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(Anterior cruciate ligament) AND imaging

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https://www.readbyqxmd.com/read/28430526/the-bow-tie-shape-of-the-anterior-cruciate-ligament-as-visualized-by-high-resolution-magnetic-resonance-imaging
#1
Kang Min Sohn, Min Jin Lee, Helen Hong, Young Cheol Yoon, Chan Deok Park, Joon Ho Wang
BACKGROUND: Although numerous studies have examined the anatomic characteristics of the anterior cruciate ligament (ACL), its actual shape remains unclear. PURPOSE: To determine the average shape of the ACL by analyzing its cross section through the use of high-resolution magnetic resonance imaging (MRI) data. STUDY DESIGN: Descriptive laboratory study. METHODS: The study included 96 MRIs, conducted using a 3.0-T magnet, to analyze the shape of the ACL...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28425757/the-prevalence-and-characteristics-of-a-subcortical-cystic-lesion-at-the-subspinous-region-of-the-knee
#2
Ji Ye Son, Young Cheol Yoon, Wook Jin, Jang Gyu Cha
Background Although we observed that subcortical cysts near the attachment of the meniscus or cruciate ligaments are frequently seen with a tear or degeneration of the adjacent meniscus and/or cruciate ligament, there is no large study describing the prevalence, distribution, and associated findings of these cysts. Purpose To evaluate the prevalence and distribution of subcortical cysts near the attachments of the meniscus or cruciate ligaments and evaluate pathologies of the meniscus or cruciate ligaments using magnetic resonance imaging (MRI)...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28419808/outcomes-after-1-stage-versus-2-stage-revision-anterior-cruciate-ligament-reconstruction
#3
Justin J Mitchell, Jorge Chahla, Chase S Dean, Mark Cinque, Lauren M Matheny, Robert F LaPrade
BACKGROUND: Revision anterior cruciate ligament reconstruction (ACLR) is becoming increasingly common as the number of primary ACLR cases continues to rise. Despite this, there are limited data on the outcomes of revision ACLR and even less information specifically addressing the differences in 1-stage revision reconstruction versus those performed in a 2-stage fashion after primary reconstruction. PURPOSE: To compare the outcomes, patient satisfaction, and failure rates of 1-stage versus 2-stage revision ACLR...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28408164/comparison-of-anterior-cruciate-ligament-volume-after-anatomic-double-bundle-anterior-cruciate-ligament-reconstruction
#4
Byung Hoon Lee, Rajat Jangir, Hun Yeong Kim, Jung Min Shin, Minho Chang, Kwon Kim, Joon Ho Wang
BACKGROUD: To determine whether anatomic double-bundle anterior cruciate ligament reconstruction (DB-ACLR) can restore the native ACL volume, and whether the volume change after reconstruction affects clinical outcomes and re-rupture rates following the contemporary techniques. METHODS: Eighty patients undergoing anatomic DB-ACLR using transportal or outside-in technique were prospectively evaluated with magnetic resonance imaging (MRI) before and after surgery...
April 10, 2017: Knee
https://www.readbyqxmd.com/read/28405740/mri-is-not-reliable-in-diagnosing-of-concomitant-anterolateral-ligament-and-anterior-cruciate-ligament-injuries-of-the-knee
#5
Brian M Devitt, Richard O'Sullivan, Julian A Feller, Nicholas Lash, Tabitha J Porter, Kate E Webster, Timothy S Whitehead
PURPOSE: There has been a renewed interest in the anterolateral structures of the knee, including description of the anterolateral ligament (ALL) as a distinct structure. Recognizing injury to the ALL is challenging, particularly given the subjective nature of physical examination. Consequently, focus has turned to magnetic resonance imaging (MRI) to reach a preoperative diagnosis of this region. The aim of this study was to examine the ability of 3-Tesla (3T) MRI to identify the ALL in ACL-injured patients compared to a matched control group of ACL-intact patients...
April 12, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28402758/the-graft-bending-angle-can-affect-early-graft-healing-after-anterior-cruciate-ligament-reconstruction-in-vivo-analysis-with-2-years-follow-up
#6
Yasutaka Tashiro, Tom Gale, Vani Sundaram, Kanto Nagai, James J Irrgang, William Anderst, Yasuharu Nakashima, Scott Tashman, Freddie H Fu
BACKGROUND: A high graft bending angle (GBA) after anterior cruciate ligament (ACL) reconstruction has been suggested to cause stress on the graft. Nevertheless, evidence about its effect on graft healing in vivo is limited. HYPOTHESIS: The signal intensity on magnetic resonance imaging (MRI) would be higher in the proximal region of the ACL graft, and higher signals would be correlated to a higher GBA. STUDY DESIGN: Descriptive laboratory study...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28366841/digital-image-correlation-aided-mechanical-characterization-of-the-anteromedial-and-posterolateral-bundles-of-the-anterior-cruciate-ligament
#7
Kaitlyn Mallett, Ellen M Arruda
The anterior cruciate ligament (ACL) is one of the most commonly injured soft tissue structures in the articular knee joint, often requiring invasive surgery for patients to restore pre-injury knee kinematics. There is a pressing need to understand the role of the ACL in knee function, in order to select proper replacements. Digital image correlation (DIC), a non-contact full field displacement measurement technique, is an established tool for evaluating non-biological materials. The application of DIC to soft tissues has been in the nascent stages, largely due to patterning challenges of such materials...
March 30, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28359570/sensitivity-of-acl-volume-and-t2-%C3%A2-relaxation-time-to-magnetic-resonance-imaging-scan-conditions
#8
Jillian E Beveridge, Edward G Walsh, Martha M Murray, Braden C Fleming
Anterior cruciate ligament (ACL) volume and T2(∗) relaxation times from magnetic resonance (MR) images have been previously shown to predict the structural properties of healing ligaments. We investigated whether MR imaging scan resolution and condition (in vivo, in situ, or ex vivo) affected ACL volume and T2(∗) relaxation times in intact ligaments. ACLs of 14 pigs were imaged using a 3T scanner and a six-channel flexcoil using at least two of four possible scan conditions: (1) in vivo moderate resolution (n=14); (2) in vivo high resolution (n=7); (3) in situ high resolution acquired within 60 minutes of euthanasia (n=6); and (4) ex vivo high resolution following hind limb disarticulation and one freeze-thaw cycle (n=7)...
May 3, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28355671/multiligamentous-injury-of-the-knee-mri-diagnosis-and-injury-patterns
#9
Barry Glenn Hansford, Corrie M Yablon
Anterior cruciate and posterior cruciate injuries rarely occur in isolation and are often associated with injuries to the secondary or supporting structures that provide stability against rotational forces. These structures include the posterolateral and posteromedial corner ligaments and tendons, as well as the anterolateral ligament. If injuries to these secondary structures are not appreciated at the time of cruciate ligament reconstruction, an isolated cruciate ligament reconstruction may be predisposed to early failure...
April 2017: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/28345597/post-traumatic-osteoarthritis-in-mice-following-mechanical-injury-to-the-synovial-joint
#10
Muhammad Farooq Rai, Xin Duan, James D Quirk, Nilsson Holguin, Eric J Schmidt, Nobuaki Chinzei, Matthew J Silva, Linda J Sandell
We investigated the spectrum of lesions characteristic of post-traumatic osteoarthritis (PTOA) across the knee joint in response to mechanical injury. We hypothesized that alteration in knee joint stability in mice reproduces molecular and structural features of PTOA that would suggest potential therapeutic targets in humans. The right knees of eight-week old male mice from two recombinant inbred lines (LGXSM-6 and LGXSM-33) were subjected to axial tibial compression. Three separate loading magnitudes were applied: 6N, 9N, and 12N...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345404/are-bone-bruise-characteristics-and-articular-cartilage-pathology-associated-with-inferior-outcomes-2-and-6-years-after-anterior-cruciate-ligament-reconstruction
#11
Christian Lattermann, Cale A Jacobs, Emily K Reinke, Erica A Scaramuzza, Laura J Huston, Warren R Dunn, Kurt P Spindler
Objective To determine (1) if bone bruise characteristics seen on magnetic resonance imaging are associated with patient-reported outcomes prior to and following anterior cruciate ligament reconstruction and (2) if the combined presence of bone bruises with articular cartilage pathology results in inferior 2- or 6-year outcomes. Design Bone bruise volume and severity were measured on 81 patients' preoperative magnetic resonance imaging in the medial and lateral femoral condyle (MFC, LFC) and medial and lateral tibial plateau (MTP, LTP) using the Costa-Paz classification and a modified version of Roemer and Bohndorf's technique...
April 2017: Cartilage
https://www.readbyqxmd.com/read/28343807/dial-test-unrecognized-predictor-of-anterior-cruciate-ligament-deficiency
#12
Brian Forsythe, Bryan M Saltzman, Gregory L Cvetanovich, Michael J Collins, Thomas A Arns, Nikhil N Verma, Brian J Cole, Bernard R Bach
PURPOSE: To evaluate the effect of isolated anterior cruciate ligament (ACL) injury on tibial external rotation as measured by the dial test. METHODS: Twenty-seven consecutive patients scheduled to undergo a primary ACL reconstruction were prospectively evaluated. Physical examination and magnetic resonance imaging findings were analyzed to exclude multiligamentous injury. The dial test was performed with the patient under anesthesia with a goniometer on both the affected and unaffected knees at 30° and 90°...
March 23, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28343806/ultrasonographic-evaluation-of-anterolateral-ligament-injuries-correlation-with-magnetic-resonance-imaging-and-pivot-shift-testing
#13
Etienne Cavaignac, Marie Faruch, Karine Wytrykowski, Olivia Constant, Jérôme Murgier, Emilie Berard, Philippe Chiron
PURPOSE: (1) To compare the diagnostic ability of ultrasonography (US) and magnetic resonance imaging (MRI) to detect anterolateral ligament (ALL) injuries in anterior cruciate ligament (ACL)-deficient patients, and (2) to evaluate the correlation between ALL injury status (as determined by US and MRI) and the knee's rotational stability. METHODS: Thirty patients with an isolated ACL injury were included prospectively over a 3-month period. The condition of the ALL was evaluated by 2 experienced radiologists using both US and MRI...
March 23, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28320209/anterolateral-ligament-of-the-knee-anatomy-function-imaging-and-treatment
#14
Ronak M Patel, Robert H Brophy
The anterolateral ligament (ALL) of the knee has gained attention recently for its potential role in rotational stability of the knee, especially in association with anterior cruciate ligament (ACL) injuries. Anatomic studies have characterized the ALL as it runs in an anteroinferior and oblique direction from the lateral distal femur to the anterolateral proximal tibia, although the prevalence and variance of this ligament are not well understood. Magnetic resonance imaging and ultrasound have identified the ligament and linked it with the classically described Segond fracture...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28301221/diagnosis-of-internal-derangement-of-the-knee-volume-isotropic-turbo-spin-echo-acquisition-mri-with-fat-suppression-versus-without-fat-suppression
#15
Ji Hyun Lee, Young Cheol Yoon, Ki Jeong Park, Joon Ho Wang
OBJECTIVE: The purpose of this study was to compare 3D volume isotropic turbo spin-echo acquisition (VISTA) MRI with and without fat suppression for use in evaluating ligaments, menisci, and cartilage. MATERIALS AND METHODS: Two radiologists retrospectively and independently reviewed 71 MRI studies. Each study consisted of 3D intermediate-weighted VISTA images with fat suppression and without fat suppression. The presence of tears of the anterior cruciate and posterior cruciate ligaments, tears of the medial and lateral menisci, and cartilaginous defects was evaluated...
March 16, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28298053/passive-anterior-tibial-subluxation-in-the-setting-of-anterior-cruciate-ligament-injuries
#16
Lucas S McDonald, Jelle P van der List, Kristofer J Jones, Hendrik A Zuiderbaan, Joseph T Nguyen, Hollis G Potter, Andrew D Pearle
BACKGROUND: Static anterior tibial subluxation after an anterior cruciate ligament (ACL) injury highlights the abnormal relationship between the tibia and femur in patients with ACL insufficiency, although causal factors including injuries to secondary stabilizers or the time from injury to reconstruction have not been examined. PURPOSE: To determine static relationships between the tibia and femur in patients with various states of ACL deficiency and to identify factors associated with anterior tibial subluxation...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28293698/anterolateral-ligament-abnormalities-are-associated-with-peripheral-ligament-and-osseous-injuries-in-acute-ruptures-of-the-anterior-cruciate-ligament
#17
Camilo Partezani Helito, Paulo Victor Partezani Helito, Renata Vidal Leão, Marco Kawamura Demange, Marcelo Bordalo-Rodrigues
PURPOSE: Few studies have used MRI to identify the ALL. As it was shown that it is not possible to precisely characterize this ligament in all examination, it is important to identify concomitant lesions that can help in diagnosing ALL abnormalities. It is important to characterise this injury due to its association with anterolateral knee instability. Thus, the present study was performed to determine the frequency of ALL injuries in patients with acute ACL rupture and to analyse its associated knee lesions...
March 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28291184/lateral-radiographic-landmarks-for-acl-and-lcl-footprint-origins-during-all-epiphyseal-femoral-drilling-in-skeletally-immature-knees
#18
Kevin G Shea, Peter C Cannamela, Peter D Fabricant, E Bailey Terhune, John D Polousky, Matthew D Milewski, Theodore J Ganley, Allen F Anderson
BACKGROUND: This study was conducted to evaluate the spatial relationship of the anterior cruciate ligament (ACL) and lateral collateral ligament (LCL) femoral footprint origins in knee specimens from skeletally immature donors as viewed on lateral radiographs. METHODS: Fourteen cadaver specimens of skeletally immature knees from children between 7 and 11 years old at the time of death were examined through gross dissection. Metallic pins were placed at the center of the ACL and LCL femoral footprints, and computed tomography (CT) scans were performed...
March 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28290752/mri-based-assessment-of-lower-extremity-muscle-volumes-in-patients-before-and-after-acl-reconstruction
#19
Grant E Norte, Katherine R Knaus, Chris Kuenze, Geoffrey G Handsfield, Craig H Meyer, Silvia S Blemker, Joseph M Hart
CONTEXT: Study of muscle volumes in patients after anterior cruciate ligament (ACL) injury and reconstruction (ACL-R) is largely limited to cross-sectional assessment of the thigh musculature, which may inadequately describe post-traumatic and post-surgical muscle function. No studies have prospectively examined the influence of ACL injury and reconstruction on lower extremity muscle volumes. OBJECTIVE: Assess magnetic resonance imaging (MRI) derived lower extremity muscle volumes, and quantify quadriceps strength and activation in patients following ACL injury and reconstruction...
March 14, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28284998/acute-mobilization-and-migration-of-bone-marrow-derived-stem-cells-following-anterior-cruciate-ligament-rupture
#20
T Maerz, M Fleischer, M D Newton, A Davidson, M Salisbury, P Altman, M D Kurdziel, K Anderson, A Bedi, K C Baker
OBJECTIVE: Little is known regarding acute local and systemic processes following anterior cruciate ligament (ACL) rupture. No study has elucidated whether bone marrow-derived mesenchymal stem cells (MSCs) are mobilized into circulation and recruited to the injured joint. METHODS: In Part 1, Lewis rats were randomized to noninvasive ACL rupture (Rupture) or non-injured (Control) (n = 6/group). After 72 h, whole blood MSC concentration was assessed using flow cytometry...
March 8, 2017: Osteoarthritis and Cartilage
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