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Meniscectomy

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https://www.readbyqxmd.com/read/28634621/role-of-mri-in-predicting-meniscal-tear-reparability
#1
Paolo Florent Felisaz, Francesco Alessandrino, Simone Perelli, Giacomo Zanon, Francesco Benazzo, Fabrizio Calliada, Luigi Sammarchi
OBJECTIVE: To elucidate the role of MRI in predicting meniscal tear reparability according to tear type and location in relation to vascular zones. MATERIALS AND METHODS: In this retrospective study, two readers evaluated 79 pre-surgical MRIs of meniscal tears arthroscopically treated with meniscectomy or meniscal repair. Tears were classified according to type into vertical, horizontal, radial, complex, flaps and bucket handle and were considered reparable if the distance measured from the tear to the menisco-capsular junction was less than or equal to 5 mm...
June 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28615040/immunohistochemical-and-immunocytochemical-study-of-mechanoreceptors-in-anterior-cruciate-ligament-reconstruction-with-the-remnant-preserving-technique-using-achilles-tendon-allografts
#2
Keun Churl Chun, Sung Hyun Lee, Jeong Woo Kim, Eun Jung Jin, Kwang Mee Kim, Churl Hong Chun
BACKGROUND: Attempts have been made to validate the significance of remnant preservation with anterior cruciate ligament (ACL) reconstruction using immunohistochemical and immunocytochemical techniques. The purpose of this study was to examine the expression of mechanoreceptors in the remnant tissue of ACL reconstruction performed with the remnant-preserving technique. METHODS: Tissue samples were obtained from 10 patients who underwent ACL reconstruction with the remnant-preserving technique...
June 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28594526/the-four-most-common-types-of-knee-cartilage-damage-encountered-in-practice-how-and-why-orthopaedic-surgeons-manage-them
#3
Brian J Chilelli, Brian J Cole, Jack Farr, Christian Lattermann, Andreas H Gomoll
Cartilage damage of the knee is common and may present in patients as a variety of symptoms. These conditions can be classified based on location, etiology, and/or pathophysiology. A systematic approach to the evaluation and classification of chondral injuries helps improve definitive management. The four most common types of knee cartilage damage are osteochondritis dissecans, incidental chondral defects, patellofemoral defects, and defects encountered after meniscectomy.
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28580268/endoscopic-resection-of-medial-extra-articular-cysts-of-the-knee
#4
Tun Hing Lui
Although most of the parameniscal cysts are very small and asymptomatic, some of them can present with a painful mass or snapping knee. Because parameniscal cysts are almost always associated with horizontal meniscal tears, arthroscopic partial meniscectomy of the involved part of meniscus and intra-articular cyst drainage has become the most accepted procedure. However, arthroscopic cyst decompression through partial meniscectomy to the meniscocapsular junction to expose the communication between the cyst and the knee joint may sacrifice some of the healthy parts of the meniscus especially when meniscal tear is peripheral...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28557557/subsequent-surgery-after-revision-anterior-cruciate-ligament-reconstruction-rates-and-risk-factors-from-a-multicenter-cohort
#5
David Y Ding, Alan L Zhang, Christina R Allen, Allen F Anderson, Daniel E Cooper, Thomas M DeBerardino, Warren R Dunn, Amanda K Haas, Laura J Huston, Brett Brick A Lantz, Barton Mann, Kurt P Spindler, Michael J Stuart, Rick W Wright, John P Albright, Annunziato Ned Amendola, Jack T Andrish, Christopher C Annunziata, Robert A Arciero, Bernard R Bach, Champ L Baker, Arthur R Bartolozzi, Keith M Baumgarten, Jeffery R Bechler, Jeffrey H Berg, Geoffrey A Bernas, Stephen F Brockmeier, Robert H Brophy, Charles A Bush-Joseph, J Brad Butler, John D Campbell, James L Carey, James E Carpenter, Brian J Cole, Jonathan M Cooper, Charles L Cox, R Alexander Creighton, Diane L Dahm, Tal S David, David C Flanigan, Robert W Frederick, Theodore J Ganley, Elizabeth A Garofoli, Charles J Gatt, Steven R Gecha, James Robert Giffin, Sharon L Hame, Jo A Hannafin, Christopher D Harner, Norman Lindsay Harris, Keith S Hechtman, Elliott B Hershman, Rudolf G Hoellrich, Timothy M Hosea, David C Johnson, Timothy S Johnson, Morgan H Jones, Christopher C Kaeding, Ganesh V Kamath, Thomas E Klootwyk, Bruce A Levy, C Benjamin Ma, G Peter Maiers, Robert G Marx, Matthew J Matava, Gregory M Mathien, David R McAllister, Eric C McCarty, Robert G McCormack, Bruce S Miller, Carl W Nissen, Daniel F O'Neill, Brett D Owens, Richard D Parker, Mark L Purnell, Arun J Ramappa, Michael A Rauh, Arthur C Rettig, Jon K Sekiya, Kevin G Shea, Orrin H Sherman, James R Slauterbeck, Matthew V Smith, Jeffrey T Spang, Steven J Svoboda, Timothy N Taft, Joachim J Tenuta, Edwin M Tingstad, Armando F Vidal, Darius G Viskontas, Richard A White, James S Williams, Michelle L Wolcott, Brian R Wolf, James J York
BACKGROUND: While revision anterior cruciate ligament reconstruction (ACLR) can be performed to restore knee stability and improve patient activity levels, outcomes after this surgery are reported to be inferior to those after primary ACLR. Further reoperations after revision ACLR can have an even more profound effect on patient satisfaction and outcomes. However, there is a current lack of information regarding the rate and risk factors for subsequent surgery after revision ACLR. PURPOSE: To report the rate of reoperations, procedures performed, and risk factors for a reoperation 2 years after revision ACLR...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28552823/high-failure-rate-of-anterior-cruciate-ligament-reconstruction-with-bimeniscal-repair-acase-control-study
#6
H Gonçalves, C Steltzlen, P Boisrenoult, P Beaufils, N Pujol
BACKGROUND: Bimeniscal lesions are common in patients with anterior cruciate ligament (ACL) tears. However, bimeniscal repair is rarely performed during ACL reconstruction. OBJECTIVE: To assess outcomes after ACL reconstruction with bimeniscal repair. HYPOTHESIS: Bimeniscal lesions, even when repaired, are associated with poorer outcomes of ACL reconstruction. MATERIALANDMETHODS: A retrospective case-control design was used...
May 25, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28545179/the-efficacy-of-meniscal-treatment-associated-with-lateral-tibial-plateau-fractures
#7
Hyun-Joo Park, Hui-Du Lee, Jin Ho Cho
Purpose: The purpose of this study was to examine the incidence of lateral meniscal tears associated with lateral tibial plateau fractures and report the clinical outcomes of meniscal treatment with internal fixation of fractures. Materials and Methods: All lateral tibial plateau fractures (Schatzker types II and III) in skeletally mature patients treated operatively at our institution between January 2010 and February 2016 were included. All patients underwent open reduction and internal fixation using a buttress plate or cancellous screws...
June 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28522452/arthroscopic-partial-meniscectomy-versus-placebo-surgery-for-a-degenerative-meniscus-tear-a-2-year-follow-up-of-the-randomised-controlled-trial
#8
Raine Sihvonen, Mika Paavola, Antti Malmivaara, Ari Itälä, Antti Joukainen, Heikki Nurmi, Juha Kalske, Anna Ikonen, Timo Järvelä, Tero Ah Järvinen, Kari Kanto, Janne Karhunen, Jani Knifsund, Heikki Kröger, Tommi Kääriäinen, Janne Lehtinen, Jukka Nyrhinen, Juha Paloneva, Outi Päiväniemi, Marko Raivio, Janne Sahlman, Roope Sarvilinna, Sikri Tukiainen, Ville-Valtteri Välimäki, Ville Äärimaa, Pirjo Toivonen, Teppo Ln Järvinen
OBJECTIVE: To assess if arthroscopic partial meniscectomy (APM) is superior to placebo surgery in the treatment of patients with degenerative tear of the medial meniscus. METHODS: In this multicentre, randomised, participant-blinded and outcome assessor-blinded, placebo-surgery controlled trial, 146 adults, aged 35-65 years, with knee symptoms consistent with degenerative medial meniscus tear and no knee osteoarthritis were randomised to APM or placebo surgery. The primary outcome was the between-group difference in the change from baseline in the Western Ontario Meniscal Evaluation Tool (WOMET) and Lysholm knee scores and knee pain after exercise at 24 months after surgery...
May 18, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28521277/the-spatio-temporal-mechanical-environment-of-healthy-and-injured-human-cartilage-during-sustained-activity-and-its-role-in-cartilage-damage
#9
Saeed Miramini, David W Smith, Lihai Zhang, Bruce S Gardiner
Recently we presented a computational model of articular cartilage calibrated for normal human tissue explants. This model was able to capture the transient deformation of cartilage experiencing a cyclic load. The model takes into account the tension-compression nonlinearity of the cartilage and incorporates the dependency of the compressive stiffness and fluid permeability of cartilage on the deformation-dependent aggrecan concentration in cartilage tissue. As such it represents a leading constitutive model of articular cartilage...
May 10, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28510478/two-tunnel-transtibial-repair-of-radial-meniscus-tears-produces-comparable-results-to-inside-out-repair-of-vertical-meniscus-tears
#10
Mark E Cinque, Andrew G Geeslin, Jorge Chahla, Grant J Dornan, Robert F LaPrade
BACKGROUND: Radial meniscus tears disrupt the circumferential fibers and thereby compromise meniscus integrity. Historically, radial tears were often treated with meniscectomy because of an incomplete understanding of the biomechanical consequences of these tears, limited information regarding the biomechanical performance of repair, and the technical difficulty associated with repair. There is a paucity of studies on the outcomes of the repair of radial meniscus tears. Purpose/Hypothesis: The purpose was to determine the outcomes of 2-tunnel transtibial repair of radial meniscus tears and compare these results to the outcomes of patients who underwent the repair of vertical meniscus tears with a minimum of 2-year follow-up...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28507957/arthroscopic-synovectomy-in-bilateral-lipoma-arborescens
#11
Paolo Fornaciari, Pascal A Schai, Michael O Kurrer, G Ulrich Exner
INTRODUCTION: Lipoma arborescens (LA) is an uncommon condition that consists of a villous lipomatous proliferation of the synovial membrane. Open synovectomy has been previously selected as a curative treatment option. In recent years, some authors have published good results with arthroscopic interventions. We describe a well-documented case of bilateral LA of the knees treated with staged arthroscopic synovectomy. CASE REPORT: A 48-year-old North American woman without a history of trauma presented with recurrent effusions and mild pain in both knee joints for many years...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28493217/what-is-the-mid-term-failure-rate-of-revision-acl-reconstruction-a-systematic-review
#12
Alberto Grassi, Christopher Kim, Giulio Maria Marcheggiani Muccioli, Stefano Zaffagnini, Annunziato Amendola
BACKGROUND: When anterior cruciate ligament (ACL) reconstruction fails, a revision procedure may be performed to improve knee function, correct instability, and allow return to activities. The results of revision ACL reconstruction have been reported to produce good but inferior patient-reported and objective outcomes compared with primary ACL reconstruction, but the degree to which this is the case varies widely among published studies and may be influenced by heterogeneity of patients, techniques, and endpoints assessed...
May 10, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28486025/efficacy-and-persistence-of-allogeneic-adipose-derived-mesenchymal-stem-cells-combined-with-hyaluronic-acid-in-osteoarthritis-after-intra-articular-injection-in-a-sheep-model
#13
Chenchen Feng, Xuan Luo, Na He, Huitang Xia, Xiaoteng Lv, Xue Zhang, Dan Li, Fei Wang, Jiaping He, Li Zhang, Xiangming Lin, Liping Lin, Huabin Yin, Jiyin He, Jinwu Wang, Wei Cao, Richard Wang, Guangdong Zhou, Wen Wang
Although a number of studies have reported efficacy of autologous adipose-derived mesenchymal stem cells (AD-MSCs) in treating osteoarthritis (OA), no reliable evidences demonstrate whether allogeneic AD-MSCs can efficiently block OA progression in a large animal model. The current study explored the efficacy and survival of allogeneic AD-MSCs combined with hyaluronic acid (HA) after intra-articular (IA) injection in a sheep OA model, which were conventionally established by anterior cruciate ligament resection and medial meniscectomy...
May 9, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28451708/anterior-meniscopexy-a-meniscal-sparing-technique-for-the-treatment-of-locking-but-intact-discoid-lateral-meniscus
#14
Benjamin Johnson, Catriona Heaver, Robin Gilbert, Andrew Roberts
PURPOSE: Symptomatic discoid lateral meniscus without tears has traditionally been treated with excision of part or the entire meniscus. Resection of 15-34% of the meniscus increases tibiofemoral contact pressures by more than 350%. Treatment of discoid lateral meniscus with partial or total meniscectomy in childhood increases the risk of early-onset osteoarthritis in the knee. The incidence of osteoarthritis is directly proportional to the amount of meniscal tissue resected. This paper describes the meniscus-preserving technique of meniscopexy and presents the outcomes of all patients who have undergone this procedure in the management of lateral discoid meniscus in a single unit over a 14-year period...
April 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28450318/the-protective-role-of-nitric-oxide-dependent-innate-immunosuppression-in-the-early-stage-of-cartilage-damage-in-rats-role-of-nitric-oxide-in-cartilage-damage
#15
C-C Hsu, C-L Lin, I-M Jou, P-H Wang, J-S Lee
OBJECTIVES: Osteoarthritis (OA) is the most common form of arthritis, affecting approximately 15% of the human population. Recently, increased concentration of nitric oxide in serum and synovial fluid in patients with OA has been observed. However, the exact role of nitric oxide in the initiation of OA has not been elucidated. The aim of the present study was to investigate the role of nitric oxide in innate immune regulation during OA initiation in rats. METHODS: Rat OA was induced by performing meniscectomy surgery while cartilage samples were collected 0, 7, and 14 days after surgery...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28419809/knee-biomechanics-during-jogging-after-arthroscopic-partial-meniscectomy-a-longitudinal-study
#16
Michelle Hall, Tim V Wrigley, Ben R Metcalf, Rana S Hinman, Flavia M Cicuttini, Alasdair R Dempsey, David G Lloyd, Kim L Bennell
BACKGROUND: Altered knee joint biomechanics is thought to play a role in the pathogenesis of knee osteoarthritis and has been reported in patients after arthroscopic partial meniscectomy (APM) while performing various activities. Longitudinally, understanding knee joint biomechanics during jogging may assist future studies to assess the implications of jogging on knee joint health in this population. PURPOSE: To investigate knee joint biomechanics during jogging in patients 3 months after APM and a healthy control group at baseline and 2 years later at follow-up...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28410217/pterostilbene-inhibits-inflammation-and-ros-production-in-chondrocytes-by-activating-nrf2-pathway
#17
En-Xing Xue, Jian-Ping Lin, Yu Zhang, Sun-Ren Sheng, Hai-Xiao Liu, Yu-Long Zhou, Hui Xu
Pterostilbene has been reported as a potential drug to inhibit oxidative stress and inflammation. However, the effect of pterostilbene on chondrocytes and osteoarthritis remains to be elucidated. We sought to investigate whether pterostilbene could protect chondrocytes from inflammation and ROS production through factor erythroid 2-related factor 2 (Nrf2) activation. The pterostilbene toxicity on chondrocytes collected from cartilages of Sprague-Dawley rats was assessed by CCK-8 test. Immunofluorescence and Western blotting explored the nuclear translocation of Nrf2...
March 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28397004/the-frequency-of-cartilage-lesions-in-non-injured-knees-with-symptomatic-meniscus-tears-results-from-an-arthroscopic-and-nir-near-infrared-spectroscopic-investigation
#18
Gunter Spahn, Holger Plettenberg, Martin Hoffmann, Holm-Torsten Klemm, Christoph Brochhausen-Delius, Gunther O Hofmann
INTRODUCTION: Are symptomatic tear injuries to the menisci of the knee frequently or always associated with cartilage damage to the corresponding articular surfaces and other joint surfaces, respectively? METHODS: A total of 137 patients (medial n = 127; lateral n = 10) underwent a meniscus resection. These patients showed no signs of a clear radiographic arthrosis and no MRI-detectable cartilage lesions > grade II. Traumatic injury was ruled out with a thorough medical history...
April 10, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28383764/risk-factors-for-radiographic-joint-space-narrowing-and-patient-reported-outcomes-of-post-traumatic-osteoarthritis-after-acl-reconstruction-data-from-the-moon-cohort
#19
Morgan H Jones, Kurt P Spindler
The Multicenter Orthopaedic Outcomes Network (MOON) is an NIH-funded prospective, longitudinal cohort of over 3,500 patients who have undergone anterior cruciate ligament reconstruction (ACLR) by 14 sports medicine surgeons at 7 academic medical centers. Patient reported outcome questionnaires (PRO's) are completed at baseline and multiple timepoints after surgery, and a nested cohort of patients return for radiographs to assess the development of joint space changes. We review the risk factors for worse patient reported outcomes, the predictors of clinically significant symptoms of post-traumatic osteoarthritis (PTOA), and the factors associated with more radiographic joint space narrowing...
April 6, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28373139/actifit-%C3%A2-polyurethane-meniscal-scaffold-mri-and-functional-outcomes-after-a-minimum-follow-up-of-5%C3%A2-years
#20
A Leroy, P Beaufils, B Faivre, C Steltzlen, P Boisrenoult, N Pujol
BACKGROUND: Implantation of the Actifit(®) polyurethane meniscal scaffold in patients who have pain after partial meniscectomy provides short-term pain relief and better function. But there is a lack of information about medium-term outcomes. The objective of this longitudinal study was to evaluate the MRI and functional outcomes after a minimum follow-up of 5 years. It was hypothesized that the results are stable over time. MATERIAL AND METHODS: Fifteen consecutive patients (8 men, 7 women; mean age 30 years, range 19-47, mean BMI 25) were enrolled in the study between February 2008 and January 2011...
June 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
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