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https://www.readbyqxmd.com/read/28444676/-associated-injuries-in-radial-head-fractures
#1
Patrick Vavken, Julia Vavken, Stefan Demarmels, Daniel Rikli
Purpose Radial head fractures, particularly Mason I and II, are considered "harmless" injuries, and their severity is underestimated. In recent years, associated injuries to ligaments, cartilage, and adjacent bones have been studied in more detail. This meta-analysis collects the data on their incidence from the current literature. Methods A systematic review of the online databases PubMed, EMBASE, CINAHL and Cochrane Library was performed to identify clinical studies on associated injuries in radial head fracture...
April 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28439305/costal-cartilage-transplantation-for-treatment-of-growth-plate-injury-in-a-rabbit-model
#2
D Otsuki, K Yoshida, M Kobayashi, D Hamano, C Higuchi, H Yoshikawa
OBJECTIVES: The purpose of this study is to evaluate the effects of allogenic costal cartilage transplantation on preventing bony bridge formation and angular deformities for the treatment of partial growth plate injury using a rabbit model. METHODS: An experimental model of partial growth injury was created by resecting the medial part of the proximal tibial growth plate in male six-week-old New Zealand White rabbits. The rabbits were divided into four groups: no surgery; no transplantation; bone wax transplantation; and allogenic costal cartilage transplantation...
2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28438606/cell-origin-volume-and-arrangement-are-drivers-of-articular-cartilage-formation-morphogenesis-and-response-to-injury-in-mouse-limbs
#3
Rebekah S Decker, Hyo-Bin Um, Nathaniel A Dyment, Naiga Cottingham, Yu Usami, Motomi Enomoto-Iwamoto, Mark S Kronenberg, Peter Maye, David W Rowe, Eiki Koyama, Maurizio Pacifici
Limb synovial joints are composed of distinct tissues, but it is unclear which progenitors produce those tissues and how articular cartilage acquires its functional postnatal organization characterized by chondrocyte columns, zone-specific cell volumes and anisotropic matrix. Using novel Gdf5(CreERT2) (Gdf5-CE), Prg4-CE and Dkk3-CE mice mated to R26-Confetti or single-color reporters, we found that knee joint progenitors produced small non-migratory progenies and distinct local tissues over prenatal and postnatal time...
April 21, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28437755/an-in-vitro-study-of-cartilage-meniscus-tribology-to-understand-the-changes-caused-by-a-meniscus-implant
#4
Sara Ehsani Majd, Aditya Iman Rizqy, Hans J Kaper, Tannin A Schmidt, Roel Kuijer, Prashant K Sharma
Active lifestyles increase the risk of meniscal injury. A permanent meniscus implant of polycarbonate urethane (PCU) is a promising treatment to postpone/prevent total knee arthroplasty. Study of the changes in articular cartilage tribology in the presence of PCU is essential in developing the optimum meniscus implant. Therefore, a cartilage-meniscus reciprocating, sliding model was developed in vitro, mimicking the stance and swing phases of the gait cycle. The meniscus was further replaced with PCU and surface-modified PCUs (with C18 chains, mono-functional polydimethylsiloxane groups and mono-functional polytetrafluoroethylene groups) to study the changes...
April 18, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28436462/mir-146b-is-down-regulated-during-the-chondrogenic-differentiation-of-human-bone-marrow-derived-skeletal-stem-cells-and-up-regulated-in-osteoarthritis
#5
Emma Budd, María C de Andrés, Tilman Sanchez-Elsner, Richard O C Oreffo
Articular cartilage injury can result in chondrocyte loss and diminishment of specialised extracellular matrix, which can progress to an osteoarthritic (OA) phenotype. Stem cells have emerged as a favourable approach for articular cartilage regeneration. Identification of miRNAs which influence stem cell fate offers new approaches for application of miRNAs to regenerate articular cartilage. Skeletal stem cells (SSCs) isolated from human bone marrow were cultured as high density micromass' using TGF-β3 to induce chondrogenesis...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28434038/emerging-potential-of-gene-silencing-approaches-targeting-anti-chondrogenic-factors-for-cell-based-cartilage-repair
#6
REVIEW
Andrea Lolli, Letizia Penolazzi, Roberto Narcisi, Gerjo J V M van Osch, Roberta Piva
The field of cartilage repair has exponentially been growing over the past decade. Here, we discuss the possibility to achieve satisfactory regeneration of articular cartilage by means of human mesenchymal stem cells (hMSCs) depleted of anti-chondrogenic factors and implanted in the site of injury. Different types of molecules including transcription factors, transcriptional co-regulators, secreted proteins, and microRNAs have recently been identified as negative modulators of chondroprogenitor differentiation and chondrocyte function...
April 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28429082/the-effect-of-a-combined-thoracic-and-soft-tissue-trauma-on-blood-flow-and-tissue-formation-in-fracture-healing-in-rats
#7
Lutz Claes, Florian Gebhard, Anita Ignatius, Raimund Lechner, Stefan Baumgärtel, Michael Kraus, Gert D Krischak
INTRODUCTION: Previously, it was found that fracture healing is impaired by blunt chest trauma and an additional soft-tissue trauma. The mechanisms leading to this disturbance are largely unknown. Here, we investigated the effect of thoracic and soft-tissue trauma on blood flow of the injured lower leg and on tissue differentiation and callus formation during fracture healing. MATERIALS AND METHODS: Male Wistar rats received either a mid-shaft fracture of the tibia alone (group A), an additional chest trauma (group B), or additional chest and soft-tissue traumas (group C)...
April 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28426243/analysis-of-2019-patients-undergoing-revision-anterior-cruciate-ligament-reconstruction-from-a-community-based-registry
#8
Afshin Arianjam, Maria C S Inacio, Tadashi T Funahashi, Gregory B Maletis
BACKGROUND: Knowledge of patient characteristics, surgical fixation, graft choice, outcomes, and concurrent injuries of revision anterior cruciate ligament reconstruction (ACLR) is limited. PURPOSE: To describe the current cohort of revision ACLR captured by a community registry and the outcomes observed in the registered patients. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Patients who underwent revision ACLR registered between February 2005 and June 2014, by 200 surgeons in 46 hospitals, were evaluated...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28425824/isolated-acl-versus-multiple-knee-ligament-injury-associations-with-patient-characteristics-cartilage-status-and-meniscal-tears-identified-during-acl-reconstruction
#9
Ronald W B Wyatt, Maria C S Inacio, Kate D Bellevue, Alan L Schepps, Gregory B Maletis
OBJECTIVES: The objectives of this study were to determine (1) if patients undergoing reconstruction of an isolated anterior cruciate ligament (ACL) tear had different characteristics (age, gender, body mass index [BMI]) than patients undergoing ACL reconstruction (ACLR) with multiple knee ligament (MKL) tears and (2) whether there was a difference in prevalence of articular cartilage injury and meniscus tears between these two groups. METHODS: Patients undergoing primary ACLR between February 2005 and September 2013 were identified through an ACLR registry...
April 20, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28423287/microfracture-versus-autologous-chondrocyte-implantation-for-articular-cartilage-lesions-in-the-knee-a-systematic-review-of-5-year-outcomes
#10
Matthew J Kraeutler, John W Belk, Justin M Purcell, Eric C McCarty
BACKGROUND: Microfracture (MFx) and autologous chondrocyte implantation (ACI) are 2 surgical treatment options used to treat articular cartilage injuries of the knee joint. PURPOSE: To compare the midterm to long-term clinical outcomes of MFx versus ACI for focal chondral defects of the knee. STUDY DESIGN: Systematic review. METHODS: A systematic review was performed by searching PubMed, the Cochrane Library, and Embase to locate studies (level of evidence I-III) comparing the minimum average 5-year clinical outcomes of patients undergoing MFx versus ACI...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28423042/transforming-growth-factor-%C3%AE-1-enhances-heme-oxygenase-1-expression-in-human-synovial-fibroblasts-by-inhibiting-microrna-519b-synthesis
#11
Shu-Jui Kuo, Wei-Hung Yang, Shan-Chi Liu, Chun-Hao Tsai, Horng-Chaung Hsu, Chih-Hsin Tang
BACKGROUND: Osteoarthritis (OA) is manifested by synovial inflammation and cartilage destruction that is directly linked to synovitis, joint swelling and pain. In the light of the role of synovium in the pathogenesis and the symptoms of OA, synovium-targeted therapy is a promising strategy to mitigate the symptoms and progression of OA. Transforming growth factor beta 1 (TGF-β1), a secreted homodimeric protein, possesses unique and potent anti-inflammatory and immune-regulatory properties in many cell types...
2017: PloS One
https://www.readbyqxmd.com/read/28419808/outcomes-after-1-stage-versus-2-stage-revision-anterior-cruciate-ligament-reconstruction
#12
Justin J Mitchell, Jorge Chahla, Chase S Dean, Mark Cinque, Lauren M Matheny, Robert F LaPrade
BACKGROUND: Revision anterior cruciate ligament reconstruction (ACLR) is becoming increasingly common as the number of primary ACLR cases continues to rise. Despite this, there are limited data on the outcomes of revision ACLR and even less information specifically addressing the differences in 1-stage revision reconstruction versus those performed in a 2-stage fashion after primary reconstruction. PURPOSE: To compare the outcomes, patient satisfaction, and failure rates of 1-stage versus 2-stage revision ACLR...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28417917/minicircle-mediated-gene-delivery-to-canine-and-equine-mesenchymal-stem-cells
#13
Naomie Tidd, Jacob Michelsen, Bryan Hilbert, Jane C Quinn
Gene-directed tissue repair offers the clinician, human or veterinary, the chance to enhance cartilage regeneration and repair at a molecular level. Non-viral plasmid vectors have key biosafety advantages over viral vector systems for regenerative therapies due to their episomal integration however, conventional non-viral vectors can suffer from low transfection efficiency. Our objective was to identify and validate in vitro a novel non-viral gene expression vector that could be utilized for ex vivo and in vivo delivery to stromal-derived mesenchymal stem cells (MSCs)...
April 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28417444/a-retinaculum-sparing-surgical-approach-preserves-porcine-stifle-joint-cartilage-in-an-experimental-animal-model-of-cartilage-repair
#14
Marcelo B Bonadio, James M Friedman, Mackenzie L Sennett, Robert L Mauck, George R Dodge, Henning Madry
BACKGROUND: This study compares a traditional parapatellar retinaculum-sacrificing arthrotomy to a retinaculum-sparing arthrotomy in a porcine stifle joint as a cartilage repair model. FINDINGS: Surgical exposure of the femoral trochlea of ten Yucatan pigs stifle joint was performed using either a traditional medial parapatellar approach with retinaculum incision and luxation of the patella (n = 5) or a minimally invasive (MIS) approach which spared the patellar retinaculum (n = 5)...
December 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28413465/protective-effects-of-baicalin-on-rabbit-articular-chondrocytes-in-vitro
#15
Xianyuan Huang, Huayu Wu, Liqin Wang, Li Zheng, Jinmin Zhao
Drug therapy is one of the typical treatments for post-injury inflammation of cartilage. Traditional Chinese herbs have potential as treatments, as their long history of clinical application has demonstrated they are effective and induce minimal side effects. Baicalin is a traditional Chinese medicine that has been used to treat inflammation, fever, ulcers and cancer for hundreds of years. Previous studies have demonstrated that baicalin may decrease levels of interleukin-1β and suppress the expression of type-I collagen, thus attenuating cartilage degeneration...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28411451/anisotropic-tough-double-network-hydrogel-from-fish-collagen-and-its-spontaneous-in%C3%A2-vivo-bonding-to-bone
#16
Md Tariful Islam Mredha, Nobuto Kitamura, Takayuki Nonoyama, Susumu Wada, Keiko Goto, Xi Zhang, Tasuku Nakajima, Takayuki Kurokawa, Yasuaki Takagi, Kazunori Yasuda, Jian Ping Gong
Soft supporting tissues in the human body, such as cartilages and ligaments, are tough materials and firmly fixed to bones. These soft tissues, once injured, cannot regenerate spontaneously in vivo. Developing tough and biocompatible hydrogels as artificial soft supporting tissues would substantially improve outcomes after soft tissue injury. Collagen is the main rigid component in soft connective tissues which is organized in various hierarchical arrays. We have successfully developed a novel class of collagen fibril-based tough hydrogels based on the double network (DN) concept using swim bladder collagen (SBC) extracted from Bester sturgeon fish...
July 2017: Biomaterials
https://www.readbyqxmd.com/read/28409337/surgical-considerations-with-the-operative-fixation-of-unstable-paediatric-pelvic-ring-injuries
#17
Mohamed Kenawey
INTRODUCTION: The operative treatment of unstable pelvic injuries in paediatrics is not frequently indicated. The detailed modes of pelvic ring failure, surgical techniques, fixation choices, and peri-operative difficulties are not well reported. METHODS: From September 2010 to March 2016, 62 paediatric patients were admitted to an academic level I trauma center with the diagnosis of pelvic ring injury. Of them, 29 (17 males and 12 females) had operative fixation of unstable pelvic injuries...
April 13, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28406954/therapeutic-efficacy-of-intra-articular-hyaluronan-derivative-and-platelet-rich-plasma-in-mice-following-axial-tibial-loading
#18
Xin Duan, Linda J Sandell, Nobuaki Chinzei, Nilsson Holguin, Matthew J Silva, Antonella Schiavinato, Muhammad Farooq Rai
OBJECTIVE: To investigate the therapeutic potential of intra-articular hyaluronan-derivative HYADD® 4-G and/or platelet-rich plasma (PRP) in a mouse model of non-invasive joint injury. METHODS: Non-invasive axial tibial loading was used to induce joint injury in 10-week-old C57BL/6J mice (n = 86). Mice underwent a single loading of either 6 Newton (N) or 9N axial tibial compression. HYADD® 4-G was injected intra-articularly at 8 mg/mL or 15 mg/mL either before or after loading with or without PRP...
2017: PloS One
https://www.readbyqxmd.com/read/28406879/physical-examination-of-the-knee-meniscus-cartilage-and-patellofemoral-conditions
#19
Robert D Bronstein, Joseph C Schaffer
The knee is one of the most commonly injured joints in the body. Its superficial anatomy enables diagnosis of the injury through a thorough history and physical examination. Examination techniques for the knee described decades ago are still useful, as are more recently developed tests. Proper use of these techniques requires understanding of the anatomy and biomechanical principles of the knee as well as the pathophysiology of the injuries, including tears to the menisci and extensor mechanism, patellofemoral conditions, and osteochondritis dissecans...
May 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28400880/arthroscopic-findings-in-anterior-shoulder-instability
#20
REVIEW
Michael Hantes, Vasilios Raoulis
BACKGROUND: In the last years, basic research and arthroscopic surgery, have improved our understanding of shoulder anatomy and pathology. It is a fact that arthroscopic treatment of shoulder instability has evolved considerably over the past decades. The aim of this paper is to present the variety of pathologies that should be identified and treated during shoulder arthroscopy when dealing with anterior shoulder instability cases. METHODS: A review of the current literature regarding arthroscopic shoulder anatomy, anatomic variants, and arthroscopic findings in anterior shoulder instability, is presented...
2017: Open Orthopaedics Journal
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