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Knee menisci tears

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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
#1
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/28282214/clinical-and-radiographic-outcomes-of-meniscus-surgery-and-future-targets-for-biologic-intervention-a-review-of-data-from-the-moon-group
#2
Robert W Westermann, Morgan Jones, David Wasserstein, Kurt P Spindler
Meniscus injury and treatment occurred with the majority of anterior cruciate ligament reconstructions (ACLR) in the multicenter orthopaedic outcomes (MOON) cohort. We describe the patient reported outcomes, radiographic outcomes and predictors of pain from meniscus injuries and treatment in the setting of ACLR. Patient reported outcomes improve significantly following meniscus repair with ACLR, but differences exist based on the meniscus injury laterally (medial or lateral). Patients undergoing medial meniscus repair have worse patient-reported outcomes and more pain compared to those with uninjured menisci...
March 10, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28229984/anatomical-knee-variants-in-discoid-lateral-meniscal-tears
#3
Xu-Xu Chen, Jian Li, Tao Wang, Yang Zhao, Hui Kang
BACKGROUND: Discoid lateral meniscus was a common meniscal dysplasia and was predisposed to tear. There were some anatomical knee variants in patients with discoid lateral meniscus. The aim of this study was to analyze the relationship between anatomical knee variants and discoid lateral meniscal tears. METHODS: There were totally 125 cases of discoid lateral meniscus enrolled in this study from February 2008 to December 2013. Eighty-seven patients who underwent arthroscopic surgery for right torn discoid lateral meniscus were enrolled in the torn group...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28224064/anterior-horn-meniscal-repair-using-an-outside-in-suture-technique
#4
Travis J Menge, Chase S Dean, Jorge Chahla, Justin J Mitchell, Robert F LaPrade
The menisci are important structures within the knee that play a critical role in maintaining proper stability, load distribution, and joint lubrication. Injury to the menisci has been found to significantly alter the complex biomechanics of the knee, and thus affect the health and longevity of the native joint. Tears involving the anterior horn are increasingly recognized as an important pathology. Although early treatment of meniscal tears focused primarily on removal of the injured tissue, recent attention on the long-term consequences of partial or total meniscectomy has led to increased attempts at meniscus repair whenever possible...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28214478/accuracy-of-64-section-mdct-in-the-diagnosis-of-cruciate-ligament-tears
#5
E J Heffernan, D E Moran, J F Gerstenmaier, C J McCarthy, C Hegarty, C J McMahon
AIM: To evaluate the accuracy of non-arthrographic 64-section multidetector computed tomography (CT) in the assessment of cruciate ligament tears. A secondary goal was to determine its accuracy in the diagnosis of additional soft-tissue injuries around the knee. MATERIALS AND METHODS: Forty consecutive outpatients underwent same-day magnetic resonance imaging (MRI) and 64-slice multidetector CT (MDCT) of the knee in this prospective study. MDCT images were independently evaluated for integrity of the anterior (ACL) and posterior cruciate ligaments (PCL), medial and lateral menisci, and medial and lateral collateral ligaments...
February 15, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28203112/bone-contusion-progression-from-traumatic-knee-injury-association-of-rate-of-contusion-resolution-with-injury-severity
#6
Douglas R Pedersen, Georges Y El-Khoury, Dan R Thedens, Mothana Saad-Eldine, Phinit Phisitkul, Annunziato Amendola
BACKGROUND: Bone contusions are frequently encountered in magnetic resonance imaging (MRI) evaluation of knee anterior cruciate ligament (ACL) injuries. Their role as indicators of injury severity remains unclear, primarily due to indeterminate levels of joint injury forces and to a lack of preinjury imaging. PURPOSE: The purpose of this study was to 1) quantify bone contusion pathogenesis following traumatic joint injuries using fixed imaging follow-ups, and 2) assess the feasibility of using longitudinal bone contusion volumes as an indicator of knee injury severity...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28164061/arthroscopic-meniscectomy-and-meniscoplasty-for-a-torn-discoid-medial-meniscus-case-report-surgical-technique-and-literature-review
#7
Gokhale Nikhil Abhay, Samant Ashwin, Shahane Sunil, Kapopara Hardik
INTRODUCTION: Normal menisci of the knee are semilunar structures. Sometimes, a meniscus may be found to be thickened and disc like and is called a discoid meniscus. Such a discoid variant is usually found in the lateral meniscus. Its occurrence in the medial meniscus is extremely rare. CASE REPORT: We report a case of an 18-year-old female, who presented to us with knee pain and was found to have a discoid medial meniscus with a tear. We operated on her arthroscopically and performed meniscectomy and meniscoplasty...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28121190/the-biology-of-meniscal-pathology-in-osteoarthritis-and-its-contribution-to-joint-disease-beyond-simple-mechanics
#8
James Melrose, Emily S Fuller, Christopher B Little
The meniscal cartilages in the knee function to improve congruity of the medial and lateral femoro-tibial joints, and play critical roles in load distribution and joint stability. Meniscal tears of various configurations are one of the most common conditions of the knee, and are associated with an increased risk of developing osteoarthritis (OA). While this risk has been largely attributed to loss of the biomechanical functions of the menisci, there is accumulating evidence suggesting that other aspects of meniscal biology may play a role in determining the long-term consequences of meniscal damage for joint health...
January 25, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28102713/factors-associated-with-the-status-of-meniscal-tears-following-meniscal-repair-concomitant-with-anterior-cruciate-ligament-reconstruction
#9
Takehiko Matsushita, Kanto Nagai, Daisuke Araki, Toshikazu Tanaka, Tomoyuki Matsumoto, Kotaro Nishida, Masahiro Kurosaka, Ryosuke Kuroda
Purpose Anterior cruciate ligament (ACL) injuries are often accompanied by meniscal tears. Meniscal repair is typically performed during ACL reconstruction. However, retear of the meniscus after repair is frequent. The purpose of this study was to analyze the factors associated with meniscal healing after meniscal repair concomitant with ACL reconstruction. Materials and Methods Eighty-seven meniscal repairs in 87 patients who received meniscal repair combined with ACL reconstruction and received second-look arthroscopy at a mean of postoperatively 15...
January 19, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28093371/sonographically-guided-knee-meniscus-injections-feasibility-techniques-and-validation
#10
Michael R Baria, Jacob L Sellon, Dan Lueders, Jay Smith
BACKGROUND: There is a growing interest in the use of biologic agents such as platelet-rich plasma and mesenchymal stem/stromal cells to treat musculoskeletal injuries, including meniscal tears. Although previous research has documented the role of diagnostic ultrasound to evaluate meniscal tears, sonographically guided (SG) techniques to specifically deliver therapeutic agents into the meniscus have not been described. OBJECTIVE: To describe and validate SG injection techniques for the body and posterior horn of the medial and lateral meniscus...
January 16, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28089224/loading-of-the-medial-meniscus-in-the-acl-deficient-knee-a-multibody-computational-study
#11
Trent M Guess, Swithin Razu
The menisci of the knee reduce tibiofemoral contact pressures and aid in knee lubrication and nourishment. Meniscal injury occurs in half of knees sustaining anterior cruciate ligament injury and the vast majority of tears in the medial meniscus transpire in the posterior horn region. In this study, computational multibody models of the knee were derived from medical images and passive leg motion for two female subjects. The models were validated against experimental measures available in the literature and then used to evaluate medial meniscus contact force and internal hoop tension...
March 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/27939623/factors-associated-with-meniscal-body-extrusion-on-knee-mri-in-overweight-and-obese-women
#12
F Zhang, S M Bierma-Zeinstra, E H G Oei, A Turkiewicz, M Englund, J Runhaar
OBJECTIVE: To determine factors associated with higher degree of meniscal body extrusion in overweight and obese women at high risk of knee osteoarthritis (OA). DESIGN: We used baseline data of the PRevention of knee Osteoarthritis in Overweight Females (PROOF) study, Netherlands, comprising overweight or obese women aged 50-60 years, free of clinical knee OA. All subjects completed a questionnaire on knee complaints and physical activity, underwent physical examination, radiography, and 1...
December 7, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27900270/three-dimensional-reconstructed-magnetic-resonance-scans-accuracy-in-identifying-and-defining-knee-meniscal-tears
#13
Neil Kruger, Eugene McNally, Sami Al-Ali, Raj Rout, Jonathan L Rees, Andrew J Price
AIM: To determine whether three-dimensional (3D) reconstruction from conventional magnetic resonance imaging (MRI) is able to accurately detect a meniscal tear, and define the configuration. METHODS: Thirty-three patients' 3T MRI scan data were collected and sagittal uni-planar 3D reconstructions performed from the preoperative MRI. There were 24 meniscal tears in 24 patients, and nine controls. All patients had arthroscopic corroboration of MRI findings. Two independent observers prospectively reported on all 33 reconstructions...
November 18, 2016: World Journal of Orthopedics
https://www.readbyqxmd.com/read/27803940/association-between-meniscal-and-chondral-lesions-and-timing-of-anterior-cruciate-ligament-reconstruction
#14
Gustavo Constantino de Campos, Wilton Nery, Paulo Eduardo Portes Teixeira, Paulo Henrique Araujo, Wilson de Mello Alves
BACKGROUND: Rupture of the anterior cruciate ligament (ACL) is a common sports injury and is known to be associated with an increased risk of knee osteoarthritis. Several studies have indicated that the risk of additional injuries to the menisci and articular cartilage increases with delays in the treatment of ACL tears. However, no consensus has been reached regarding the ideal timing for ACL reconstruction in terms of preventing secondary lesions. PURPOSE: To determine how the time elapsed between an ACL lesion and its reconstruction affects the incidence of meniscal and chondral lesions...
October 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27793202/enhanced-cellular-infiltration-of-human-adipose-derived-stem-cells-in-allograft-menisci-using-a-needle-punch-method
#15
Rachel C Nordberg, Adisri Charoenpanich, Christopher E Vaughn, Emily H Griffith, Matthew B Fisher, Jacqueline H Cole, Jeffrey T Spang, Elizabeth G Loboa
BACKGROUND: The meniscus plays a crucial role in knee joint stability, load transmission, and stress distribution. Meniscal tears are the most common reported knee injuries, and the current standard treatment for meniscal deficiency is meniscal allograft transplantation. A major limitation of this approach is that meniscal allografts do not have the capacity to remodel and maintain tissue homeostasis due to a lack of cellular infiltration. The purpose of this study was to provide a new method for enhanced cellular infiltration in meniscal allografts...
October 28, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27726749/posterior-root-meniscal-tears-preoperative-intraoperative-and-postoperative-imaging-for-transtibial-pullout-repair
#16
Andrew R Palisch, Ronald R Winters, Marc H Willis, Collin D Bray, Theodore B Shybut
The menisci play an important biomechanical role in axial load distribution of the knees by means of hoop strength, which is contingent on intact circumferentially oriented collagen fibers and meniscal root attachments. Disruption of the meniscal root attachments leads to altered biomechanics, resulting in progressive cartilage loss, osteoarthritis, and subchondral edema, with the potential for development of a subchondral insufficiency fracture. Identification of meniscal root tears at magnetic resonance (MR) imaging is crucial because new arthroscopic surgical techniques (transtibial pullout repair) have been developed to repair meniscal root tears and preserve the tibiofemoral cartilage of the knee...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27699479/intra-articular-pathology-associated-with-isolated-posterior-cruciate-ligament-injury-on-mri
#17
Michael D Ringler, Ezekiel E Shotts, Mark S Collins, B Matthew Howe
OBJECTIVE: Unlike with anterior cruciate ligament injury, little is known about the prevalence of intra-articular pathology associated with isolated posterior cruciate ligament (PCL) injury in the knee. The objectives of this study were to characterize and identify the frequency of meniscal tears and osteochondral injuries in these patients, and to see if management might be affected. MATERIALS AND METHODS: Altogether, 48 knee MRI exams with isolated PCL tears were evaluated for the presence of: grade and location of PCL tear, meniscal tear, articular chondral lesion, bone bruise, and fracture...
December 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27643766/imaging-of-athletic-injuries-of-knee-ligaments-and-menisci-sports-imaging-series
#18
Ali M Naraghi, Lawrence M White
Acute knee injuries are a common source of morbidity in athletes and if overlooked may result in chronic functional impairment. Magnetic resonance (MR) imaging of the knee has become the most commonly performed musculoskeletal MR examination and is an indispensable tool in the appropriate management of the injured athlete. Meniscal and ligamentous tearing are the most frequent indications for surgical intervention in sports injuries and an understanding of the anatomy, biomechanics, mechanisms of injury, and patterns of injury are all critical to accurate diagnosis and appropriate management...
October 2016: Radiology
https://www.readbyqxmd.com/read/27604189/traumatic-and-degenerative-meniscus-tears-have-different-gene-expression-signatures
#19
Robert H Brophy, Linda J Sandell, Muhammad Farooq Rai
BACKGROUND: Meniscus tears are classified as traumatic or degenerative based on the tear pattern. There is little evidence demonstrating biological differences between the 2 tear types. HYPOTHESIS: Gene expression signatures in the injured meniscus are different between traumatic (vertical) and degenerative (complex, horizontal, or flap) tears. STUDY DESIGN: Controlled laboratory study. METHODS: Samples of the torn meniscus from the white-white zone were removed at the time of clinically indicated partial meniscectomy from 48 patients (37 with degenerative tears and 11 with traumatic tears)...
January 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27452631/imaging-of-meniscus-and-ligament-injuries-of-the-knee
#20
M Faruch-Bilfeld, F Lapegue, H Chiavassa, N Sans
Magnetic resonance imaging has now an indisputable role for the diagnosis of meniscus and ligament injuries of the knee. Some technical advances have improved the diagnostic capabilities of magnetic resonance imaging so that diagnoses, which may change the therapeutic approach, such as a partial tear of the anterior cruciate ligament or confirmation of unstable meniscal injuries, are now made easier. This article describes the essential about magnetic resonance imaging technique and pathological results for the menisci, collateral ligaments and damage to the central pivot of the cruciate knee ligaments...
July 2016: Diagnostic and Interventional Imaging
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