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Knee menisci tears

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https://www.readbyqxmd.com/read/27900270/three-dimensional-reconstructed-magnetic-resonance-scans-accuracy-in-identifying-and-defining-knee-meniscal-tears
#1
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
#2
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
#3
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
#4
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
#5
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...
October 4, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27643766/imaging-of-athletic-injuries-of-knee-ligaments-and-menisci-sports-imaging-series
#6
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
#7
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)...
September 7, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27452631/imaging-of-meniscus-and-ligament-injuries-of-the-knee
#8
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
https://www.readbyqxmd.com/read/27386449/two-cases-of-chronic-knee-pain-caused-by-unusual-injuries-to-the-popliteus-tendon
#9
Eric A Davalos, David Barank, Rajeev K Varma
Injuries to the popliteus tendon are less frequent than injuries to the menisci or ligamentous structures of the knee. When they do occur, injuries to the popliteus tendon tend to be the result of trauma and associated with injuries to other components of the knee. The most commonly seen injuries include tears at the musculotendinous junction and avulsion tears at the lateral femoral condyle insertion site. This report presents two unusual injuries of the popliteus tendon in patients with chronic knee pain: an isolated split tear of the tendon and a subluxed tendon residing within the lateral joint space...
January 2016: Joints
https://www.readbyqxmd.com/read/27331081/loaded-versus-unloaded-magnetic-resonance-imaging-mri-of-the-knee-effect-on-meniscus-extrusion-in-healthy-volunteers-and-patients-with-osteoarthritis
#10
Rina Patel, Matthew Eltgroth, Richard Souza, Chiyuan A Zhang, Sharmila Majumdar, Thomas M Link, Daria Motamedi
OBJECTIVE: Assess the impact of knee joint loading on meniscal extrusion in normal individuals and those with varying degrees of osteoarthritis (OA). METHODS: 143 healthy volunteers and patients with OA underwent 3 T MRI of the knee under unloaded and loaded conditions. OA was graded with the Kellgren-Lawrence (KL) system. Menisci were evaluated for presence of tear. Descriptive statistics were expressed as mean ± standard deviation. Loaded and unloaded groups were compared using Student's t-test...
2016: European Journal of Radiology Open
https://www.readbyqxmd.com/read/27331046/association-of-the-type-of-trauma-occurrence-of-bone-bruise-fracture-and-joint-effusion-with-the-injury-to-the-menisci-and-ligaments-in-mri-of-knee-trauma
#11
Sina Pezeshki, Thomas J Vogl, Mohammad Zakaria Pezeshki, Mohammad Hossein Daghighi, Masoud Pourisa
BACKGROUND: magnetic resonance imaging (MRI) as a noninvasive diagnostic tool may help clinicians in the evaluation of injuries to menisci and ligaments. PURPOSE: this study assessed the associations between type of trauma to knee joint, bone bruise, fracture and pathological joint effusion with injuries to menisci and ligaments of knee joint. METHODS: we reviewed knee joint MRI of 175 patients aged less than 45 years old who were referred to MRI center of our University...
January 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/27331034/meniscus-tear-surgery-and-meniscus-replacement
#12
REVIEW
Javier Vaquero, Francisco Forriol
OBJECTIVE: the menisci are easily injured and difficult to repair. The aim of this study was to analyze the current state of meniscal surgery aimed at preserving morphology and conserving the biomechanics of the knee to prevent joint degeneration. METHODOLOGY: a search of the electronic medical literature database Medline was conducted, from http://www.ncbi.nlm.nih.gov/pubmed. The search was not limited by language. Candidate articles were identified by searching for those that included the keywords meniscus, surgery, suture, implant, allograft...
January 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/27314948/significant-associated-mri-findings-in-patients-with-anterior-cruciate-ligament-stump-entrapment
#13
Ozgur Tosun, Ali Ocguder, Gokce Annac, Bulent Bektaser, Nurdan Cay, Utkan Karaman, Halil Arslan
OBJECTIVE: Objective of this study was to determine the relationship between development of stump entrapment (SE) lesions and associated injuries in patients with knee extension deficits who underwent anterior cruciate ligament (ACL) reconstruction surgery. MATERIALS AND METHODS: This retrospective study included 79 patients who had an arthroscopy-proven ACL rupture causing knee extension loss. Presence and type of the SE lesions, injuries of collateral-cruciate ligaments and bones, and tears of the menisci were evaluated and recorded on magnetic resonance imaging...
September 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27289278/outcomes-and-risk-factors-of-rerevision-anterior-cruciate-ligament-reconstruction-a-systematic-review
#14
Daniel J Liechti, Jorge Chahla, Chase S Dean, Justin J Mitchell, Erik Slette, Travis J Menge, Robert F LaPrade
PURPOSE: The purpose of this study was to systematically review the literature on rerevision anterior cruciate ligament (ACL) reconstruction, focusing on patient outcomes. The secondary aims of this study were to (1) identify risk factors that contribute to multiple ACL reconstruction failures (defined as a complete tear of a revision ACL graft with knee instability) and (2) assess concomitant knee injuries, such as articular cartilage and menisci lesions. METHODS: A systematic review of the literature was performed...
June 8, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27276636/arthroscopic-treatment-of-discoid-lateral-meniscus-tears-in-children-with-achondroplasia
#15
Alfred Atanda, Maegen Wallace, Michael B Bober, William Mackenzie
BACKGROUND: Achondroplasia is the most common form of skeletal dysplasia that presents to the pediatric orthopaedist. More than half of achondroplasia patients are affected with knee pain. It is thought that the majority of this pain may be due to spinal stenosis, hip pathology, or knee malalignment. Discoid menisci can be a source of lateral knee joint pain in skeletally immature patients in general. We present the first case series of patients with achondroplasia who had symptomatic discoid lateral menisci treated with arthroscopic knee surgery...
July 2016: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/27178252/conservative-treatment-of-meniscal-tears-in-anterior-cruciate-ligament-reconstruction
#16
Mattia Alessio-Mazzola, Matteo Formica, Matteo Coviello, Marco Basso, Lamberto Felli
BACKGROUND: Management of small and stable meniscal tears within the vascular zone at the time of anterior cruciate ligament (ACL) reconstruction is controversial. The purpose of this study was to evaluate the outcome of meniscal tear left in situ at the time of ACL reconstruction. METHODS: Using the IKDC, KT-1000 and the Tegner Activity Score (TAS), we retrospectively analysed 175 cases of ACL reconstruction with meniscal tears performed from 2006 to 2012. Patients with residual laxity on clinical assessment were identified and considered as a subgroup...
August 2016: Knee
https://www.readbyqxmd.com/read/27132771/clinical-outcomes-after-revision-meniscus-repair
#17
Aaron J Krych, Pat Reardon, Paul Sousa, Bruce A Levy, Diane L Dahm, Michael J Stuart
PURPOSE: To (1) report outcomes for patients who underwent revision meniscal repair and (2) define both clinical and surgical risk factors for recurrent failure. METHODS: The records of all patients who underwent revision meniscal repair between 1997 and 2012 were retrospectively reviewed. Surgical technique of primary and revision meniscus repair was detailed, and tears were characterized by type and location. Clinical examination and International Knee Documentation Committee (IKDC) and Tegner scores were used to determine outcomes after revision meniscus repair...
September 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27116480/medial-synovial-fold-of-the-posterior-cruciate-ligament-on-knee-magnetic-resonance-imaging-and-arthroscopy-retrospective-investigation-of-impingement
#18
Kyoung Ho Yoon, Dae-Hyun Tak, Ji Seon Park, Young Bin Joo, Seunghun Lee
OBJECTIVE: The purpose of this study was to classify the types of medial synovial fold of the posterior cruciate ligament (PCL) on magnetic resonance imaging (MRI) and to identify the relationships between fold type and impingement of the PCL on arthroscopy. SUBJECTS AND METHODS: Ninety-nine patients who underwent knee MRI and arthroscopy were included. All MRIs were retrospectively and independently assessed by 2 radiologists. Medial synovial folds of the PCL on MRI were categorized into 3 types...
September 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27104209/biomechanical-comparison-of-parallel-and-crossed-suture-repair-for-longitudinal-meniscus-tears
#19
Charles Milchteim, Eric A Branch, Ty Maughon, Jay Hughey, Adam W Anz
BACKGROUND: Longitudinal meniscus tears are commonly encountered in clinical practice. Meniscus repair devices have been previously tested and presented; however, prior studies have not evaluated repair construct designs head to head. This study compared a new-generation meniscus repair device, SpeedCinch, with a similar established device, Fast-Fix 360, and a parallel repair construct to a crossed construct. Both devices utilize self-adjusting No. 2-0 ultra-high molecular weight polyethylene (UHMWPE) and 2 polyether ether ketone (PEEK) anchors...
April 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27104208/the-effects-of-anterior-cruciate-ligament-deficiency-on-the-meniscus-and-articular-cartilage-a-novel-dynamic-in-vitro-pilot-study
#20
Justin W Arner, James N Irvine, Liying Zheng, Tom Gale, Eric Thorhauer, Margaret Hankins, Ermias Abebe, Scott Tashman, Xudong Zhang, Christopher D Harner
BACKGROUND: Anterior cruciate ligament (ACL) injury increases the risk of meniscus and articular cartilage damage, but the causes are not well understood. Previous in vitro studies were static, required extensive knee dissection, and likely altered meniscal and cartilage contact due to the insertion of pressure sensing devices. HYPOTHESIS: ACL deficiency will lead to increased translation of the lateral meniscus and increased deformation of the medial meniscus as well as alter cartilage contact location, strain, and area...
April 2016: Orthopaedic Journal of Sports Medicine
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