the setting of ACL deficiency, and specific tear types are more consistently associated with ACL injury...
October 12, 2018: Journal of the American Academy of Orthopaedic Surgeons
Bailey A Tadlock, Lauren A Pierpoint, Tracey Covassin, Shane V Caswell, Andrew E Lincoln, Zachary Y Kerr
Research on knee internal derangement (KID) injuries in high school girls' lacrosse is limited, yet needed to identify sport-specific risk factors. This study describes the epidemiology of KID injuries in United States high school girls' lacrosse during the 2008/09-2016/17 academic years. Athletic trainers (ATs) reported injury and athlete-exposure (AE) data to the High School Reporting Information Online (RIO) surveillance system. KID injuries involved the anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), medial collateral ligament (MCL), lateral collateral ligament (LCL), and menisci...
October 14, 2018: Research in Sports Medicine
Alexandros P Apostolopoulos, R K Yallapragada, I Katsougrakis, S Khan, G Tselentakis
The frequency of anterior cruciate ligament (ACL) reconstruction performed worldwide has been significantly increasing per year. Despite the common nature of the procedure, controversy remains regarding the natural history of ACL injuries, surgical technique, graft choice, and long-term outcomes. We present a case report of a 33-year-old male who had a history of an ACL reconstruction that was performed 12 years ago using bone patella tendon bone (BPTB) graft, by using a press-fit femoral technique. He was referred to our outpatient department due to a re-rupture of his ACL following a football injury...
2018: Journal of Long-term Effects of Medical Implants
Özge Çınar-Medeni, Gulcan Harput, Gul Baltaci
The purposes of this study were to analyse (a) if "angle-specific" (AS) flexor and extensor torques were different between ACL-reconstructed and uninvolved limbs, (b) the difference in peak torque occurrence angles for concentric and eccentric knee flexor and extensor torques between involved and uninvolved limbs and (c) if AS concentric and eccentric knee flexor and extensor torques are determinants of performance in the "single-leg hop test" (SLHT) and "vertical jump and reach test" (VJRT) in ACL-reconstructed legs...
October 13, 2018: Journal of Sports Sciences
Prabath C A M Lodewijks, Diyar Delawi, Thomas L Bollen, Gawein R Dijkhuis, Nienke Wolterbeek, Jacco A C Zijl
PURPOSE: To describe the validity and inter- and intra-observer reliability of the lateral femoral notch sign (LFNS) as measured on conventional radiographs for diagnosing acute anterior cruciate ligament (ACL) injury. METHODS: Patients (≤ 45 years) with a traumatic knee injury who underwent knee arthroscopy and had preoperative radiographs were retrospectively screened for this case-control study. Included patients were assigned to the ACL injury group (n = 65) or the control group (n = 53) based on the arthroscopic findings...
October 13, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Peng-Fei Han, Lei Wei, Zhi-Qing Duan, Zhi-Liang Zhang, Tao-Yu Chen, Jian-Gong Lu, Rui-Peng Zhao, Xiao-Ming Cao, Peng-Cui Li, Zhi Lv, Xiao-Chun Wei
BACKGROUND: It has been noted that anterior cruciate ligament (ACL) injury-induced cartilage degeneration is the key risk factor for post-traumatic osteoarthritis (PTOA). However, whether the cartilage degeneration after ACL injury is caused by inflammation, abnormal biomechanics or both remains largely unknown, as there has been no animal model for separating the two factors so far. METHODS: Eighteen-month-old female mini-pigs were divided into an "idealized" anterior cruciate ligament reconstruction (IACLR) group and a control group (n = 16 limbs per group)...
October 11, 2018: International Immunopharmacology
C Deckers, P Stephan, K E Wever, C R Hooijmans, G Hannink
OBJECTIVE: It is unclear if anterior cruciate ligament (ACL) reconstruction can prevent the onset of degenerative changes in the knee. Previous studies were inconclusive on this subject. The aim of this study was to systematically review all studies on the effect of ACL reconstruction on articular cartilage in animals. DESIGN: Pubmed and Embase were searched to identify all original articles concerning the effect of ACL reconstruction on articular cartilage compared with both its positive (ACL transection) and negative (sham and/or non-operated) control in animals...
October 11, 2018: Osteoarthritis and Cartilage
Alexander Barié, Michael Köpf, Ayham Jaber, Babak Moradi, Holger Schmitt, Jürgen Huber, Nikolaus Alexander Streich
BACKGROUND: The use of a quadriceps tendon-patellar bone (QTPB) autograft provides an alternative procedure in primary reconstruction of the anterior cruciate ligament (ACL). Using the press-fit technique for femoral fixation and knotting over a bone bridge as well as additional spongiosa filling for tibial fixation can completely eliminate the need for fixation implants. The objective of this study was to evaluate the long-term clinical, functional and radiological results of this operating method...
October 12, 2018: BMC Musculoskeletal Disorders
Yuichi Hoshino, Nobuaki Miyaji, Kyohei Nishida, Yuichiro Nishizawa, Daisuke Araki, Noriyuki Kanzaki, Kenichiro Kakutani, Takehiko Matsushita, Ryosuke Kuroda
PURPOSE: Concomitant meniscus injuries in the anterior cruciate ligament (ACL) have been suggested to exacerbate rotational laxity. However, the effect is supposed to be so small, if any, that some quantitative pivot-shift measurement is needed. The purpose of this prospective study was to determine the effect of meniscus tear on rotational laxity in ACL-deficient knees by an quantitative measurement. It was hypothesized that a concomitant meniscus tear, especially a lateral one, would induce greater pivot shift...
October 11, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Ehab Abdelbaki Hussin, Asim Aldaheri, Hatem Alharbi, Hazem A Farouk
Purpose: This study compared the accessory anteromedial portal (AAMP) and the modified transtibial technique (MTTT)" for single-bundle anterior cruciate ligament (ACL) reconstruction. Patients and methods: Sixty active adult patients with ACL tear were randomly assigned into two equal groups who were treated surgically. One group was operated on using AAMP and the other group through MTTT. Both the groups had the same postoperative course and were followed for 1 year after surgery...
2018: Open Access Journal of Sports Medicine
Yuya Kodama, Takayuki Furumatsu, Tomohito Hino, Yusuke Kamatsuki, Yoshiki Okazaki, Shin Masuda, Yuki Okazaki, Toshifumi Ozaki
BACKGROUND: Cyclops nodule formation is a serious complication after anterior cruciate ligament (ACL) reconstruction. The purpose of our study was to investigate whether an increase in thymol turbidity test (TTT) values is involved in the development of cyclops nodule formation or cyclopoid scar formation following ACL reconstruction. METHODS: Between 2011 and 2014, 120 cases underwent outside-in ACL reconstruction. Forty-seven patients who had high TTT values were individually matched for age, sex, body mass index, and meniscus injury to a low TTT value group of 47 patients...
October 12, 2018: BMC Musculoskeletal Disorders
Amélie Leroux, Christophe Egles, Véronique Migonney
The anterior cruciate ligament rupture is one of the most common sport injuries. Due to ligaments' poor healing capacity, surgical intervention is often required. Nowadays, these injuries are managed using replacement autografts or to a lesser extent using artificial ligaments. With the expansion of tissue engineering, more recent researches focus on the development of biodegradable structures that could allow graft functioning while enhancing host integration. The main challenge is to develop a structure that gradually loses its mechanical properties when at the same time the neo-ligament gains in solidity...
2018: PloS One
Pedro Baches Jorge, Diego Escudeiro, Nilson Roberto Severino, Cláudio Santili, Ricardo de Paula Leite Cury, Aires Duarte Junior, Luiz Gabriel Betoni Guglielmetti
The aim of this study was to review and update the literature in regard to the anatomy of the femoral origin of the ACL, the concept of the double band and its respective mechanical functions, and the concept of direct and indirect fibres in the ACL insertion. These topics will be used to help determine which might be the best place to position the femoral tunnel and how this should be achieved, based on the idea of functional positioning, that is, where the most important ACL fibres in terms of knee stability are positioned...
2018: BMJ Open Sport & Exercise Medicine
Wei-Hsiu Hsu, Chun-Hao Fan, Pei-An Yu, Chi-Lung Chen, Liang-Tseng Kuo, Robert Wen-Wei Hsu
BACKGROUND: Increased body mass index (BMI) has been associated with poorer function in patients who have undergone anterior cruciate ligament (ACL) reconstruction. However, the effect of high BMI on muscle strength in these patients remained unclear. The current study aimed to compare knee muscle strength and Knee injury and Osteoarthritis Outcome Score (KOOS) in ACL-reconstructed patients with a variety of different BMIs. METHODS: From November 2013 to March 2016, we prospectively enrolled 30 patients who underwent ACL reconstruction (18-60 years of age)...
October 10, 2018: BMC Musculoskeletal Disorders
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