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Tear meniscus

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https://www.readbyqxmd.com/read/29780840/radial-tears-of-the-lateral-meniscus-two-novel-repair-techniques-a-biomechanical-study
#1
Zachary C Stender, Allison M Cracchiolo, Michael P Walsh, David P Patterson, Matthew J Wilusz, Stephen E Lemos
Background: A common treatment for radial tears of the meniscus has historically been partial meniscectomy. Owing to the poor outcomes associated with partial meniscectomy, repair of the meniscus is an important treatment option. It is important to evaluate different repair techniques for radial tears of the meniscus. Purpose/Hypothesis: The purpose of this study was to evaluate 2 novel techniques to repair radial tears of the lateral meniscus. The 2 techniques were compared biomechanically with the cross-suture method with an inside-out technique...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29769537/a-co-culture-system-of-rat-synovial-stem-cells-and-meniscus-cells-promotes-cell-proliferation-and-differentiation-as-compared-to-mono-culture
#2
Xing Xie, Jingxian Zhu, Xiaoqing Hu, Linghui Dai, Xin Fu, Jiying Zhang, Xiaoning Duan, Yingfang Ao
A meniscus tear often happens during active sports. It needs to be repaired or replaced surgically to avoid further damage to the articular cartilage. To address the shortage of autologous meniscal cells, we designed a co-culture system of synovial stem cells (SMSCs) and meniscal cells (MCs) to produce a large cell number and to maintain characteristics of MCs. Different ratios of SMSCs and MCs at 3:1, 1:1, and 1:3 were tested. Mono-culture of SMSCs or MCs served as control groups. Proliferation and differentiation abilities were compared...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29755817/comparison-of-electrocoagulation-and-conventional-medical-drops-for-treatment-of-conjunctivochalasis-short-term-results
#3
Mehtap Çağlayan, Pınar Kösekahya, Canan Gürdal, Özge Saraç
Objectives: To compare the effectiveness of electrocoagulation and conventional medical drops for treatment of conjunctivochalasis using anterior segment-optical coherence tomography (AS-OCT). Materials and Methods: Forty eyes of 20 patients with bilateral conjunctivochalasis were included in this prospective study. Twenty eyes of 10 patients were assigned to Group 1 and underwent electrocoagulation. The other 20 eyes of 10 patients were assigned to Group 2 and received conventional medical treatment consisting of non-steroidal antiinflammatory drop (topical 0...
April 2018: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/29754495/evaluation-of-anterior-intermeniscal-ligament-in-discoid-lateral-meniscus-cases-and-presenting-the-accompanying-meniscal-pathologies-with-mri
#4
Ali Koç, Turgut Tursem Tokmak, Özgür Karabıyık, Gamze Türk
Background Although several studies were conducted to put forth the biomechanical function of anterior intermeniscal ligament (AIML) on the stability of meniscal structures, there are few data on the etiology of the early degeneration of discoid type compared to the normal shaped ones. Purpose To determine the AIML subtypes and accompanying meniscal pathologies in discoid lateral menisci (DLM) on knee MRI exams. Material and Methods Knee MRI exams of 171 individuals with DLM were reviewed. DLMs and AIMLs were typed according to Watanabe's classification and Nelson-Laprade classification, respectively...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29741400/anterolateral-ligament-reconstruction-protects-the-repaired-medial-meniscus-a-comparative-study-of-383-anterior-cruciate-ligament-reconstructions-from-the-santi-study-group-with-a-minimum-follow-up-of-2-years
#5
Bertrand Sonnery-Cottet, Adnan Saithna, William G Blakeney, Herve Ouanezar, Amrut Borade, Matt Daggett, Mathieu Thaunat, Jean-Marie Fayard, Jean Romain Delaloye
BACKGROUND: The prevalence of osteoarthritis after successful meniscal repair is significantly less than that after failed meniscal repair. PURPOSE: To determine whether the addition of anterolateral ligament reconstruction (ALLR) confers a protective effect on medial meniscal repair performed at the time of anterior cruciate ligament reconstruction (ACLR). STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Retrospective analysis of prospectively collected data was performed to include all patients who had undergone primary ACLR with concomitant posterior horn medial meniscal repair through a posteromedial portal between January 2013 and August 2015...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29738601/the-meniscal-comma-sign-characterization-and-treatment-of-a-displaced-fragment-in-the-meniscotibial-recess
#6
Hytham S Salem, Aaron H Carter, Weilong J Shi, Fotios P Tjoumakaris, Steven B Cohen, Adam C Zoga, Kevin B Freedman
Displaced parrot beak flap tears in the meniscotibial recess are complex tears of the meniscus that begin as central radial tears and progressively extend toward the periphery, creating a detached fragment. These tears have not been described in the literature, but the authors have described them as the "meniscal comma sign" based on their appearance on magnetic resonance imaging. Displaced fragments are clinically significant because of the pain and mechanical symptoms they can cause as a result of tenting of the deep medial collateral ligament...
May 8, 2018: Orthopedics
https://www.readbyqxmd.com/read/29726627/relationship-between-patient-reported-swelling-and-mri-defined-effusion-synovitis-in-patients-with-meniscus-tears-and-knee-osteoarthritis
#7
Lindsey A MacFarlane, Heidi Yang, Jamie E Collins, Ali Guermazi, Lisa A Mandl, Brue A Levy, Robert G Marx, Clare E Safran-Norton, Elena Losina, Jeffrey N Katz
OBJECTIVE: Synovitis is a prevalent feature in patients with knee osteoarthritis (OA) and meniscal tear and is associated with pain and cartilage damage. Patient-reported swelling is also prevalent in this population. We aimed to investigate the cross-sectional association between patient-reported swelling and effusion-synovitis on magnetic resonance imaging (MRI) in patients with OA and meniscal tear. METHODS: We used baseline data from a multicenter randomized controlled trial, Meniscal Tear in Osteoarthritis Research (MeTeOR)...
May 4, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29726278/tear-film-evaluation-by-scanning-laser-ophthalmoscopy-during-retinal-imaging
#8
Ilkay Kilic Muftuoglu, Maria Laura Gomez, Natalie Afshari, Dirk-Bartsch Uwe, Amit Meshi, Raouf Gaber, Qisheng You, William R Freeman
PURPOSE: Herein, we describe a novel finding which appears as a reticular pattern on multicolor confocal scanning laser ophthalmoscopy image during routine imaging of retina and we aim to show whether there is an association between this pattern and dry eye findings. MATERIALS AND METHODS: A total of 162 eyes of 81 patients that were scheduled for a routine retinal imaging by scanning laser ophthalmoscopy at a vitreoretinal practice underwent dry eye evaluation including corneal and conjunctival lissamine green staining, fluorescein staining, tear break-up time, and tear meniscus height measurement before acquiring any images...
May 1, 2018: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29718873/the-imaging-features-of-the-meniscal-roots-on-isotropic-3d-mri-in-young-asymptomatic-volunteers
#9
Ping Wang, Cheng-Zhou Zhang, Di Zhang, Quan-Yuan Liu, Xiao-Fei Zhong, Zhi-Jie Yin, Bin Wang
BACKGROUND: This study aimed to describe clearly the normal imaging features of the meniscal roots on the magnetic resonance imaging (MRI) with a 3-dimensional (3D) proton density-weighted (PDW) sequence at 3T. METHODS: A total of 60 knees of 31 young asymptomatic volunteers were examined using a 3D MRI. The insertion patterns, constitution patterns, and MR signals of the meniscal roots were recorded. RESULTS: The anterior root of the medial meniscus (ARMM), the anterior root of the lateral meniscus (ARLM), and the posterior root of the medial meniscus (PRMM) had 1 insertion site, whereas the posterior root of the lateral meniscus (PRLM) can be divided into major and minor insertion sites...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29713647/a-prospective-randomized-double-blind-parallel-group-placebo-controlled-study-evaluating-meniscal-healing-clinical-outcomes-and-safety-in-patients-undergoing-meniscal-repair-of-unstable-complete-vertical-meniscal-tears-bucket-handle-augmented-with-platelet
#10
Rafal Kaminski, Krzysztof Kulinski, Katarzyna Kozar-Kaminska, Monika Wielgus, Maciej Langner, Marcin K Wasko, Jacek Kowalczewski, Stanislaw Pomianowski
Objective: The present study aimed to investigate the effectiveness and safety of platelet-rich plasma (PRP) application in arthroscopic repair of complete vertical tear of meniscus located in the red-white zone. Methods: This single center, prospective, randomized, double-blind, placebo-controlled, parallel-arm study included 37 patients with complete vertical meniscus tears. Patients received an intrarepair site injection of either PRP or sterile 0.9% saline during an index arthroscopy...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29704113/repair-of-the-lateral-posterior-meniscal-root-improves-stability-in-an-acl-deficient-knee
#11
Philipp Forkel, Constantin von Deimling, Lucca Lacheta, Florian B Imhoff, Peter Foehr, Lukas Willinger, Felix Dyrna, Wolf Petersen, Andreas B Imhoff, Rainer Burgkart
PURPOSE: To investigate the stabilizing effect of a lateral meniscus posterior root repair in an ACL and root deficient knee. METHODS: The hypothesis of the current study was that a sequential transection of the posterior root and the meniscofemoral ligaments in an ACL-deficient knee increases rotational instability, and conversely, a repair of the meniscus root reduces the internal tibial rotation. Therefore, eight human knee joints were tested in a robotic setup (5 N m internal torque, 50 N m anterior translation load)...
April 27, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29691696/influence-of-glaucoma-surgery-on-the-ocular-surface-using-oculus-keratograph
#12
Sue Zhong, Hezheng Zhou, Xiao Chen, Wenqiang Zhang, Liqun Yi
PURPOSE: To investigate the influence of trabeculectomy and phacotrabeculectomy on the ocular surface. DESIGN: Retrospective, case-control study. METHODS: Eighty-one samples without dry eyes were recruited and divided into three groups, including phacoemulsification group (N = 30) as control group, trabeculectomy group (N = 27) and phacotrabeculectomy group (N = 24) as study groups. Ocular surface parameters, including noninvasive keratograph first (NifBUT) and average (NiaBUT) tear film breakup time, tear meniscus height (TMH) and corneal fluorescein stain (CFS), were estimated preoperatively, at 3 days, 1 month and 3 months postoperatively using oculus keratograph...
April 24, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29685524/medial-meniscal-extrusion-detection-evaluation-and-clinical-implications
#13
REVIEW
Nayanatara Swamy, Vibhor Wadhwa, Gitanjali Bajaj, Avneesh Chhabra, Tarun Pandey
The menisci play an important role in knee kinematics. Their unique anatomy allows them to channel forces generated during knee movements through the larger tibio-femoral condylar surfaces while simultaneously resisting deleterious hoop stresses. Although physiologic meniscal extrusion occurs with every knee joint movement, pathologic meniscal extrusion subjects the knee to persistent and excessive load transmission. This renders the knee structures susceptible to injury or exacerbates worsening of existing knee joint internal derangement...
May 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29676308/correlation-between-dry-eye-and-refractive-error-in-saudi-young-adults-using-noninvasive-keratograph-4
#14
Rania M Fahmy, Amal Aldarwesh
Purpose: The purpose is to study the correlation between dry eye and refractive errors in young adults using noninvasive Keratograph. Methods: In this cross sectional study, a total of 126 participants in the age range of 19-25 years and who were free of ocular surface disease, were recruited from King Saud University Campus. Refraction was defined by the spherical equivalent (SE) as the following: 49 emmetropic eyes (±0.50 SE), 48 myopic eyes (≤-0.75 SE and above), and 31 hyperopic eyes (>+0...
May 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29671255/randomized-controlled-study-to-investigate-the-effect-of-topical-diquafosol-tetrasodium-on-corneal-sensitivity-in-short-tear-break-up-time-dry-eye
#15
Minako Kaido, Motoko Kawashima, Yuta Shigeno, Yoshiaki Yamada, Kazuo Tsubota
INTRODUCTION: Complex mechanisms underlie dry eye (DE) symptom provocation. In particular, corneal hypersensitivity may provoke symptoms in short tear break-up time (BUT) DE characterized by tear film instability. We hypothesized that improved tear film stability may alleviate corneal sensitivity in patients with short tear BUT DE. Therefore, we investigated the effect of topical diquafosol tetrasodium (DQS) on corneal sensitivity in unstable tear film DE. METHODS: This prospective, randomized study included 27 subjects (age: 39...
April 18, 2018: Advances in Therapy
https://www.readbyqxmd.com/read/29668032/presence-of-meniscus-tear-alters-gene-expression-profile-of-anterior-cruciate-ligament-tears
#16
Robert H Brophy, Marcus A Rothermich, Eric D Tycksen, Lei Cai, Muhammad Farooq Rai
Anterior cruciate ligament (ACL) tears occur in isolation or in tandem with other intra-articular injuries such as meniscus tears. The impact of injury pattern on the molecular biology of the injured ACL is unknown. Here, we tested the hypothesis that the biological response of the ACL to injury varies based on the presence or absence of concomitant meniscus tear. We performed RNA-seq on 28 ACL tears remnants (12 isolated, 16 combined). In total, 16,654 transcripts were differentially-expressed between isolated and combined injury groups at false-discovery-rate of 0...
April 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29663192/human-knee-meniscus-regeneration-strategies-a-review-on-recent-advances
#17
REVIEW
Mamatha M Pillai, J Gopinathan, R Selvakumar, Amitava Bhattacharyya
PURPOSE OF REVIEW: Lack of vascularity in the human knee meniscus often leads to surgical removal (total or partial meniscectomy) in the case of severe meniscal damage. However, complete recovery is in question after such removal as the meniscus plays an important role in knee stability. Thus, meniscus tissue regeneration strategies are of intense research interest in recent years. RECENT FINDINGS: The structural complexity and inhomogeneity of the meniscus have been addressed with processing technologies for precisely controlled three dimensional (3D) complex porous scaffold architectures, the use of biomolecules and nanomaterials...
April 16, 2018: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/29662913/high-rate-of-missed-lateral-meniscus-posterior-root-tears-on-preoperative-magnetic-resonance-imaging
#18
Aaron J Krych, Isabella T Wu, Vishal S Desai, Naveen S Murthy, Mark S Collins, Daniel B F Saris, Bruce A Levy, Michael J Stuart
Background: Lateral meniscus posterior root tears (LMPRTs), if left untreated, can cause devastating effects to the knee, with rapid articular cartilage degeneration and loss of the meniscus as a secondary stabilizer. Detection and surgical repair of these defects have been linked to favorable outcomes, but preoperative identification of LMPRTs continues to be challenging. Purpose: To determine the rate of LMPRTs diagnosed preoperatively on magnetic resonance imaging (MRI) in a consecutive series of arthroscopically confirmed LMPRTs...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29653240/medial-meniscus-posterior-root-tear-induces-pathological-posterior-extrusion-of-the-meniscus-in-the-knee-flexed-position-an-open-magnetic-resonance-imaging-analysis
#19
S Masuda, T Furumatsu, Y Okazaki, Y Kodama, T Hino, Y Kamatsuki, S Miyazawa, T Ozaki
BACKGROUND: A medial meniscus posterior root tear (MMPRT) is defined as an injury to the posterior meniscal insertion on the tibia. In MMPRT, the medial meniscus (MM) hoop function is damaged, and the MM undergoes a medial extrusion into the interior from the superior articular surface of the tibia. However, the details of MM position and movement during knee joint movement are unclear in MMPRT cases. The present study aims to evaluate MM position and movement via magnetic resonance imaging (MRI) examination of the MM posterior extrusion (MMPE) at knee flexion angles of 10° and 90°...
April 10, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29648924/operative-treatment-of-isolated-meniscus-injuries-in-adolescent-patients-a-meta-analysis-and-review
#20
Gina M Mosich, Virginia Lieu, Edward Ebramzadeh, Jennifer J Beck
CONTEXT: With the rise in sports participation and increased athleticism in the adolescent population, there is an ever-growing need to better understand adolescent meniscus pathology and treatment. OBJECTIVE: To better understand the operative management of meniscus tears in the adolescent population. DATA SOURCES: A systematic review of PubMed (MEDLINE) and Google Scholar was performed for all archived years. STUDY SELECTION: Studies that reported on isolated meniscus tears in adolescent patients (age, 10-19 years) were included...
April 1, 2018: Sports Health
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