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Cartilage injuries

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https://www.readbyqxmd.com/read/28225087/ampk-deficiency-in-chondrocytes-accelerated-the-progression-of-instability-induced-and-ageing-associated-osteoarthritis-in-adult-mice
#1
Sheng Zhou, Wanli Lu, Liang Chen, Qiting Ge, Dongyang Chen, Zhihong Xu, Dongquan Shi, Jin Dai, Jianxin Li, Huangxian Ju, Yi Cao, Jinzhong Qin, Shuai Chen, Huajian Teng, Qing Jiang
Osteoarthritis (OA) is a progressive degenerative disease of the joints that is associated with both joint injury and ageing. Here, we investigated the role of the energy sensor AMP-activated protein kinase (AMPK) in maintaining a healthy state of articular cartilage and in OA development. Using cartilage-specific, tamoxifen-inducible AMPKα1 conditional knockout (AMPKα1 cKO), AMPKα2 conditional knockout (AMPKα2 cKO) and AMPKα1α2 conditional double knockout (AMPKα cDKO) mice, we found that compared with wild-type (WT) littermates, mutant mice displayed accelerated severity of surgically induced OA, especially AMPKα cDKO mice...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28214464/cell-based-treatment-for-the-management-of-articular-cartilage-injuries-where-are-we
#2
William Rossy, Eric Strauss
Articular cartilage is a specialized tissue that lines the surface of joints. Injuries to articular cartilage pose challenges due to poor healing potential. Focal cartilage defects are typically the result of high impact or repetitive loads to the articular surface. They tend to occur in the younger, active population and have been shown to cause swelling, pain, and joint dysfunction. Although the natural history of these lesions has never been definitively elucidated in the literature, clinical experience suggests that if left untreated, these lesions will demonstrate an inability to heal and may lead to prolonged increased articular peak stresses, which in turn may lead to pain and significant limitations in the future...
January 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28213953/the-effects-of-acl-graft-placement-on-in-vivo-knee-function-and-cartilage-thickness-distributions
#3
REVIEW
Louis E DeFrate
Injuries to the anterior cruciate ligament (ACL) frequently lead to early-onset osteoarthritis. Despite advancement in surgical techniques, ACL reconstruction has a limited ability to prevent these degenerative changes. While previous studies have investigated knee function after ACL reconstruction, in vivo investigations of the effects of graft placement on in vivo joint function and cartilage health are limited. This review presents a series of studies that used novel imaging and 3D modeling techniques to determine the in vivo placement of the ACL graft on the femur using two different ACL reconstruction techniques...
February 18, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28211591/magnetic-resonance-imaging-of-the-knee-an-overview-and-update-of-conventional-and-state-of-the-art-imaging
#4
Nicholas C Nacey, Matthew G Geeslin, Grady Wilson Miller, Jennifer L Pierce
: Magnetic resonance imaging (MRI) has become the preferred modality for imaging the knee to show pathology and guide patient management and treatment. The knee is one of the most frequently injured joints, and knee pain is a pervasive difficulty that can affect all age groups. Due to the diverse pathology, complex anatomy, and a myriad of injury mechanisms of the knee, the MRI knee protocol and sequences should ensure detection of both soft tissue and osseous structures in detail and with accuracy...
February 17, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28210648/utilization-of-platelet-rich-plasma-for-musculoskeletal-injuries-an-analysis-of-current-treatment-trends-in-the-united-states
#5
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/28203112/bone-contusion-progression-from-traumatic-knee-injury-association-of-rate-of-contusion-resolution-with-injury-severity
#6
Douglas R Pedersen, Georges Y El-Khoury, Dan R Thedens, Mothana Saad-Eldine, Phinit Phisitkul, Annunziato Amendola
BACKGROUND: Bone contusions are frequently encountered in magnetic resonance imaging (MRI) evaluation of knee anterior cruciate ligament (ACL) injuries. Their role as indicators of injury severity remains unclear, primarily due to indeterminate levels of joint injury forces and to a lack of preinjury imaging. PURPOSE: The purpose of this study was to 1) quantify bone contusion pathogenesis following traumatic joint injuries using fixed imaging follow-ups, and 2) assess the feasibility of using longitudinal bone contusion volumes as an indicator of knee injury severity...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28199881/the-influence-of-early-degenerative-changes-on-the-vulnerability-of-articular-cartilage-to-impact-induced-injury
#7
Joshua Workman, Ashvin Thambyah, Neil Broom
BACKGROUND: Recently, the structural changes in a bovine model of early degeneration were validated by our research group to be analogous to that in early human osteoarthritis. The hypothesis of this study was that the structural changes associated with increasing levels of degeneration would lead to higher levels of tissue damage in response to impact induced injury. METHODS: A total of forty bovine patellae were obtained for this study. Cartilage-on-bone samples were extracted from the distal lateral quarter, a region known to be affected by varying levels of degeneration...
January 4, 2017: Clinical Biomechanics
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
#8
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/28192826/the-management-of-bone-defects-in-periarticular-knee-injuries-a-review-article
#9
Brian Buck, Yvonne M Murtha
Traumatic bone defects of the distal femur and proximal tibia present treatment challenges for the orthopaedic traumatologist. In addition to bone loss, significant soft tissue compromise and cartilage defects leave the patient and surgeon with few reconstructive options for proper long-term joint function. These injuries are often complicated by delayed healing, nonunion, malunion, infection, and poor subjective patient outcomes. There are a variety of clinical problems associated with the treatment of periarticular fractures about the knee...
February 13, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28184267/prediction-of-endotracheal-tube-size-for-pediatric-patients-from-the-epiphysis-diameter-of-radius
#10
Hee Young Kim, Ji Hyun Cheon, Seung Hoon Baek, Kyung Hoon Kim, Tae Kyun Kim
BACKGROUND: Using a too big or a too small size of an endotracheal tube in pediatric patients would result in tracheal injury or insufficient ventilation. Determining the appropriate endotracheal tube size is important because using an inappropriate size can cause complications. This study was performed to predict the appropriate endotracheal tube size by measuring the transverse diameter of the epiphysis of the distal radius under the assumption that the growth rates of cartilages in the entire body are close to each other...
February 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/28181132/anti-tgf%C3%AE-1-receptor-inhibitor-mediates-the-efficacy-of-the-human-umbilical-cord-mesenchymal-stem-cells-against-liver-fibrosis-through-tgf%C3%AE-1-smad-pathway
#11
Ji Xuan, Wang Feng, Zheng-Tao An, Jian Yang, Hua-Bing Xu, Jing Li, Zhi-Fei Zhao, Wei Wen
The aim of the current investigation was to evaluate the anti-fibrosis potential of human umbilical cord mesenchymal stem cells (hUC-MSCs) and further to explore some of its underlying mechanisms. Hepatic fibrosis mice model was induced by CCl4. Liver function parameters in serum and fibrosis-associated markers in tissues were detected. Moreover, SB-431542, an anti-TGFβ-1 receptor inhibitor, was employed in vitro to reveal the underlying mechanism of TGFβ-1/Smad pathway on hUC-MSCs against liver fibrosis...
February 8, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28177194/concise-review-mesenchymal-stem-cells-for-functional-cartilage-tissue-engineering-taking-cues-from-chondrocyte-based-constructs
#12
Andrea R Tan, Clark T Hung
Osteoarthritis, the most prevalent form of joint disease, afflicts 9% of the U.S. population over the age of 30 and costs the economy nearly $100 billion annually in healthcare and socioeconomic costs. It is characterized by joint pain and dysfunction, though the pathophysiology remains largely unknown. Due to its avascular nature and limited cellularity, articular cartilage exhibits a poor intrinsic healing response following injury. As such, significant research efforts are aimed at producing engineered cartilage as a cell-based approach for articular cartilage repair...
February 8, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28176602/comparison-of-hto-with-articular-cartilage-surgery-and-uka-in-unicompartmental-oa
#13
Yoon Sang Jeon, Chi Hoon Ahn, Myung-Ku Kim
PURPOSE: The purpose of this article was to assess the clinical outcome of high tibial osteotomy (HTO) with articular cartilage surgery compared with unicompartmental knee arthroplasty (UKA) in unicompartmental osteoarthritis (OA). METHODS: We designed retrospective study and evaluated 47 patients with unicompartmental OA (Kellgren-Laurence [K-L] grade ≥III OA). Two groups of patients underwent either HTO with articular cartilage surgery or UKA by the senior author between January 2010 and April 2013...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28170076/biomimetic-sulphated-alginate-hydrogels-suppress-il-1%C3%AE-induced-inflammatory-responses-in-human-chondrocytes
#14
Ø Arlov, M Steinwachs, G Skjåk-Bræk, M Zenobi-Wong
Loss of articular cartilage from ageing, injury or degenerative disease is commonly associated with inflammation, causing pain and accelerating degradation of the cartilage matrix. Sulphated glycosaminoglycans (GAGs) are involved in the regulation of immune responses in vivo, and analogous polysaccharides are currently being evaluated for tissue engineering matrices to form a biomimetic environment promoting tissue growth while suppressing inflammatory and catabolic activities. Here, we characterise physical properties of sulphated alginate (S-Alg) gels for use in cartilage engineering scaffolds, and study their anti-inflammatory effects on encapsulated chondrocytes stimulated with IL-1β...
February 7, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28169595/tissue-derived-extracellular-matrix-bioscaffolds-emerging-applications-in-cartilage-and-meniscus-repair
#15
Farrah A Monibi, James Lee Cook
Musculoskeletal injuries are a common and significant problem in orthopaedic practice. Given the long-term consequences of unaddressed cartilage and meniscal pathology, a number of treatments have been attempted to stimulate repair or to replace the injured tissue. Despite advances in orthopaedic surgery, effective treatments for cartilage and meniscus injuries remain a common and significant clinical challenge. Tissue engineering is a developing field that aims to regenerate injured tissues with a combination of cells, scaffolds, and signals...
February 7, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28167976/chondroprotective-effects-and-multitarget-mechanisms-of-fu-yuan-capsule-in-a-rat-osteoarthritis-model
#16
Li Zeng, Cai Zhi Xiao, Zi Ting Deng, Rong Heng Li
Fu Yuan Capsule (FYC) has been clinically used for osteoarthritis (OA) and its related diseases for many years in China. However, its pharmacological mechanism remains unclear. This study aimed to investigate the potential chondroprotective effects of FYC on articular cartilage. Rat OA model was induced by anterior cruciate ligament transection. A group of rats was treated with FYC for 12 weeks. Joint structure, types I and II collagen, and proteoglycan were evaluated by histological examination. The expression of C-terminal crosslinking telopeptide of type II collagen, hydroxyproline, a disintegrin and metalloproteinase with thrombospondin motifs, matrix metalloproteinase, interleukin-1 beta, nitric oxide, prostaglandin E2, heat-shock protein 70, transforming growth factor-beta, osteoprotegerin, and receptor activator of nuclear factor κB ligand were detected...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28167061/chopart-injuries-when-to-fix-and-when-to-fuse
#17
REVIEW
Stefan Rammelt, Tim Schepers
Chopart joint injuries have a profound effect on global foot function. Surgical treatment aims at joint reconstruction and axial alignment with restoration of the normal relationship of the lateral and medial foot columns. Internal fixation is tailored to the individual fracture pattern and achieved with resorbable pins, Kirschner wires, screws, and/or anatomically shaped minifragment plates. If instability persists, temporary joint transfixation may be achieved with Kirschner wires or bridge plating. Primary fusion sacrifices essential joints and should be reserved for severe initial cartilage damage...
March 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/28164046/treatment-of-the-bullet-traversing-femoral-neck-lodged-in-hip-joint-initial-arthroscopic-removal-and-subsequent-cartilage-repair
#18
Mehmet Faruk Çatma, Serhan Ünlü, Önder Ersan, Alper Öztürk
INTRODUCTION: There have been several reports on arthroscopically assisted removal of the bullet imbedded in hip joint in the literature. Similarly, in this case, a bullet lodged in acetabulum was extracted with arthroscopic technique. What makes this case unique in the literature is that the bullet removed from the acetabulum traversed the femoral neck. CASE REPORT: Male patient aged 32 years with a low-velocity gunshot wound was referred to the emergency room on August 28, 2012...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28150869/biochemical-markers-of-cartilage-metabolism-are-associated-with-walking-biomechanics-six-months-following-anterior-cruciate-ligament-reconstruction
#19
Brian Pietrosimone, Richard F Loeser, J Troy Blackburn, Darin A Padua, Matthew S Harkey, Laura E Stanley, Brittney A Luc-Harkey, Veronica Ulici, Stephen W Marshall, Joanne M Jordan, Jeffery T Spang
The purpose of our study was to determine the association between biomechanical outcomes of walking gait (peak vertical ground reaction force [vGRF], vGRF loading rate [vGRF-LR] and knee adduction moment [KAM]) six months following anterior cruciate ligament reconstruction (ACLR) and biochemical markers of serum type-II collagen turnover (collagen type-II cleavage product to collagen type-II C-propeptide [C2C:CPII]), plasma degenerative enzymes (matrix metalloproteinase-3 [MMP-3]), and a pro-inflammatory cytokine (interleukin-6 [IL-6])...
February 2, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28149655/osteoarthritis-toward-a-comprehensive-understanding-of-pathological-mechanism
#20
REVIEW
Di Chen, Jie Shen, Weiwei Zhao, Tingyu Wang, Lin Han, John L Hamilton, Hee-Jeong Im
Osteoarthritis (OA) is the most common degenerative joint disease and a major cause of pain and disability in adult individuals. The etiology of OA includes joint injury, obesity, aging, and heredity. However, the detailed molecular mechanisms of OA initiation and progression remain poorly understood and, currently, there are no interventions available to restore degraded cartilage or decelerate disease progression. The diathrodial joint is a complicated organ and its function is to bear weight, perform physical activity and exhibit a joint-specific range of motion during movement...
2017: Bone Research
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