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Knee meniscus tear

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https://www.readbyqxmd.com/read/27911285/the-relation-between-chondromalacia-patella-and-meniscal-tear-and-the-sulcus-angle-trochlear-depth-ratio-as-a-powerful-predictor
#1
Hatice Resorlu, Coskun Zateri, Gurdal Nusran, Ferdi Goksel, Nilufer Aylanc
PURPOSE: To investigate the relation between chondromalacia patella and the sulcus angle/trochlear depth ratio as a marker of trochlear morphology. In addition, we also planned to show the relationship between meniscus damage, subcutaneous adipose tissue thickness as a marker of obesity, patellar tilt angle and chondromalacia patella. METHODS: Patients with trauma, rheumatologic disease, a history of knee surgery and patellar variations such as patella alba and patella baja were excluded...
November 25, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27887880/anamnestic-prediction-of-bucket-handle-compared-to-other-tear-patterns-of-the-medial-meniscus-in-stable-knees
#2
Barak Haviv, Shlomo Bronak, Yona Kosashvili, Rafael Thein
OBJECTIVE: The aim of this study was to analyze and compare the preoperative anamnestic details between patients with an arthroscopic diagnosis of bucket handle and other tear patterns of the medial meniscus in stable knees. METHODS: A total of 204 patients (mean age 49.3 ± 13 years) were included in the study. The mean age was 49.3 ± 13 years. The study group included 65 patients (63 males, 2 females) with an arthroscopic diagnosis of bucket handle tear and the control group included 139 patients (90 males, 49 females) with non-bucket handle tear patterns...
November 23, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27885289/assessment-of-knee-joint-injuries-with-low-field-strength-magnetic-resonance-imaging
#3
O B Panta, N P Neupane, S Songmen, G Gurung
BACKGROUND: Magnetic Resonance Imaging is an appropriate screening tool before therapeutic arthroscopy, making diagnostic arthroscopy unnecessary in most patients. This study aims to evaluate the MRI findings in knee injuries and diagnostic value of low Strength MRI for assessing Meniscal and cruciate ligament tear. METHODS: A cross sectional study was conducted on patients undergoing "Magnetic Resonance Imaging of the Knee" for injuries of the knee and excluded patients undergoing MRI for other causes, poor diagnostic quality MRI and post operative MRI...
May 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/27824675/-fat-brook-in-the-popliteal-fossa-cadaveric-and-clinical-investigation-with-magnetic-resonance-imaging
#4
Yoonah Song, Seunghun Lee, Doo-Jin Paik, Jiyoon Bae
OBJECTIVE: This study aimed to describe the "fat brook" (FB) in the popliteal fossa of a cadaver and to evaluate its clinical significance. METHODS: Ten fresh cadaveric knees underwent magnetic resonance imaging and histologic analyses. In addition, magnetic resonance imaging images from 321 patients (108 men, 213 women; mean age, 49.8 years; age range, 5-92 years) were retrospectively reviewed. Two radiologists independently determined the presence/absence of the FB and internal derangement of the knee...
November 7, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27824492/evolution-of-intrameniscal-signal-intensity-alterations-detected-on-mri-over-24-months-in-patients-with-traumatic-anterior-cruciate-ligament-tear
#5
Julio Brandao Guimaraes, Luca Facchetti, Benedikt J Schwaiger, Alexandra S Gersing, Sharmila Majumdar, Benjamin C Ma, Xiaojuan Li, Thomas M Link
OBJECTIVE: The objective of our study was to assess the prevalence and evolution of intrameniscal signal-intensity alteration in subjects with an anterior cruciate ligament (ACL) tear over 24 months and compare clinical outcome and changes of cartilage between subjects with and those without this meniscal abnormality. MATERIALS AND METHODS: Fifty-seven subjects with an ACL tear were screened for intrameniscal signal-intensity alteration. Morphologic and compositional MRI was performed before ACL reconstruction and 12 and 24 months after ACL reconstruction...
November 8, 2016: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/27813662/matrix-metalloproteinase-activity-and-prostaglandin-e2-are-elevated-in-the-synovial-fluid-of-meniscus-tear-patients
#6
Betty Liu, Adam P Goode, Teralyn E Carter, Gangadhar M Utturkar, Janet L Huebner, Dean C Taylor, Claude T Moorman Iii, William E Garrett, Virginia B Kraus, Farshid Guilak, Louis E DeFrate, Amy L McNulty
PURPOSE: Meniscus tears are a common knee injury and are associated with the development of post-traumatic osteoarthritis (OA). The purpose of this study was to evaluate potential OA mediators in the synovial fluid and serum of meniscus tear subjects compared to those in the synovial fluid of radiographic non-OA control knees. MATERIALS AND METHODS: Sixteen subjects with an isolated unilateral meniscus injury and six subjects who served as reference controls (knee Kellgren-Lawrence grade 0-1) were recruited...
November 4, 2016: Connective Tissue Research
https://www.readbyqxmd.com/read/27807116/tibiofemoral-contact-mechanics-with-horizontal-cleavage-tear-and-resection-of-the-medial-meniscus-in-the-human-knee
#7
Jason L Koh, Seung Jin Yi, Yupeng Ren, Todd A Zimmerman, Li-Qun Zhang
BACKGROUND: The meniscus is known to increase the contact area and decrease contact pressure in the tibiofemoral compartments of the knee. Radial tears of the meniscal root attachment along with partial resections of the torn meniscal tissue decrease the contact area and increase pressure; however, there is a lack of information on the effects of a horizontal cleavage tear (HCT) and partial leaf meniscectomy of such tears on tibiofemoral contact pressure and contact area. METHODS: Twelve fresh-frozen human cadaveric knees were tested under 10 conditions: 5 serial conditions of posterior medial meniscectomy (intact meniscus, HCT, repaired HCT, inferior leaf resection, and resection of both inferior and superior leaves), each at 2 knee flexion angles (0° and 60°) under an 800-N axial load...
November 2, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27803940/association-between-meniscal-and-chondral-lesions-and-timing-of-anterior-cruciate-ligament-reconstruction
#8
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/27798972/signs-of-knee-osteoarthritis-common-in-620-patients-undergoing-arthroscopic-surgery-for-meniscal-tear
#9
Kenneth Pihl, Martin Englund, L Stefan Lohmander, Uffe Jørgensen, Nis Nissen, Jeppe Schjerning, Jonas B Thorlund
Background and purpose - Recent evidence has questioned the effect of arthroscopic knee surgery for middle-aged and older patients with degenerative meniscal tears with or without concomitant radiographic knee osteoarthritis (OA). We investigated the prevalence of early or more established knee OA and patients' characteristics in a cohort of patients undergoing arthroscopic surgery for a meniscal tear. Patients and methods - 641 patients assigned for arthroscopy on suspicion of meniscus tear were consecutively recruited from February 2013 through January 2015...
November 1, 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27793202/enhanced-cellular-infiltration-of-human-adipose-derived-stem-cells-in-allograft-menisci-using-a-needle-punch-method
#10
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/27793159/repair-of-isolated-horizontal-meniscal-tears-with-all-inside-suture-materials-using-the-overlock-method-outcome-study-with-a-minimum-2-year-follow-up
#11
Uğur Tiftikçi, Sancar Serbest
BACKGROUND: This study aimed to consider the use of a meniscal repair in patients in order to close the horizontal cleavage extending up to the avascular zone. The hypothesis was to examine the clinical and arthroscopic outcomes following meniscal repair of degenerative horizontal cleavage tears with new-generation all-inside suture materials using the overlock method. METHODS: We retrospectively reviewed a consecutive series of 55 patients which had a horizontal pattern, and finally, 27 patients with a horizontal tear only which required no additional intra-articular surgical intervention were included in the study...
October 28, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27766275/quantifying-quadriceps-muscle-strength-in-patients-with-acl-injury-focal-cartilage-lesions-and-degenerative-meniscus-tears-differences-and-clinical-implications
#12
Ingrid Eitzen, Hege Grindem, Agnethe Nilstad, Håvard Moksnes, May Arna Risberg
BACKGROUND: Reduced quadriceps strength influences knee function and increases the risk of knee osteoarthritis. Thus, it is of significant clinical relevance to precisely quantify strength deficits in patients with knee injuries. PURPOSE: To evaluate isokinetic concentric quadriceps muscle strength torque values, assessed both from peak torque and at specific knee flexion joint angles, in patients with anterior cruciate ligament (ACL) injury, focal cartilage lesions, and degenerative meniscus tears...
October 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27761625/non-operative-management-of-medial-meniscus-posterior-horn-root-tears-is-associated-with-worsening-arthritis-and-poor-clinical-outcome-at-5-year-follow-up
#13
Aaron J Krych, Patrick J Reardon, Nick R Johnson, Rohith Mohan, Logan Peter, Bruce A Levy, Michael J Stuart
PURPOSE: Medial meniscus posterior root tears (MMPRTs) are a significant source of pain and dysfunction, but little is known about the natural history and outcome and for non-operative management of these lesions. The purpose of this study was to evaluate (1) the mid-term clinical and radiographic outcomes of non-operative treatment of MMPRTs and (2) risk factors for worse outcomes. METHODS: A retrospective review was performed for patients with symptomatic, unrepaired MMPRTs and a minimum 2-year follow-up for IKDC and Tegner outcome scores...
October 19, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27751607/meniscal-allograft-transplantation-for-symptomatic-knee-after-meniscectomy-of-torn-discoid-medial-meniscus-report-of-three-cases
#14
Sung Il Wang
In symptomatic discoid medial meniscus, partial meniscectomy is the principal treatment method and can yield promising short-term results. However, unlike the nondiscoid meniscus, discoid medial meniscus is frequently associated with horizontal cleavage tears, attributable to the presence of myxoid degeneration in the intrameniscal substance, in that it may potentially occur deteriorating long-term results because of re-tearing of remaining meniscus or secondary degeneration of cartilage of the medial compartment after meniscectomy...
October 14, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27726919/reverse-segond-fracture-and-associated-knee-injuries-a-case-report-and-review-of-13-published-cases
#15
Ozkan Kose, Selahattin Ozyurek, Adil Turan, Ferhat Guler
Reverse Segond fracture is originally described as an indirect radiographic clue for a specific injury complex of the knee joint that includes posterior cruciate ligament (PCL) rupture and medial meniscal tear. Herein, we describe a case with reverse Segond fracture associated with PCL avulsion fracture instead of PCL rupture. According to current literature review, reverse Segond fracture is not only associated with PCL and medial meniscal injuries, but also frequently associated with anterior cruciate ligament (ACL) and medial collateral ligament (MCL) injuries...
October 7, 2016: Acta Orthopaedica et Traumatologica Turcica
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/27726244/knee-imaging-rapid-three-dimensional-fast-spin-echo-using-compressed-sensing
#17
Richard Kijowski, Humberto Rosas, Alexey Samsonov, Kevin King, Rob Peters, Fang Liu
PURPOSE: To investigate the feasibility of using compressed sensing (CS) to accelerate three-dimensional fast spin-echo (3D-FSE) imaging of the knee. MATERIALS AND METHODS: A 3D-FSE sequence was performed at 3T with CS (CUBE-CS with 3:16-minute scan time) and without CS (CUBE with 4:44-minute scan time) twice on the knees of 10 healthy volunteers to assess signal-to-noise ratio (SNR) using the addition-subtraction method and once on the knees of 50 symptomatic patients to assess diagnostic performance...
October 11, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27709054/medial-meniscus-radial-tear-a-transtibial-2-tunnel-technique
#18
Marco Nitri, Jorge Chahla, David Civitarese, Sanjeev Bhatia, Samuel G Moulton, Christopher M LaPrade, Robert F LaPrade
Complete radial tears of the medial meniscus significantly decrease the meniscal tissue's ability to dissipate tibiofemoral loads and have been described as functionally similar to a total meniscectomy, predisposing patients to early osteoarthritis. At present, no consensus exists regarding the optimal surgical treatment of a radial meniscal tear. Current repair techniques have led to a reportedly high rate of incomplete healing or healing of the meniscus in a nonanatomic, gapped position, which compromises its ability to withstand hoop stresses...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27709039/inside-out-repair-for-radial-meniscus-tears
#19
Ayoosh Pareek, Michael P O'Malley, Bruce A Levy, Michael J Stuart, Aaron J Krych
Understanding of meniscal function through basic science, natural history, and biomechanics has highlighted the importance of preserving the meniscus to maintain normal knee biomechanics. Tears that may alter these biomechanics can contribute to the progressive nature of degenerative joint disease in the knee. Radial tears result in the disruption of the circumferential fibers causing inability of the native meniscus to resist normal hoop stresses, thereby leading to increased focal areas of pressure that cause complications such as early onset arthrosis...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27709037/outside-in-deep-medial-collateral-ligament-release-during-arthroscopic-medial-meniscus-surgery
#20
Adrian Todor, Sergiu Caterev, Dan Viorel Nistor
Arthroscopic partial medial meniscectomy is a very common orthopaedic procedure performed for symptomatic, irreparable meniscus tears. It is usually associated with a very good outcome and minimal complications. In some patients with tight medial compartment, the posterior horn of the medial meniscus can be difficult to visualize, and access in this area with instruments may be challenging. To increase the opening of the medial compartment, after valgus-extension stress position of the knee, different techniques of deep medial collateral ligament release have been described...
August 2016: Arthroscopy Techniques
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