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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
#1
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
#2
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
https://www.readbyqxmd.com/read/29624738/meniscal-extrusion-and-degeneration-during-the-course-of-osteoarthritis-in-the-murine-collagenase-induced-osteoarthritis-model
#3
Lizette Utomo, Susanne M Eijgenraam, Duncan E Meuffels, Sita M A Bierma-Zeinstra, Yvonne M Bastiaansen-Jenniskens, Gerjo J V M van Osch
Meniscal damage is, despite its major role in knee osteoarthritis (OA), often neglected in OA animal models. We evaluated structural meniscal degeneration during the course of OA in the murine collagenase-induced OA (CIOA) model. To investigate this, OA was induced in the knee joints of 33 male C57BL/6 mice by an intra-articular injection of 10U collagenase. The mice were sacrificed after 1, 3, 7, 14, 28, and 56 days, and the knees were harvested and processed for histological analysis. As control, 6 knees were obtained from 16-week-old mice in which no OA was induced...
April 6, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29622245/editorial-commentary-we-know-we-need-to-fix-knee-meniscal-radial-root-tears-but-how-best-to-perform-the-repairs
#4
EDITORIAL
Robert F LaPrade
The present work further contributes to building the base of the research pyramid by noting the importance of repairing knee meniscal radial root tears. Because of the extensive biomechanical studies that have now been published on the restoration of joint mechanics and with what I believe results in a higher likelihood of an improved healing environment with securing the meniscus root tear down to bone, I would strongly recommend that when one does see a meniscus root tear that the transtibial pullout root repair technique be considered over a side-to-side repair...
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29618652/the-metalloproteinase-proteoglycans-adamts7-and-adamts12-provide-an-innate-tendon-specific-protective-mechanism-against-heterotopic-ossification
#5
Timothy J Mead, Daniel R McCulloch, Jason C Ho, Yaoyao Du, Sheila M Adams, David E Birk, Suneel S Apte
Heterotopic ossification (HO) is a significant clinical problem with incompletely resolved mechanisms. Here, the secreted metalloproteinases ADAMTS7 and ADAMTS12 are shown to comprise a unique proteoglycan class that protects against a tendency toward HO in mouse hindlimb tendons, menisci, and ligaments. Adamts7 and Adamts12 mRNAs were sparsely expressed in murine forelimbs but strongly coexpressed in hindlimb tendons, skeletal muscle, ligaments, and meniscal fibrocartilage. Adamts7-/- Adamts12-/- mice, but not corresponding single-gene mutants, which demonstrated compensatory upregulation of the intact homolog mRNA, developed progressive HO in these tissues after 4 months of age...
April 5, 2018: JCI Insight
https://www.readbyqxmd.com/read/29613868/biomechanical-consequences-of-meniscal-tear-partial-meniscectomy-and-meniscal-repair-in-the-knee
#6
Brian C Lau, Devin Conway, Jeffrey Mulvihill, Alan Z Zhang, Brian T Feeley
No abstract text is available yet for this article.
April 3, 2018: JBJS Reviews
https://www.readbyqxmd.com/read/29610972/combined-reconstruction-of-the-anterolateral-ligament-in-chronic-acl-injuries-leads-to-better-clinical-outcomes-than-isolated-acl-reconstruction
#7
Camilo Partezani Helito, Danilo Bordini Camargo, Marcel Faraco Sobrado, Marcelo Batista Bonadio, Pedro Nogueira Giglio, José Ricardo Pécora, Gilberto Luis Camanho, Marco Kawamura Demange
PURPOSE: To evaluate the results of combined anterior cruciate ligament (ACL) and anterolateral ligament (ALL) reconstruction in patients with chronic ACL injury. It was hypothesized that patients who underwent combined ACL and ALL reconstruction would exhibit less residual laxity and better clinical outcomes. METHODS: Two groups of patients were evaluated and compared retrospectively. Both groups consisted only of patients with chronic (more than 12 months) ACL injuries...
April 2, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29607459/the-role-of-meniscal-repair-for-prevention-of-early-onset-of-osteoarthritis
#8
REVIEW
Johannes Weber, Matthias Koch, Peter Angele, Johannes Zellner
BACKGROUND: The meniscus plays an important role in the integrity of the knee joint. Therefore, meniscus tissue preserving techniques for the therapy of meniscus injuries seem to be reasonable. One of the important questions is whether meniscal repair can prevent the knee joint from early onset of osteoarthritis. METHODS: According to the review of the current literature, the principles of a successful meniscal repair are explained and the functional outcome and its impact on the prevention of osteoarthritis are analyzed in this article...
April 2, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29605083/hydraulic-permeability-of-meniscus-fibrocartilage-measured-via-direct-permeation-effects-of-tissue-anisotropy-water-volume-content-and-compressive-strain
#9
Kelsey L Kleinhans, Alicia R Jackson
Hydraulic permeability is an important material property of cartilaginous tissues, governing the rate of fluid flow, which is crucial to tissue biomechanics and cellular nutrition. The effects of strain, anisotropy, and region on the hydraulic permeability in meniscus tissue have not been fully elucidated. Using a one-dimensional direct permeation test, we measured the hydraulic permeability within statically compressed porcine meniscus specimens, prepared such that the explants were in either the axial or circumferential direction of either the central or horn (axial direction only) region of the medial and lateral menisci...
March 16, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29600679/-diagnostic-value-of-mri-for-posterior-root-tear-of-medial-and-lateral-meniscus
#10
Yue-Nan Qian, Fang Liu, Yi-Long Dong, Chun-Yuan Cai
OBJECTIVE: To explore diagnostic value of MRI on posterior root tear of medial and lateral meniscus. METHODS: From January 2012 to January 2016, clinical data of 43 patients with meniscal posterior root tear confirmed by arthroscopy were retrospective analyzed, including 25 males and 18 females, aged from 27 to 69 years old with an average age of(42.5±8.3)years old;27 cases on the right side and 16 cases on the left side. MRI examinations of 43 patients with tear of posterior meniscus root confirmed by knee arthroscopies were retrospectively reviewed...
March 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29600217/double-posterior-cruciate-ligament-sign-on-magnetic-resonance-imaging-imaging-variants-mimics-and-clinical-implications
#11
Raju Vaishya, Vipul Vijay, Abhishek Vaish, Amit K Agarwal, Nitin P Ghonge
Introduction: Double posterior cruciate ligament (PCL) sign is a sign on magnetic resonance imaging (MRI) which is suggestive of a bucket- handle tear (BHT) of the meniscus. We undertook this study to assess the presence of a double PCL sign and its correlation with arthroscopic findings. We also discussed the various mimics and variants of the double PCL sign. Case Report: All the patients with a double PCL sign on the MRI and who underwent knee arthroscopy between January 2012 and December 2016 (total of 5 cases, 4 males and one female) were included in the study...
November 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29589491/risk-factors-for-progression-of-articular-cartilage-damage-after-anatomical-anterior-cruciate-ligament-reconstruction
#12
A Nakamae, N Adachi, M Deie, M Ishikawa, T Nakasa, Y Ikuta, M Ochi
Aims To investigate the risk factors for progression of articular cartilage damage after anatomical anterior cruciate ligament (ACL) reconstruction. Patients and Methods A total of 174 patients who underwent second-look arthroscopic evaluation after anatomical ACL reconstruction were enrolled in this study. The graded condition of the articular cartilage at the time of ACL reconstruction was compared with that at second-look arthroscopy. Age, gender, body mass index (BMI), ACL reconstruction technique, meniscal conditions, and other variables were assessed by regression analysis as risk factors for progression of damage to the articular cartilage...
March 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29578774/greater-static-anterior-tibial-subluxation-of-the-lateral-compartment-after-an-acute-anterior-cruciate-ligament-injury-is-associated-with-an-increased-posterior-tibial-slope
#13
Guan-Yang Song, Hui Zhang, Jin Zhang, Xin Liu, Zhe Xue, Yi Qian, Hua Feng
BACKGROUND: Static anterior tibial subluxation of the lateral compartment after an anterior cruciate ligament (ACL) injury highlights an increased anterior position of the tibia relative to the femur. However, the precise cause of this phenomenon is not entirely clear. Recently, an increased posterior tibial slope (PTS) has been identified as an independent risk factor for noncontact ACL injuries. HYPOTHESIS: An increased PTS is associated with an increased anterior position of the lateral compartment of the tibia relative to the femur after acute ACL injuries...
March 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29574455/meniscal-root-tears-a-silent-epidemic
#14
Mark E Cinque, Jorge Chahla, Gilbert Moatshe, Scott C Faucett, Aaron J Krych, Robert F LaPrade
No abstract text is available yet for this article.
March 24, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29573933/capsulodesis-versus-bone-trough-technique-in-lateral-meniscal-allograft-transplantation-graft-extrusion-and-functional-results
#15
Angel Masferrer-Pino, Joan C Monllau, Maximiliano Ibáñez, Juan I Erquicia, Xavier Pelfort, Pablo E Gelber
PURPOSE: To compare the radiographic results (in terms of graft extrusion) and the functional results of lateral meniscus allograft transplantations (MAT) performed with a bony fixation technique or with a soft tissue fixation technique after capsulodesis. METHODS: A prospective series of 29 consecutive lateral MAT was analyzed. The inclusion criterion for MAT was lateral joint line pain due to a previous meniscectomy. Malalignment, patients who had an Ahlback grade greater than II, and patients with a body mass index over 30 were considered as the exclusion criterion to prevent confounding results...
March 21, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29570766/arthroscopic-repair-of-chronic-tears-of-the-anterior-horn-of-the-lateral-meniscus-that-includes-covering-the-lesion-with-an-infrapatellar-pedicle-fat-flap
#16
Zhu Dai, Zhiwei Chen, Ying Liao, Zhengwu Tang, Juncheng Cui, Zhibin Tang
This study analyzed the efficacy and safety of arthroscopic outside-in repair of the anterior horn of the lateral meniscus that includes covering the lesion with an infrapatellar pedicle fat flap in patients with chronic tears. This retrospective study reviewed 87 patients with chronic tears of the anterior horn of the lateral meniscus who underwent arthroscopic outside-in repair, which included covering the lesion with an infrapatellar pedicle fat flap (group A, n=45) or not (group B, n=42). The 2 groups were similar in terms of age, sex, body mass index, and disease duration...
March 23, 2018: Orthopedics
https://www.readbyqxmd.com/read/29564448/intra-articular-tsg-6-delivery-from-heparin-based-microparticles-reduces-cartilage-damage-in-a-rat-model-of-osteoarthritis
#17
Liane E Tellier, Elda A Treviño, Alexandra L Brimeyer, David S Reece, Nick J Willett, Robert E Guldberg, Johnna S Temenoff
As a potential treatment for osteoarthritis (OA), we have developed injectable and hydrolytically degradable heparin-based biomaterials with tunable sulfation for the intra-articular delivery of tumor necrosis factor-alpha stimulated gene-6 (TSG-6), a protein known to inhibit plasmin which may degrade extracellular matrix within OA joints. We first assessed the effect of heparin sulfation on TSG-6 anti-plasmin activity and found that while fully sulfated (Hep) and heparin desulfated at only the N position (Hep-N) significantly enhanced TSG-6 bioactivity in vitro, fully desulfated heparin (Hep-) had no effect, indicating that heparin sulfation plays a significant role in modulating TSG-6 bioactivity...
March 22, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29564055/medial-meniscal-root-repair-using-curved-guide-and-soft-suture-anchor
#18
Su-Keon Lee, Bong-Seok Yang, Byeong-Mun Park, Ji-Ung Yeom, Ji-Hyeon Kim, Jeong-Seok Yu
Medial meniscal root tears have been repaired using various methods. Arthroscopic all-inside repair using a suture anchor is one of the popular methods. However, insertion of the suture anchor into the proper position at the posterior root of the medial meniscus is technically difficult. Some methods have been reported to facilitate suture anchor insertion through a high posteromedial portal, a posterior trans-septal portal, or a medial quadriceptal portal. Nevertheless, many surgeons still have difficulty during anchor insertion...
March 2018: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/29556892/successful-anterior-cruciate-ligament-reconstruction-and-meniscal-repair-in-osteogenesis-imperfecta
#19
Jae-Young Park, Tae-Joon Cho, Myung Chul Lee, Hyuk-Soo Han
A case of anterior cruciate ligament (ACL) reconstruction with meniscal repair in an osteogenesis imperfecta patient is reported. A 24-year-old female with osteogenesis imperfecta type 1a suffered from a valgus extension injury resulting in tear of ACL and medial meniscus. She underwent an arthroscopic-assisted ACL reconstruction and medial meniscus repair. Meniscal tear at the menisco-capsular junction of the posterior horn of medial meniscus was repaired with three absorbable sutures via inside-out technique...
March 20, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29552463/bone-trough-lateral-meniscal-allograft-transplantation-the-tapered-teardrop-technique
#20
Michael A Zacchilli, Amos Z Dai, Eric J Strauss, Laith M Jazrawi, Robert J Meislin
The meniscus plays a vital role in knee biomechanics, and its physical absence or functional incompetence (e.g., irreparable root or radial tear) leads to unacceptably high rates of joint degeneration in affected populations. Meniscal allograft transplantation has been used successfully to treat patients with postmeniscectomy syndrome, and there is early laboratory and radiographic evidence hinting at a potential prophylactic role in preventing joint degeneration. We present a technique for lateral meniscal allograft transplantation using the CONMED Meniscal Allograft Transplantation system...
December 2017: Arthroscopy Techniques
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