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https://www.readbyqxmd.com/read/28210945/mr-imaging-evaluation-of-the-postoperative-meniscus
#1
REVIEW
A Russo, R Capasso, C Varelli, A Laporta, M Carbone, G D'Agosto, S Giovine, M Zappia, A Reginelli
MR imaging has been widely evaluated in the assessment of patients with recurrent or residual symptoms following meniscal surgery. Importantly, the causes of such symptoms may relate to failure or complication of the surgical procedure, a possible recurrent or residual meniscal tear, or may be related to other causes of joint symptoms, including tears of the contralateral meniscus, or local hyaline cartilage, or marrow abnormalities subjacent to or distant to the meniscal surgical site. The complex diagnostic issues involved in the MR imaging evaluation of the postoperative meniscus were identified in early MR imaging studies...
February 16, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28210788/surgical-management-of-degenerative-meniscus-lesions-the-2016-esska-meniscus-consensus
#2
Ph Beaufils, R Becker, S Kopf, M Englund, R Verdonk, M Ollivier, R Seil
PURPOSE: A degenerative meniscus lesion is a slowly developing process typically involving a horizontal cleavage in a middle-aged or older person. When the knee is symptomatic, arthroscopic partial meniscectomy has been practised for a long time with many case series reporting improved patient outcomes. Since 2002, several randomised clinical trials demonstrated no additional benefit of arthroscopic partial meniscectomy compared to non-operative treatment, sham surgery or sham arthroscopic partial meniscectomy...
February 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28210648/utilization-of-platelet-rich-plasma-for-musculoskeletal-injuries-an-analysis-of-current-treatment-trends-in-the-united-states
#3
Joanne Y Zhang, Peter D Fabricant, Chad R Ishmael, Jeffrey C Wang, Frank A Petrigliano, Kristofer J Jones
BACKGROUND: Platelet-rich plasma (PRP) has emerged as a popular biologic treatment for musculoskeletal injuries and conditions. Despite numerous investigations on the efficacy of PRP therapy, current utilization of this treatment within the United States is not widely known. PURPOSE: To investigate the national utilization of PRP, including the incidence and conditions for which it is used in the clinical setting, and to determine the current charges associated with this treatment...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28203596/intra-articular-implantation-of-mesenchymal-stem-cells-part-2-a-review-of-the-literature-for-meniscal-regeneration
#4
Matthew J Kraeutler, Justin J Mitchell, Jorge Chahla, Eric C McCarty, Cecilia Pascual-Garrido
Knee osteoarthritis (OA) after partial or total meniscectomy is a prevalent issue that patients must face. Various methods of replacing meniscal tissue have been studied to avoid this progression, including meniscal allograft transplantation, meniscal scaffolds, and synthetic meniscus replacement. Studies have shown that meniscal scaffolds may improve symptoms but have not been shown to prevent progression of OA. Recently, mesenchymal stem cells (MSCs) have been proposed as a possible biological therapy for meniscal regeneration...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28203587/why-do-authors-differ-with-regard-to-the-femoral-and-meniscal-anatomic-parameters-of-the-knee-anterolateral-ligament-dissection-by-layers-and-a-description-of-its-superficial-and-deep-layers
#5
Camilo Partezani Helito, Carlos do Amaral, Yuri da Cunha Nakamichi, Riccardo Gomes Gobbi, Marcelo Batista Bonadio, Renato José Mendonça Natalino, José Ricardo Pécora, Tulio Pereira Cardoso, Gilberto Luis Camanho, Marco Kawamura Demange
BACKGROUND: No consensus exists regarding the anatomic characteristics of the knee anterolateral ligament (ALL). A critical analysis of the dissections described in previous studies allows the division of the ALL into 2 groups with similar characteristics. The presence of considerable variability suggests that the authors may not be referring to the same structure. PURPOSE/HYPOTHESIS: To perform a lateral anatomic dissection, by layers, seeking to characterize the 2 variants described for the ALL on the same knee...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28203586/comparison-of-kinematics-and-tibiofemoral-contact-pressures-for-native-and-transplanted-lateral-menisci
#6
Patrick C McCulloch, Donald Dolce, Hugh L Jones, Andrea Gale, Michael G Hogen, Jason Alder, Jeremiah E Palmer, Philip C Noble
BACKGROUND: Lateral meniscus transplantation is a proven treatment option for the meniscus-deficient knee, yet little is known about meniscal kinematics, strain, and tibiofemoral contact pressure changes after transplantation or the effect of altered root position in lateral meniscus transplantation. PURPOSE: To compare the native lateral meniscal kinematics, strain, and tibiofemoral contact pressures to a best-case scenario meniscus transplant with perfectly matched size and position and to determine how sensitive these factors are to subtle changes in shape and position by using a nonanatomic meniscus transplant position...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28197696/large-meniscus-extrusion-ratio-is-a-poor-prognostic-factor-of-conservative-treatment-for-medial-meniscus-posterior-root-tear
#7
Yoon-Ho Kwak, Sahnghoon Lee, Myung Chul Lee, Hyuk-Soo Han
PURPOSE: The purpose of this study was to find a prognostic factor of medial meniscus posterior root tear (MMPRT) for surgical decision making. METHODS: Eighty-eight patients who were diagnosed as acute or subacute MMPRT without severe degeneration of the meniscus were treated conservatively for 3 months. Fifty-seven patients with MMPRT showed good response to conservative treatment (group 1), while the remaining 31 patients who failed to conservative treatment (group 2) received arthroscopic meniscus repair...
February 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28197693/predictive-factors-for-osteochondritis-dissecans-of-the-lateral-femoral-condyle-concurrent-with-a-discoid-lateral-meniscus
#8
Junsei Takigami, Yusuke Hashimoto, Tomohiro Tomihara, Shinya Yamasaki, Koji Tamai, Kyoko Kondo, Hiroaki Nakamura
PURPOSE: Osteochondritis dissecans (OCD) of the lateral femoral condyle is relatively rare, and it is often reported in combination with discoid lateral meniscus. However, little is known about the mechanism underlying this connection. Predictive factors for OCD coinciding with discoid lateral meniscus in Japanese children and adolescents were assessed. METHODS: During 2000-2015, 152 knees in 133 patients aged 5-15 years were diagnosed with symptomatic complete discoid lateral meniscus...
February 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28193143/conscious-performance-and-arthroscopic-findings-in-athletes-with-anterior-cruciate-ligament-injuries-treated-via-conservative-therapy-during-the-competitive-season
#9
Yasushi Takata, Junsuke Nakase, Tatsuhiro Toratani, Hitoaki Numata, Takeshi Oshima, Katsuhiko Kitaoka, Hiroyuki Tsuchiya
PURPOSE: Athletes often receive conservative treatment for injured anterior cruciate ligaments (ACLs) so that they can continue to play to the end of their season. The purpose of this study was to examine the conscious performance and arthroscopic findings of athletes who received conservative therapy for ACL injuries. METHODS: Forty-two patients with ACL injuries underwent conservative treatment. After the season ended, ACL reconstruction was performed. We examined the following parameters: (1) time required for return to competition after injury, (2) conscious performance after return to competition, (3) whether the injured knee gave way during conservative therapy or after return to competition, and (4) cause of performance deterioration if applicable...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28190582/correlation-of-parameters-on-preoperative-ct-images-with-intra-articular-soft-tissue-injuries-in-acute-tibial-plateau-fractures-a-review-of-132-patients-receiving-arif
#10
Hao-Che Tang, I-Jung Chen, Yu-Cheng Yeh, Chun-Jui Weng, Shih-Sheng Chang, Alvin Chao-Yu Chen, Yi-Sheng Chan
INTRODUCTION: Tibial plateau fractures often occur in conjunction with soft-tissue injuries of knees. The hypothesis of this study is that parameters of CT imaging can predict intra-articular soft-tissue injuries. PATIENTS AND METHODS: Patients who underwent arthroscopically assisted reduction and internal fixation (ARIF) for acute tibial plateau fractures performed by a single orthopedic surgeon between 2005 and 2015 were included in this retrospective study. Patients with concomitant ipsilateral femoral fractures, who had received revision surgery or who had undergone index surgery more than 30days from the event were excluded...
January 30, 2017: Injury
https://www.readbyqxmd.com/read/28186682/repair-of-torn-avascular-meniscal-cartilage-using-undifferentiated-autologous-mesenchymal-stem-cells-from-in-vitro-optimization-to-a-first-in-human-study
#11
Michael R Whitehouse, Nicholas R Howells, Michael C Parry, Eric Austin, Wael Kafienah, Kyla Brady, Allen E Goodship, Jonathan D Eldridge, Ashley W Blom, Anthony P Hollander
Meniscal cartilage tears are common and predispose to osteoarthritis (OA). Most occur in the avascular portion of the meniscus where current repair techniques usually fail. We described previously the use of undifferentiated autologous mesenchymal stem cells (MSCs) seeded onto a collagen scaffold (MSC/collagen-scaffold) to integrate meniscal tissues in vitro. Our objective was to translate this method into a cell therapy for patients with torn meniscus, with the long-term goal of delaying or preventing the onset of OA...
December 15, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28184957/partial-meniscectomy-provides-no-benefit-for-symptomatic-degenerative-medial-meniscus-posterior-root-tears
#12
Aaron J Krych, Nick R Johnson, Rohith Mohan, Diane L Dahm, Bruce A Levy, Michael J Stuart
PURPOSE: Medial meniscus posterior root tears (MMPRTs) are recognized as a source of pain and dysfunction, but treatment options remain a challenge. The purpose of the study was to determine (1) the efficacy of partial meniscectomy to treat MMPRTs compared to a matched group of non-operatively treated MMPRTs, and (2) risk factors for worse clinical and radiographic outcome. METHODS: This retrospective comparative study was performed to include patients with complete, isolated MMPRTs with documented clinical symptoms and were treated with arthroscopic partial meniscectomy (PMM) and a minimum 2-year follow-up...
February 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28181577/age-dependent-changes-in-the-articular-cartilage-and-subchondral-bone-of-c57bl-6-mice-after-surgical-destabilization-of-medial-meniscus
#13
Henry Huang, Jordan D Skelly, David C Ayers, Jie Song
Age is the primary risk factor for osteoarthritis (OA), yet surgical OA mouse models such as destabilization of the medial meniscus (DMM) used for evaluating disease-modifying OA targets are frequently performed on young adult mice only. This study investigates how age affects cartilage and subchondral bone changes in mouse joints following DMM. DMM was performed on male C57BL/6 mice at 4 months (4 M), 12 months (12 M) and 19+ months (19 M+) and on females at 12 M and 18 M+. Two months after surgery, operated and unoperated contralateral knees were harvested and evaluated using cartilage histology scores and μCT quantification of subchondral bone plate thickness and osteophyte formation...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28169099/the-role-of-medial-meniscus-posterior-root-tear-and-proximal-tibial-morphology-in-the-development-of-spontaneous-osteonecrosis-and-osteoarthritis-of-the-knee
#14
Ryota Yamagami, Shuji Taketomi, Hiroshi Inui, Keitaro Tahara, Sakae Tanaka
BACKGROUND: Medial meniscus posterior root tear (MMPRT) has been reported to play a key role in the development of spontaneous osteonecrosis of the knee (SONK) and osteoarthritis (OA) of the knee. However, little is known about the differences in the development of SONK and OA after MMPRT. The purpose of this study was to investigate the factors contributing to the development of these conditions. METHODS: We evaluated the existence of MMPRT and the extent of medial meniscal extrusion in preoperative magnetic resonance images and proximal tibial morphology in radiographs of 45 patients with SONK and 104 patients with OA who underwent knee surgery...
February 3, 2017: Knee
https://www.readbyqxmd.com/read/28164061/arthroscopic-meniscectomy-and-meniscoplasty-for-a-torn-discoid-medial-meniscus-case-report-surgical-technique-and-literature-review
#15
Gokhale Nikhil Abhay, Samant Ashwin, Shahane Sunil, Kapopara Hardik
INTRODUCTION: Normal menisci of the knee are semilunar structures. Sometimes, a meniscus may be found to be thickened and disc like and is called a discoid meniscus. Such a discoid variant is usually found in the lateral meniscus. Its occurrence in the medial meniscus is extremely rare. CASE REPORT: We report a case of an 18-year-old female, who presented to us with knee pain and was found to have a discoid medial meniscus with a tear. We operated on her arthroscopically and performed meniscectomy and meniscoplasty...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28164045/ipsilateral-medial-and-lateral-discoid-meniscus-with-medial-meniscus-tear
#16
Kengo Shimozaki, Junsuke Nakase, Yoshinori Ohashi, Hitoaki Numata, Takeshi Oshima, Yasushi Takata, Hiroyuki Tsuchiya
INTRODUCTION: Discoid meniscus is a well-documented knee pathology, and there are many cases of medial or lateral discoid meniscus reported in the literature. However, ipsilateral concurrent medial and lateral discoid meniscus is very rare, and only a few cases have been reported. Herein, we report a case of concurrent medial and lateral discoid meniscus. CASE REPORT: A 27-year-old Japanese man complained of pain on medial joint space in his right knee that was diagnosed as a complete medial and lateral discoid meniscus...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28160013/high-tibial-osteotomy-accelerates-lateral-compartment-osteoarthritis-in-discoid-meniscus-patients
#17
Jatin Prakash, Eun-Kyoo Song, Hong An Lim, Young Joo Shin, Cheng Jin, Jong-Keun Seon
PURPOSE: The valgus high tibial osteotomy (HTO) in patients with medial osteoarthritis and discoid lateral meniscus can result in increased load on the lateral compartment and hence a higher chances of tear. This may accelerate the progression of osteoarthritis on lateral compartment. We, therefore, carried out the case control study with a hypothesis that an HTO would accelerate the progression of osteoarthritis (OA) on lateral compartment in patients with complete discoid meniscus. METHODS: The records of all patients with open wedge HTO from 2008 to 2012 were evaluated for complete lateral discoid meniscus...
February 3, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28159718/mechanical-function-near-defects-in-an-aligned-nanofiber-composite-is-preserved-by-inclusion-of-disorganized-layers-insight-into-meniscus-structure-and-function
#18
Sonia Bansal, Sai Mandalapu, Céline Aeppli, Feini Qu, Spencer E Szczesny, Robert L Mauck, Miltiadis H Zgonis
: The meniscus is comprised of circumferentially aligned fibers that resist the tensile forces within the meniscus (i.e., hoop stress) that develop during loading of the knee. Although these circumferential fibers are severed by radial meniscal tears, tibial contact stresses do not increase until the tear reaches ∼90% of the meniscus width, suggesting that the severed circumferential fibers still bear load and maintain the mechanical functionality of the meniscus. Recent data demonstrates that the interfibrillar matrix can transfer strain energy to disconnected fibrils in tendon fascicles...
January 31, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28147215/attenuated-synovial-fluid-ghrelin-levels-are-linked-with-cartilage-damage-meniscus-injury-and-clinical-symptoms-in-patients-with-knee-anterior-cruciate-ligament-deficiency
#19
Yu-Cong Zou, Liang-Hua Chen, Yong-Liang Ye, Guang-Gang Yang, Zheng Mao, Dan-Dan Liu, Jun-Qi Chen, Jing-Jie Chen, Gang Liu
BACKGROUND: The meniscus injury and post-traumatic knee osteoarthritis (PTOA) following anterior cruciate ligament (ACL) lesions often cause great burdens to patients. Ghrelin, a recently identified 28-amino-acid peptide, has been shown to inhibit inflammation and perform as a growth factor for chondrocyte. OBJECTIVE: This study was aimed at investigating ghrelin concentration in synovial fluid and its association with the degree of meniscus injury, articular degeneration, and clinical severity in patients suffering from anterior cruciate ligament (ACL) deficiency...
December 2016: Discovery Medicine
https://www.readbyqxmd.com/read/28142351/epidemiology-of-surgically-managed-anterior-cruciate-ligament-ruptures-in-a-sports-surgery-practice
#20
Andrew Arjun Sayampanathan, Bryan Koh Thean Howe, Hamid Rahmatullah Bin Abd Razak, Chong Hwei Chi, Andrew Hwee Chye Tan
INTRODUCTION: Anterior cruciate ligament (ACL) tears are common knee injuries, especially among sportsmen and sportswomen. The aim of this study is to better understand the epidemiology of surgically managed ACL tears sustained in our institution. METHODS: All patients who underwent arthroscopic ACL reconstruction by the senior author of this article in Singapore from 2008 to 2013 were studied. Patients who were diagnosed clinically and/or radiologically to have a complete tear of the ACL and subsequently underwent arthroscopic ACL reconstruction were included...
January 2017: Journal of Orthopaedic Surgery
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