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(Anterior cruciate ligament) AND Mri

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https://www.readbyqxmd.com/read/28730928/feasibility-of-na-18-f-pet-ct-and-mri-for-noninvasive-in-vivo-quantification-of-knee-pathophysiological-bone-metabolism-in-a-canine-model-of-post-traumatic-osteoarthritis
#1
Maria I Menendez, Bianca Hettlich, Lai Wei, Michael V Knopp
PURPOSE: To assess and quantify by molecular imaging knee osseous metabolic changes serially in an in vivo canine model of posttraumatic osteoarthritis (PTOA) of the knee utilizing sodium fluoride (Na(18)F) positron emission tomography (PET)/computed tomography (CT) coregistered with magnetic resonance imaging (MRI). MATERIALS AND METHODS: Sodium fluoride PET imaging of 5 canines was performed prior to anterior cruciate ligament transection (ACLT) and 2 times post-ACLT (3 and 12 weeks)...
January 2017: Molecular Imaging
https://www.readbyqxmd.com/read/28710543/acute-non-contact-anterior-cruciate-ligament-tears-are-associated-with-relatively-increased-vastus-medialis-to-semimembranosus-cross-sectional-area-ratio-a-case-control-retrospective-mr-study
#2
Ged G Wieschhoff, Jacob C Mandell, Gregory J Czuczman, Violeta Nikac, Nehal Shah, Stacy E Smith
OBJECTIVE: Hamstring muscle deficiency is increasingly recognized as a risk factor for anterior cruciate ligament (ACL) tears. The purpose of this study is to evaluate the vastus medialis to semimembranosus cross-sectional area (VM:SM CSA) ratio on magnetic resonance imaging (MRI) in patients with ACL tears compared to controls. MATERIALS AND METHODS: One hundred knee MRIs of acute ACL tear patients and 100 age-, sex-, and side-matched controls were included. Mechanism of injury, contact versus non-contact, was determined for each ACL tear subject...
July 15, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28707115/preoperative-magnetic-resonance-imaging-predicts-eligibility-for-arthroscopic-primary-anterior-cruciate-ligament-repair
#3
Jelle P van der List, Gregory S DiFelice
PURPOSE: To assess the role of preoperative magnetic resonance imaging (MRI) on the eligibility for arthroscopic primary anterior cruciate ligament (ACL) repair. METHODS: All patients undergoing ACL surgery between 2008 and 2017 were included. Patients underwent arthroscopic primary repair if sufficient tissue length and quality were present, or they underwent single-bundle ACL reconstruction. Preoperative MRI tear locations were graded with the modified Sherman classification: type I (>90% distal remnant length), type II (75-90%), or type III (25-75%)...
July 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28705571/tunnel-widening-after-acl-reconstruction-with-aperture-screw-fixation-or-all-inside-reconstruction-with-suspensory-cortical-button-fixation-volumetric-measurements-on-ct-and-mri-scans
#4
Raul Mayr, Vinzenz Smekal, Christian Koidl, Christian Coppola, Josef Fritz, Ansgar Rudisch, Christof Kranewitter, René Attal
BACKGROUND: Tunnel widening after anterior cruciate ligament reconstruction (ACLR) is influenced by the surgical and fixation techniques used. Computed tomography (CT) is the most accurate image modality for assessing tunnel widening, but magnetic resonance imaging (MRI) might also be reliable for tunnel volume measurements. In the present study tunnel widening after ACLR using biodegradable interference screw fixation was compared with all-inside ACLR using button fixation, with tunnel volume changes being measured on CT and MRI scans...
July 10, 2017: Knee
https://www.readbyqxmd.com/read/28702800/anterolateral-ligament-injuries-in-knees-with-an-anterior-cruciate-ligament-tear-contribution-of-ultrasonography-and-mri
#5
Marie Faruch Bilfeld, Etienne Cavaignac, Karine Wytrykowski, Olivia Constans, Franck Lapègue, Hélène Chiavassa Gandois, Ahmed Larbi, Nicolas Sans
OBJECTIVES: To describe the pathological appearance of the anterolateral ligament (ALL) on US and MRI in knees with an anterior cruciate ligament (ACL) tear. METHODS: This prospective study included 30 patients who had a suspected acute ACL tear. Their injured and contralateral knees were evaluated with radiography, US and MRI. Two radiologists evaluated the ALL on the MRI and US examinations. Agreement between these examiners' findings was evaluated with Cohen's kappa...
July 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28680898/factors-affecting-the-outcomes-of-arthroscopically-repaired-traumatic-vertical-longitudinal-medial-meniscal-tears
#6
Erdal Uzun, Abdulhamit Misir, Turan Bilge Kizkapan, Mustafa Ozcamdalli, Soner Akkurt, Ahmet Guney
BACKGROUND: Although numerous studies have assessed arthroscopic medial meniscal repairs, few studies have focused on factors affecting outcomes of vertical longitudinal and bucket-handle repairs. PURPOSE: To evaluate the factors affecting clinical outcomes of arthroscopically repaired traumatic vertical longitudinal and bucket-handle medial meniscal tears. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: A total of 223 patients underwent arthroscopic repair for medial meniscal tears between 2007 and 2012; 140 patients had isolated tears or concurrent anterior cruciate ligament (ACL) reconstruction, and 80 patients (76 men, 4 women; mean age, 29...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28680891/is-the-grafted-tendon-shifted-anteriorly-in-the-femoral-tunnel-at-the-postremodeling-phase-after-anterior-cruciate-ligament-reconstruction-a-clinical-mri-study
#7
Jun Onodera, Kazunori Yasuda, Tetsuro Masuda, Yoshie Tanabe, Nobuto Kitamura, Tomonori Yagi, Eiji Kondo
BACKGROUND: Based on previous in vitro studies, it has been commonly believed that during anterior cruciate ligament (ACL) reconstruction with hamstring tendon, the grafted tendon is shifted anteriorly in the tunnel permanently after the graft is anchored to the tunnel wall. However, this has not been proven by in vivo studies. HYPOTHESIS: At 1 year after anatomic double-bundle ACL reconstruction, the grafted tendons may not be shifted anteriorly in the femoral tunnel but anchored to the bony wall at the center of the tunnel...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28680889/the-location-of-anterior-cruciate-ligament-tears-a-prevalence-study-using-magnetic-resonance-imaging
#8
Jelle P van der List, Douglas N Mintz, Gregory S DiFelice
BACKGROUND: Over the past decade, there has been a resurgence of interest in anterior cruciate ligament (ACL) preservation. Proximal and distal avulsion tears have been treated with arthroscopic primary repair, while augmented repair, remnant tensioning, primary repair with biological scaffold, and remnant preservation have been proposed for different types of midsubstance tears. Currently, the incidence of these different tear types is unknown. PURPOSE: To propose a magnetic resonance imaging (MRI) classification system for different tear types based on clinical relevance and to assess the distribution of these different ACL tear types...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28680888/early-graft-tunnel-healing-after-anterior-cruciate-ligament-reconstruction-with-intratunnel-injection-of-bone-marrow-mesenchymal-stem-cells-and-vascular-endothelial-growth-factor
#9
Rosy Setiawati, Dwikora Novembri Utomo, Fedik Abdul Rantam, Nadia Nastassia Ifran, Nicolaas C Budhiparama
BACKGROUND: Bone marrow mesenchymal stem cells (BM-MSCs) are multipotent adult stem cells and have become an important source of cells for engineering tissue repair and cell therapy. Vascular endothelial growth factor (VEGF) promotes angiogenesis and contributes fibrous integration between tendon and bone during the early postoperative stage. Both MSCs and VEGF can stimulate cell proliferation, differentiation, and matrix deposition by enhancing angiogenesis and osteogenesis of the graft in the tunnel...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28655628/tunnel-positioning-assessment-after-anterior-cruciate-ligament-reconstruction-at-12-months-comparison-between-3d-ct-and-3d-mri-a-pilot-study
#10
Emmanuel Ducouret, Philippe Loriaut, Patrick Boyer, Anne Perozziello, Lionel Pesquer, Charbel Mounayer, Benjamin Dallaudiere
BACKGROUND: Tunnel positioning assessment is a major issue after anterior cruciate ligament (ACL) reconstruction surgery. Historically, it used plain X-ray and, more recently, CT with 3D reconstruction. MRI is a reliable method of assessing ACL graft integrity and postoperative complications. To our knowledge, there have been no studies of efficacy in tunnel positioning assessment. The aim of this study was to assess the efficacy of 3D MRI in assessing femoral and tibial tunnel positioning after ACL reconstruction...
June 24, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28654381/preclinical-multimodal-molecular-imaging-using-18-f-fdg-pet-ct-and-mri-in-a-phase-i-study-of-a-knee-osteoarthritis-in-in-vivo-canine-model
#11
Maria I Menendez, Bianca Hettlich, Lai Wei, Michael V Knopp
The aim of this study was to use a multimodal molecular imaging approach to serially assess regional metabolic changes in the knee in an in vivo anterior cruciate ligament transection (ACLT) canine model of osteoarthritis (OA). Five canine underwent ACLT in one knee and the contralateral knee served as uninjured control. Prior, 3, 6, and 12 weeks post-ACLT, the dogs underwent (18)F-fluoro-d-glucose ((18)F-FDG) positron emission tomography (PET)/computed tomography (CT) and magnetic resonance imaging (MRI). The MRI was coregistered with the PET/CT, and 3-dimensional regions of interest (ROIs) were traced manually and maximum standardized uptake values (SUVmax) were evaluated...
January 1, 2017: Molecular Imaging
https://www.readbyqxmd.com/read/28647841/anterior-cruciate-ligament-tibial-insertion-site-is-elliptical-or-triangular-shaped-in-healthy-young-adults-high-resolution-3-t-mri-analysis
#12
Yasutaka Tashiro, Gian Andrea Lucidi, Tom Gale, Kanto Nagai, Elmar Herbst, James J Irrgang, Yasuharu Nakashima, William Anderst, Freddie H Fu
PURPOSE: To clarify the morphology of anterior cruciate ligament (ACL) tibial insertion site in healthy young knees using high-resolution 3-T MRI. METHODS: Subjects were 50 ACL-reconstructed patients with a mean age of 21.4 ± 6.8 years. The contralateral healthy knees were scanned using high-resolution 3-T MRI. The tibial insertion sites of the anteromedial (AM) and posterolateral (PL) bundle fibres, and the ACL attachment on the anterior horn of lateral meniscus (AHLM) were segmented from the MR images, and 3D models were reconstructed to evaluate the morphology...
June 24, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28646381/stenotic-intercondylar-notch-type-is-correlated-with-anterior-cruciate-ligament-injury-in-female-patients-using-magnetic-resonance-imaging
#13
Theodoros Bouras, Peter Fennema, Stephen Burke, Hilary Bosman
PURPOSE AND HYPOTHESIS: The principal purpose of this paper was to identify whether femoral notch morphology was different in females without anterior cruciate ligament (ACL) injury from those with ACL injury. Magnetic resonance imaging (MRI) was used to assess the femoral notch type, notch width index and 'α angle' in female patients and measure these differences. METHODS: This is a retrospective case control study of 119 female patients, 58 with ACL injury and 61 patients without ACL injury who underwent knee MRI between March 2014 and April 2016...
June 23, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28634621/role-of-mri-in-predicting-meniscal-tear-reparability
#14
Paolo Florent Felisaz, Francesco Alessandrino, Simone Perelli, Giacomo Zanon, Francesco Benazzo, Fabrizio Calliada, Luigi Sammarchi
OBJECTIVE: To elucidate the role of MRI in predicting meniscal tear reparability according to tear type and location in relation to vascular zones. MATERIALS AND METHODS: In this retrospective study, two readers evaluated 79 pre-surgical MRIs of meniscal tears arthroscopically treated with meniscectomy or meniscal repair. Tears were classified according to type into vertical, horizontal, radial, complex, flaps and bucket handle and were considered reparable if the distance measured from the tear to the menisco-capsular junction was less than or equal to 5 mm...
June 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28612204/three-dimensional-isotropic-magnetic-resonance-imaging-can-provide-a-reliable-estimate-of-the-native-anterior-cruciate-ligament-insertion-site-anatomy
#15
Daisuke Araki, Eric Thorhauer, Scott Tashman
PURPOSE: This study quantified the error in anterior cruciate ligament (ACL) insertion site location and area estimated from three-dimensional (3D) isotropic magnetic resonance imaging (MRI) by comparing to native insertion sites determined via 3D laser scanning. METHODS: Isotropic 3D DESS MRI was acquired from twelve fresh-frozen, ACL-intact cadaver knees. ACL insertion sites were manually outlined in each MRI slice, and the resulting contours combined to determine the 3D insertion site shape...
June 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28603610/does-additional-reconstruction-of-the-anterolateral-ligament-during-a-primary-anterior-cruciate-ligament-reconstruction-affect-tibial-rotational-laxity-a-case-series
#16
Rohi Shah, Runveer Singh, Clodagh Dugdale, Guido Geutjens
BACKGROUND: The current evidence suggests that rotational stability in not restored in patients with anterior cruciate ligament (ACL) ruptures, despite reconstructive surgery. The graded pivot-shift is a useful clinical test to delineate extent of ligamentous laxity within the knee. Given its lateralised position, we hypothesized that reconstruction of the anterolateral ligament (ALL) would provide restraint to excessive internal rotation, restoring rotational stability. METHODS: 10 patients with MRI confirmed diagnosis of an isolated ACL rupture were included...
July 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28551834/increased-bone-tracer-uptake-in-symptomatic-patients-with-acl-graft-insufficiency-a-correlation-of-mri-and-spect-ct-findings
#17
Dominic T Mathis, Anna Hirschmann, Anna L Falkowski, Tommi Kiekara, Felix Amsler, Helmut Rasch, Michael T Hirschmann
PURPOSE: Magnetic resonance imaging (MRI) and single-photon emission computerised tomography/computerised tomography (SPECT/CT) are used as diagnostic tools in symptomatic patients after reconstruction of the anterior cruciate ligament (ACL). The benefit of SPECT/CT in comparison with MRI is under debate. The purpose of this study was to investigate whether and how bone tracer uptake (BTU) intensity and distribution in SPECT/CT correlate with MRI findings in symptomatic patients after ACL reconstruction...
May 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28534321/does-anatomic-single-bundle-acl-reconstruction-using-hamstring-autograft-produce-anterolateral-meniscal-root-tearing
#18
Sebastián Irarrázaval, Angel Masferrer-Pino, Maximiliano Ibañez, Tamer M A Shehata, María Naharro, Joan C Monllau
BACKGROUND: To determine if tibial tunnel reaming during anatomic single-bundle anterior cruciate ligament (ACL) reconstruction using hamstring autograft can result in anterolateral meniscal root injury, as diagnosed by magnetic resonance imaging (MRI). METHODS: A case series of 104 primary anatomic single-bundle ACL reconstructions using hamstring autograft was retrospectively reviewed. Pre- and post-operative (>1 year) MRIs were radiologically evaluated for each patient, with a lateral meniscus extrusion > 3 mm at the level of the medial collateral ligament midportion on a coronal MRI, to establish anterolateral meniscal root injury...
December 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28520812/the-effect-of-platelet-rich-plasma-on-osseous-healing-in-dogs-undergoing-high-tibial-osteotomy
#19
Samuel P Franklin, Emily E Burke, Shannon P Holmes
OBJECTIVES: The purpose of this study was to investigate whether platelet-rich plasma (PRP) enhances osseous healing in conjunction with a high tibial osteotomy in dogs. STUDY DESIGN: Randomized controlled trial. METHODS: Sixty-four client-owned pet dogs with naturally occurring rupture of the anterior cruciate ligament and that were to be treated with a high tibial osteotomy (tibial plateau leveling osteotomy) were randomized into the treatment or control group...
2017: PloS One
https://www.readbyqxmd.com/read/28520678/anterior-cruciate-ligament-injury-at-the-time-of-anterior-tibial-spine-fracture-in-young-patients-an-observational-cohort-study
#20
Meredith H Mayo, Justin J Mitchell, Derek P Axibal, Jorge Chahla, Claire Palmer, Armando F Vidal, Jason T Rhodes
BACKGROUND: Anterior tibial spine fractures (ATSF) in the skeletally immature parallel anterior cruciate ligament (ACL) tears in adult patients, yet these injuries are generally regarded as mutually exclusive. Biomechanical analysis suggests that intrinsic ACL damage occurs during ATSF, and long-term clinical studies demonstrate residual anteroposterior knee laxity following ATSF. We aim to describe prevalence, demographics, and characteristics of pediatric patients who sustained ATSF with concomitant ACL injury...
May 17, 2017: Journal of Pediatric Orthopedics
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