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Knee meniscus

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https://www.readbyqxmd.com/read/29047243/three-dimensional-fast-spin-echo-imaging-without-fat-suppression-of-the-knee-diagnostic-accuracy-comparison-to-fat-suppressed-imaging-on-1-5t-mri
#1
Hee Woo Cho, Jin Suck Suh, Jin Oh Park, Hyoung Sik Kim, Soo Yoon Chung, Young Han Lee, Seok Hahn
PURPOSE: To evaluate the diagnostic performance of three-dimensional fast spin-echo (3D FSE-Cube) without fat suppression (NFS) for detecting knee lesions, using comparison to 3D FSE-Cube with fat suppression (FS). MATERIALS AND METHODS: One hundred twenty-four patients who underwent 1.5T knee magnetic resonance imaging (MRI) scans and 25 subsequent arthroscopic surgeries were retrospectively reviewed. Using arthroscopic results and two-dimensional images as reference standards, diagnostic performances of 3D FSE-Cube-NFS and FS imaging about lesions of ligament, meniscus, subchondral bone marrow edema (BME), and cartilage were compared...
November 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/29042699/arthroscopic-repair-of-the-medial-meniscus-radial-oblique-tear-prevents-the-progression-of-meniscal-extrusion-in-mildly-osteoarthritic-knees
#2
Takayuki Furumatsu, Yuya Kodama, Yusuke Kamatsuki, Tomohito Hino, Toshifumi Ozaki
Extrusion of the medial meniscus (MM) is associated with knee joint pain in osteoarthritic knees. The relationships among MM radial/oblique tears, MM extrusion (MME), and the effect of arthroscopic meniscal repair are not established. Here we evaluated the effects of arthroscopic all-inside MM repair on MME and the clinical outcomes in patients with radially oriented MM tears and mildly osteoarthritic knees. Twenty patients with a symptomatic radial or oblique tear of the MM posterior segment, MME ≥2.5 mm, and mildly osteoarthritic knees were treated using FasT-Fix 360 All-inside Meniscal Suture devices...
October 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/29039501/isoimperatorin-ameliorates-osteoarthritis-by-downregulating-the-mammalian-target-of-rapamycin-c1-signaling-pathway
#3
Jiayao Ouyang, Huaji Jiang, Hang Fang, Wenbo Cui, Daozhang Cai
Osteoarthritis (OA) is the most common disease of the joints, and is characterized by the breakdown of cartilage and degradation of the extracellular matrix. OA causes a high level of patient suffering and incurs large societal costs; however, the current strategies for treating OA are restricted due to limited understanding of the underlying molecular and cellular mechanisms. In the present study, the beneficial effects of isoimperatorin (Iso) were investigated using an experimental mouse model of OA, and its mechanism of action on primary chondrocytes was elucidated...
October 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29024567/subchondral-bone-plate-sclerosis-during-late-osteoarthritis-is-caused-by-loading-induced-reduction-in-sclerostin
#4
Haoruo Jia, Xiaoyuan Ma, Yulong Wei, Wei Tong, Robert J Tower, Abhishek Chandra, Luqiang Wang, Zeyang Sun, Zhaochun Yang, Farid Badar, Kairui Zhang, Wei-Ju Tseng, Ina Kramer, Michaela Kneissel, Yang Xia, X Sherry Liu, James H-C Wang, Lin Han, Motomi Enomoto-Iwamoto, Ling Qin
OBJECTIVE: To establish an unbiased 3D approach that quantifies subchondral bone plate (SBP) changes in mouse joints and to investigate the mechanism that mediates SBP sclerosis at a late stage of osteoarthritis (OA). DESIGN: A new microCT protocol was developed to characterize the entire SBP thickness in the distal femur of a mouse knee. Four mouse models with severe joint OA were generated: cartilage-specific Egfr knockout (CKO) mice at 2 months after surgical destabilization of the medial meniscus (DMM), aged Egfr CKO mice, wild-type (WT) mice at 10 months after DMM, and WT mice after DMM plus hemisectomy of the meniscus (DMMH) surgery...
October 12, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29018143/knee-upside-down
#5
Steven G J van der Aart, Remko J A Sonnega, Dirk-Jan Hofstee
We present a case of a 19-year-old woman with a forced hyperextension trauma of the knee causing a posteromedial fracture, a medial meniscus root tear and rupture of the posterior cruciate ligament. The posteromedial fracture of the tibial plateau was treated operatively with open reduction and internal fixation. Anatomical reconstruction was achieved. Postoperative treatment included unlimited flexion and minimal weight bearing. After 3 months, the patient had minimal pain after weight bearing and returned to preoperative range of motion...
October 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29017608/autologous-mesenchymal-stem-cells-or-meniscal-cells-what-is-the-best-cell-source-for-regenerative-meniscus-treatment-in-an-early-osteoarthritis-situation
#6
Johannes Zellner, Girish Pattappa, Matthias Koch, Siegmund Lang, Johannes Weber, Christian G Pfeifer, Michael B Mueller, Richard Kujat, Michael Nerlich, Peter Angele
BACKGROUND: Treatment of meniscus tears within the avascular region represents a significant challenge, particularly in a situation of early osteoarthritis. Cell-based tissue engineering approaches have shown promising results. However, studies have not found a consensus on the appropriate autologous cell source in a clinical situation, specifically in a challenging degenerative environment. The present study sought to evaluate the appropriate cell source for autologous meniscal repair in a demanding setting of early osteoarthritis...
October 10, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28992367/in-vivo-calcium-imaging-visualizes-peripheral-neuron-sensitization-in-a-surgical-mouse-model-of-osteoarthritis
#7
Rachel E Miller, Yu Shin Kim, Phuong B Tran, Shingo Ishihara, Xinzhong Dong, Richard J Miller, Anne-Marie Malfait
OBJECTIVE: The purpose of this study was to develop a method for analyzing sensory neuron responses to mechanical stimuli in vivo, and to evaluate whether these neuronal responses change after destabilization of the medial meniscus (DMM). METHODS: DMM or sham surgery was performed in 10-week old male C57BL/6 wild-type or Pirt-GCaMP3(+/-) mice. All experiments were performed eight weeks after surgery. Knee and hind paw hyperalgesia were assessed in wild-type mice...
October 9, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28989151/-application-of-pie-crusting-the-medial-collateral-ligament-release-in-arthroscopic-surgery-for-posterior-horn-of-%C3%A2-medial-meniscus-in-knee-joint
#8
Weihong Zhu, Qi Tang, Lele Liao, Ding Li, Yang Yang, You Chen
To explore the effectiveness and safety of pie-crusting the medial collateral ligament release (MCL) in treating posterior horn of medial meniscus (PHMM) tear in tight medial tibiofemoral compartment of knee joint.
 Methods: Thirty-two consecutive patients with PHMM tear in tight medial tibiofemoral compartment of knee joint were admitted to our department from January, 2013 to December, 2014. All patients were performed pie-crusting the MCL release at its tibial insertion with 18-gauge intravenous needle...
September 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28987527/risk-factors-for-radiographic-progression-of-osteoarthritis-after-partial-meniscectomy-of-discoid-lateral-meniscus-tear
#9
J H Ahn, D M Kang, K J Choi
INTRODUCTION: Partial meniscectomy has been preferred in the treatment of discoid lateral meniscus (DLM) with tear, rather than total or subtotal meniscectomy, which could lead to late radiographic degenerative changes. HYPOTHESIS: One or more risk factors contribute to radiographic progression of osteoarthritis after partial meniscectomy of DLM tear. MATERIAL AND METHODS: Inclusion criteria were consecutive patients who underwent arthroscopic surgeries for DLM tear from January 2005 to December 2010 by one surgeon...
October 5, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28970119/age-related-changes-in-the-knee-meniscus
#10
REVIEW
Akira Tsujii, Norimasa Nakamura, Shuji Horibe
BACKGROUND: Aging is the most prominent risk factor for the development of osteoarthritis (OA), which affects knees and causes major health burdens. Meniscal dysfunction mostly based on degeneration contributes to the development and progression of knee OA. Meniscal degeneration is caused by various extrinsic factors, such as repetitive trauma or leg malalignment, while meniscal aging is considered as internal changes, such as molecular or cellular changes. Little is known about age-related changes in the meniscus...
September 29, 2017: Knee
https://www.readbyqxmd.com/read/28970118/effects-of-lateral-wedge-insole-application-on-medial-compartment-knee-osteoarthritis-severity-evaluated-by-ultrasound
#11
Yosuke Ishii, Masataka Deie, Naoto Fujita, Hiroshi Kurumadani, Masakazu Ishikawa, Atsuo Nakamae, Seiju Hayashi, Jiro Hata, Nobuo Adachi, Toru Sunagawa
BACKGROUND: It is known that a lateral wedge insole (LWI) decreases medial loading stress in the knee. Medial meniscus pathology, such as a degenerative tear or a root tear, leading to malfunction and medial meniscus extrusion (MME), is a critical condition that leads to severe osteoarthritis (OA). However, the effect of LWI on MME is still unknown. The objective of this study was to investigate the effect of LWI use on MME in knee OA using ultrasonography. METHODS: Thirty-one knees from 18 patients with knee OA diagnosed radiographically were allocated to the OA group (mean age, 73...
September 29, 2017: Knee
https://www.readbyqxmd.com/read/28969948/the-effect-of-body-mass-index-on-clinical-outcomes-in-patients-without-radiographic-evidence-of-degenerative-joint-disease-after-arthroscopic-partial-meniscectomy
#12
Melissa A Kluczynski, John M Marzo, William M Wind, Marc S Fineberg, Geoffrey A Bernas, Michael A Rauh, Zehua Zhou, Jiwei Zhao, Leslie J Bisson
PURPOSE: To examine the effect of obesity on clinical outcomes at 1 year after arthroscopic partial meniscectomy. METHODS: We conducted a secondary analysis of the ChAMP (Chondral Lesions and Meniscus Procedures) randomized controlled trial (N = 256). The visual analog scale for pain, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Knee Injury and Osteoarthritis Outcome Score (KOOS), range of motion, and presence of effusion were assessed preoperatively and at 1 year after arthroscopic partial meniscectomy...
September 29, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28969820/editorial-commentary-feeling-the-pressure-a-biomechanical-analysis-of-all-inside-and-inside-out-knee-meniscus-repair
#13
EDITORIAL
F Alan Barber
A biomechanical, time-zero comparison found that both No. 2-0 UltraBraid inside-out sutures and FasT-Fix 360 all-inside devices used to repair a displaced bucket handle knee meniscus tear increased the contact area in deeper flexion angles (at 45°-60°) and reduced the peak contact pressure (at 45°-90°). No significance difference was observed between the inside-out and all-inside repair techniques.
October 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28966381/meniscal-preservation-is-important-for-the-knee-joint
#14
Shantanu Sudhakar Patil, Anshu Shekhar, Sachin Ramchandra Tapasvi
Native joint preservation has gained importance in recent years. This is mostly to find solutions for limitations of arthroplasty. In the knee joint, the menisci perform critical functions, adding stability during range of motion and efficiently transferring load across the tibiofemoral articulation while protecting the cartilage. The menisci are the most common injury seen by orthopedicians, especially in the younger active patients. Advances in technology and our knowledge on functioning of the knee joint have made meniscus repair an important mode of treatment...
September 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28965577/effects-of-biological-factors-and-health-condition-on-mercury-and-selenium-concentrations-in-the-cartilage-meniscus-and-anterior-cruciate-ligament
#15
Danuta I Kosik-Bogacka, Natalia Lanocha-Arendarczyk, Karolina Kot, Zaneta Ciosek, Pawel Zietek, Maciej Karaczun, Bogumila Pilarczyk, Agnieszka Tomza-Marciniak, Joanna Podlasinska, Elzbieta Kalisinska, Joanna Pyzia
Due the long-term nature of joint tissue remodeling processes, knee structures including meniscus and anterior cruciate ligament (ACL) can be a model for studying the bioaccumulation of mercury (Hg) and selenium (Se). The accumulation and retention of Hg in human tissues can have a negative effect on the proper functioning of homeostasis-affecting organisms. A factor of chronic poisoning with Hg forms is probably the Se:Hg ratio in tissues. Se:Hg molar ratios below one may increase Hg toxicity potentials, while molar ratios that approach or exceed one effectively may protect against Hg toxicity...
December 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28965142/improvement-in-the-medial-meniscus-posterior-shift-following-anterior-cruciate-ligament-reconstruction
#16
Hiroto Inoue, Takayuki Furumatsu, Shinichi Miyazawa, Masataka Fujii, Yuya Kodama, Toshifumi Ozaki
PURPOSE: Anterior cruciate ligament (ACL) reconstruction can reduce the risk of developing osteoarthritic knees. The goals of ACL reconstruction are to restore knee stability and reduce post-traumatic meniscal tears and cartilage degradation. A chronic ACL insufficiency frequently results in medial meniscus (MM) injury at the posterior segment. How ACL reconstruction can reduce the deformation of the MM posterior segment remains unclear. In this study, we evaluated the form of the MM posterior segment and anterior tibial translation before and after ACL reconstruction using open magnetic resonance imaging (MRI)...
September 30, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28951643/acl-reconstruction-using-femoral-rigid-fix-and-tibial-bio-intrafix-devices
#17
Rahul Singh, Sujit Kumar Tripathy, Monappa A Naik, Premjit Sujir, Sharath K Rao
OBJECTIVES: The objective of this study is to report the clinical and functional outcomes of Hamstring graft ACL reconstruction fixed with femoral Rigid-fix and tibial Bio-intrafix devices. METHODS: In a prospective study, the clinical (Lysholm score) and functional outcomes (International Knee Documentation Committee, IKDC) of 44 patients who underwent autologus hamstring graft ACL reconstruction using femoral Rigid-fix and tibial Bio-intrafix devices, were evaluated at the end of one year...
July 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28951279/medial-meniscus-extrusion-correlates-with-disease-duration-of-the-sudden-symptomatic-medial-meniscus-posterior-root-tear
#18
Takayuki Furumatsu, Yusuke Kamatsuki, Masataka Fujii, Yuya Kodama, Yoshiki Okazaki, Shin Masuda, Toshifumi Ozaki
INTRODUCTION: Medial meniscus posterior root tear (MMPRT) leads to abnormal biomechanics of the knee by inducing the medial meniscus extrusion (MME). However, a time-dependent increase of the MME isnot fully elucidated in patients suffering from the acute MMPRT. The aim of this study was to investigate the relationships among disease duration of the MMPRT andseverity of the MME. We hypothesized that MME measurement correlates with disease duration after a sudden onset ofthe minor traumaticMMPRT during the short-term follow-up period...
September 22, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28950384/diagnostic-accuracy-of-an-mri-protocol-of-the-knee-accelerated-through-parallel-imaging-in-correlation-to-arthroscopy
#19
Johannes Walter Schnaiter, Frank Roemer, Axel McKenna-Kuettner, Hans-Joachim Patzak, Matthias Stefan May, Rolf Janka, Michael Uder, Wolfgang Wuest
Purpose Parallel imaging allows for a considerable shortening of examination times. Limited data is available about the diagnostic accuracy of an accelerated knee MRI protocol based on parallel imaging evaluating all knee joint compartments in a large patient population compared to arthroscopy. Materials and Methods 162 consecutive patients with a knee MRI (1.5 T, Siemens Aera) and arthroscopy were included. The total MRI scan time was less than 9 minutes. Meniscus and cartilage injuries, cruciate ligament lesions, loose joint bodies and medial patellar plicae were evaluated...
September 26, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28939961/acl-suturing-using-dynamic-intraligamentary-stabilisation-showing-good-clinical-outcome-but-a-high-reoperation-rate-a-retrospective-independent-study
#20
Martin Meister, Jonathan Koch, Felix Amsler, Markus P Arnold, Michael T Hirschmann
PURPOSE: Most of the clinical outcome studies dealing with ACL repair are from the developer's perspective. It is a fact that these developer-initiated studies tend to interpret the results rather in favour than against their developed technique or product. Hence, it was the purpose of the present independent investigator-initiated study to investigate the clinical and radiological outcomes as well as failure rate of patients who underwent an ACL suture using dynamic intraligamentary stabilisation device in a specialised independent knee clinic...
September 22, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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