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(Anterior cruciate ligament) AND Mri

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https://www.readbyqxmd.com/read/28919498/accelerated-return-to-sport-after-acl-reconstruction-and-early-knee-osteoarthritis-features-at-1-year-an-exploratory-study
#1
Adam G Culvenor, Brooke E Patterson, Ali Guermazi, Hayden G Morris, Timothy S Whitehead, Kay M Crossley
BACKGROUND: A timely return to competitive sport is a primary goal of anterior cruciate ligament reconstruction (ACLR). It is not known if an accelerated return-to-sport increases the risk of early-onset knee osteoarthritis (KOA). OBJECTIVE: To determine whether an accelerated return-to-sport post-ACLR (i.e., <10 months) is associated with increased odds of early KOA features on MRI 1-year post-surgery, and to evaluate the relationship between an accelerated return-to-sport and early KOA features stratified by type of ACL injury (isolated or concurrent chondral/meniscal injury) and lower-limb function (good or poor)...
September 14, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28903010/effect-of-loading-on-in-vivo-tibiofemoral-and-patellofemoral-kinematics-of-healthy-and-acl-reconstructed-knees
#2
Jarred M Kaiser, Michael F Vignos, Richard Kijowski, Geoffrey Baer, Darryl G Thelen
BACKGROUND: Although knees that have undergone anterior cruciate ligament reconstruction (ACLR) often exhibit normal laxity on clinical examination, abnormal kinematic patterns have been observed when the joint is dynamically loaded during whole body activity. This study investigated whether abnormal knee kinematics arise with loading under isolated dynamic movements. HYPOTHESIS: Tibiofemoral and patellofemoral kinematics of ACLR knees will be similar to those of the contralateral uninjured control knee during passive flexion-extension, with bilateral differences emerging when an inertial load is applied...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28898105/gait-characteristics-associated-with-a-greater-increase-in-medial-knee-cartilage-t1%C3%AF-and-t2-relaxation-times-in-patients-undergoing-anterior-cruciate-ligament-reconstruction
#3
Hsiang-Ling Teng, Daniel Wu, Favian Su, Valentina Pedoia, Richard B Souza, C Benjamin Ma, Xiaojuan Li
BACKGROUND: Osteoarthritis of the medial tibiofemoral joint (MTFJ) is prevalent among patients undergoing anterior cruciate ligament reconstruction (ACLR). Magnetic resonance T1ρ and T2 relaxation times provide noninvasive methods to quantify early cartilage degeneration. Altered sagittal-plane gait biomechanics have been observed after ACLR, but their associations with longitudinal changes in MTFJ cartilage T1ρ and T2 remain unclear. Hypothesis/Purpose: To examine whether the peak knee flexion moment (KFM), knee flexion angle (KFA), and vertical ground-reaction force (vGRF) during gait are associated with prospective changes in medial tibiofemoral cartilage T1ρ and T2 in ACL-reconstructed knees and to compare these gait characteristics between patients undergoing ACLR and healthy control participants...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28873348/management-of-traumatic-meniscal-tear-and-degenerative-meniscal-lesions-save-the-meniscus
#4
REVIEW
P Beaufils, N Pujol
Meniscectomy remains one of the most frequent orthopedic procedures, despite meniscal sparing having been advocated for several decades now. Incidence is excessive in the light of scientifically robust studies demonstrating the interest of meniscal repair or of non-operative treatment for traumatic tear and of non-operative treatment for degenerative meniscal lesions. It is high time that the paradigm shifted, in favor of meniscal preservation. In traumatic tear, and most particularly longitudinal vertical tear in vascularized zones, repair shows a high success rates in terms of recovery time, functional outcome and cartilage protection...
September 2, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28858544/evaluation-of-selective-bundle-injury-to-the-anterior-cruciate-ligament-t2-weighted-fast-spin-echo-3-t-mri-with-reformatted-3d-oblique-isotropic-vista-versus-2d-technique
#5
Jung Eun Lee, Hee Jin Park, So Yeon Lee, Jin Hwan Ahn, Jai Hyung Park, Ji Yeon Park
OBJECTIVE: The purpose of this study was to compare the diagnostic utility of oblique sagittal and oblique coronal 3D volume isotropic turbo spin-echo acquisition (VISTA) images with that of 2D fast spin-echo (FSE) T2-weighted images in the diagnosis of selective bundle tears of the anterior cruciate ligament (ACL). MATERIALS AND METHODS: This retrospective study included 56 patients who underwent 2D FSE and 3D VISTA 3-T MRI of the knee before arthroscopic procedures...
August 31, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28856482/hyperextension-injuries-of-the-knee-do-patterns-of-bone-bruising-predict-soft-tissue-injury
#6
A M Ali, J K Pillai, V Gulati, C E R Gibbons, B J Roberton
OBJECTIVE: To establish whether patterns of soft tissue injury following knee hyperextension are associated with post-traumatic 'bone bruise' distribution. MATERIALS AND METHODS: Patients with a knee MRI within one year of hyperextension injury were identified at our institution over a 7 year period. MRIs, plain radiographs and clinical details of these patients were reviewed. RESULTS: Twenty-five patients were identified (median time from injury to MRI = 24 days)...
August 31, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28854766/one-year-serial-follow-up-magnetic-resonance-imaging-study-of-rigidfix-for-femoral-fixation-in-anterior-cruciate-ligament-reconstruction
#7
Jung Ho Noh, Jae Woo Lee
Purpose: To assess graft slippage at the site of femoral fixation by follow-up magnetic resonance imaging (MRI) after anterior cruciate ligament (ACL) reconstruction with a four-strand autogenous hamstring tendon using RigidFix (DePuy Mitek). Materials and Methods: Twenty-one subjects diagnosed with ACL rupture underwent ACL reconstruction using hamstring autograft with the transtibial technique. RigidFix was used for femoral fixation and Intrafix and washer screw were used for tibial fixation...
September 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28845301/limited-evidence-that-the-presence-of-a-bone-bruise-alone-affects-the-clinical-outcome-of-surgically-reconstructed-anterior-cruciate-ligaments-a-systematic-review
#8
Brian E Walczak, Cody Lukes, Ned Amendola, Warren R Dunn
IMPORTANCE: Anterior cruciate ligament (ACL) injury can be a devastating injury that without surgery may lead to chronic instability. Although surgical reconstruction recreates the stabilising constraint of the native ACL, postoperative pain and subsequent arthrosis may follow. OBJECTIVES: The primary objective of this systematic review is to determine whether the presence of a bone bruise following ACL rupture adversely affects the clinical outcomes following surgical reconstruction...
July 2017: Journal of ISAKOS
https://www.readbyqxmd.com/read/28840143/allograft-maturation-after-reconstruction-of-the-anterior-cruciate-ligament-is-dependent-on-graft-parameters-in-the-sagittal-plane
#9
Michael Rose, Dennis Crawford
BACKGROUND: Allograft healing (ligamentization) after reconstruction of the anterior cruciate ligament (ACL) is dependent on multiple factors, including tissue processing, host biologic environment, and biomechanical stressors. Magnetic resonance imaging (MRI) can be used to assess graft maturation after ACL reconstruction. HYPOTHESIS: A significant difference will exist in the MRI analysis between 2 distinct allograft constructs. Specifically, the MRI signal-to-noise quotient (SNQ) value will be smaller in quadrupled hamstring tendon (HT) allografts compared with doubled tibialis anterior (TA) allografts due to the difference in graft geometry (surface area-to-volume ratio)...
August 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28831524/-meniscal-root-lesions-clinical-relevance-and-treatment
#10
REVIEW
S Kopf, C Stärke, R Becker
Meniscal roots play an important role in load distribution of the tibiofemoral knee joint. Thus, meniscal root tears are severe injuries of the knee, which significantly expose cartilage to increased stress. Two entities are distinguished: (i) acute root tears that mainly affect the posterolateral root and often occur with ruptures of the anterior cruciate ligament; and (ii) chronic, degenerative root tears that mainly affect the posteromedial root. For diagnosis of both entities, the patient's medical history, a knee examination and especially MRI play key roles...
August 22, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28828058/arthroscopic-knee-anatomy-in-young-achondroplasia-patients
#11
M Del Pilar Duque Orozco, N C Record, K J Rogers, M B Bober, W G Mackenzie, A Atanda
PURPOSE: Achondroplasia is the most common form of skeletal dysplasia, affecting more than 250 000 individuals worldwide. In these patients, the developing knee undergoes multiple anatomical changes. The purpose of this study was to characterise the intra-articular knee anatomy in children with achondroplasia who underwent knee arthroscopy. METHODS: Records of achondroplasia patients who underwent knee arthroscopy between 2009 and 2014 were reviewed. Demographic data, operative reports, follow-up notes, MRI and arthroscopy images were reviewed...
June 1, 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28822632/the-heel-height-test-a-novel-tool-for-the-detection-of-combined-anterior-cruciate-ligament-and-fibular-collateral-ligament-tears
#12
Mark E Cinque, Andrew G Geeslin, Jorge Chahla, Gilbert Moatshe, Jonas Pogorzelski, Nicholas N DePhillipo, Robert F LaPrade
PURPOSE: To determine the exact value of side-to-side difference (SSD) in heel height that was associated with combined anterior cruciate ligament (ACL) and fibular collateral ligament (FCL) tears (compared with an isolated ACL tear) and determine the clinical utility of heel height SSD in the assessment of this injury pattern. METHODS: Two patient groups were identified: (1) patients with isolated ACL tears and (2) patients with combined ACL-FCL tears but without additional collateral or cruciate ligament injuries...
August 16, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28809636/-arthroscopic-finding-of-knee-joint-in-relation-to-age-and-its-comparison-with-pre-operative-clinical-finding-a-retrospective-study
#13
P Látal, K Šimeček, M Kloub
PURPOSE OF THE STUDY In the retrospective study of two South Bohemian centres we present the comparison of pre-operative anamnestic clinical signs in relation to the arthroscopic intraoperative finding. The obtained data is used also to evaluate the arthroscopic finding in relation to age and sex. MATERIAL AND METHODS The arthroscopic findings of patients who underwent surgery in 2013-2014 period (1.1.2013-31.12.2014) at the Department of Trauma Surgery of České Budějovice Hospital, a.s. and in 2014 (1.1...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28807564/reduced-metallic-artefacts-in-3%C3%A2-t-knee-mri-using-fast-spin-echo-multi-point-dixon-compared-to-fast-spin-echo-t2-weighted-sequences
#14
H J Park, S Y Lee, S H Choi, H P Hong, Y J Choi, M S Kim
AIM: To compare multi-point Dixon magnetic resonance imaging (MRI) and fast spin-echo (FSE) T2-weighted imaging (WI) with regard to the size of metallic artefacts when imaging the knee joint. MATERIALS AND METHODS: A total of 42 patients who underwent anterior cruciate ligament (ACL) reconstruction and follow-up imaging with 3 T MRI using the multi-point Dixon technique was included in this retrospective study. The maximal distance of the image distortion area around the metallic artefact was measured (interference screw of femoral tunnel area) on sagittal images of both FSE T2WI (T2WI and fat-suppressed [FS] T2WI) and multi-point Dixon (water only image and in-phase image) sequences...
August 12, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28790406/the-diagnostic-accuracy-of-magnetic-resonance-imaging-for-anterior-cruciate-ligament-injury-in-comparison-to-arthroscopy-a-meta-analysis
#15
Kun Li, Jun Du, Li-Xin Huang, Li Ni, Tao Liu, Hui-Lin Yang
We performed this meta-analysis to examine the diagnostic accuracy of MRI for the diagnosis of anterior cruciate ligament (ACL) injury in comparison to arthroscopy. We also compared the diagnostic accuracy of MRI with magnetic field intensities (MFI) greater than or equal to 1.5T with those below 1.5T, in addition to different MRI sequences. Studies relevant to the diagnosis of ACL injury by MRI and arthroscopy were analyzed. Computer and manual retrieval were carried out on studies published between January 1, 2006 and May 31, 2016...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28777283/the-locations-of-anterior-cruciate-ligament-tears-in-pediatric-and-adolescent-patients-a-magnetic-resonance-study
#16
Jelle P van der List, Douglas N Mintz, Gregory S DiFelice
BACKGROUND: Recently, a resurgence of interest has been noted in anterior cruciate ligament (ACL) preservation in pediatric and adolescent patients. Different tear types, defined by their tear location, require different preservation techniques: proximal and distal avulsion tears can be treated with arthroscopic primary repair, whereas primary repair with biological scaffold has been proposed for midsubstance tears. The goal of this study was to assess the distribution of different tear types in pediatric and adolescent patients, as these are currently unknown...
August 2, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28768528/safety-tolerability-clinical-and-joint-structural-outcomes-of-a-single-intra-articular-injection-of-allogeneic-mesenchymal-precursor-cells-in-patients-following-anterior-cruciate-ligament-reconstruction-a-controlled-double-blind-randomised-trial
#17
Yuanyuan Wang, Andrew Shimmin, Peter Ghosh, Paul Marks, James Linklater, David Connell, Stephen Hall, Donna Skerrett, Silviu Itescu, Flavia M Cicuttini
BACKGROUND: Few clinical trials have investigated the safety and efficacy of mesenchymal stem cells for the management of post-traumatic osteoarthritis. The objectives of this pilot study were to determine the safety and tolerability and to explore the efficacy of a single intra-articular injection of allogeneic human mesenchymal precursor cells (MPCs) to improve clinical symptoms and retard joint structural deterioration over 24 months in patients following anterior cruciate ligament (ACL) reconstruction...
August 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28768432/effects-of-surgical-factors-on-cartilage-can-be-detected-using-quantitative-magnetic-resonance-imaging-after-anterior-cruciate-ligament-reconstruction
#18
Keiko Amano, Alan K Li, Valentina Pedoia, Matthew F Koff, Aaron J Krych, Thomas M Link, Hollis Potter, Scott Rodeo, Xiaojuan Li, C Benjamin Ma, Sharmila Majumdar
BACKGROUND: Quantitative magnetic resonance (qMR) can be used to measure macromolecules in tissues and is a potential method of observing early cartilage changes in the development of posttraumatic osteoarthritis. Hypothesis/Purpose: We hypothesized that specific patient and surgical factors affecting cartilage matrix composition after anterior cruciate ligament (ACL) reconstruction (ACLR) can be detected using T1ρ and T2 relaxation times. Our purpose was to demonstrate this ability in a multicenter feasibility study...
April 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28756467/no-difference-in-graft-healing-or-clinical-outcome-between-trans-portal-and-outside-in-techniques-after-anterior-cruciate-ligament-reconstruction
#19
Jae-Ang Sim, Jong-Min Kim, SahngHoon Lee, Eun-Kyoo Song, Jong-Keun Seon
PURPOSE: The purpose of this study was to compare femoral tunnel geometry including tunnel position, length, and graft bending angle between trans-portal and outside-in techniques in anterior cruciate ligament (ACL) reconstruction and discover whether such differences in tunnel geometry could influence graft healing or clinical outcome. METHODS: Sixty-four patients with anatomical single-bundle ACL reconstruction performed with either trans-portal technique (32 patients, one centre) or outside-in technique (32 patients, the other centre) were included in this retrospective study...
July 29, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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
#20
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
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