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Juvenile Cartilage

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https://www.readbyqxmd.com/read/29323942/comparison-of-juvenile-allogenous-articular-cartilage-and-bone-marrow-aspirate-concentrate-versus-microfracture-with-and-without-bone-marrow-aspirate-concentrate-in-arthroscopic-treatment-of-talar-osteochondral-lesions
#1
Sydney C Karnovsky, Bridget DeSandis, Amgad M Haleem, Carolyn M Sofka, Martin O'Malley, Mark C Drakos
BACKGROUND: The purpose of this study was to compare the functional and radiographic outcomes of patients who received juvenile allogenic chondrocyte implantation with autologous bone marrow aspirate (JACI-BMAC) for treatment of talar osteochondral lesions with those of patients who underwent microfracture (MF). METHODS: A total of 30 patients who underwent MF and 20 who received DeNovo NT for JACI-BMAC treatment between 2006 and 2014 were included. Additionally, 17 MF patients received supplemental BMAC treatment...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29305041/arthroscopic-treatment-of-osteochondral-lesions-of-the-talus-using-juvenile-articular-cartilage-allograft-and-autologous-bone-marrow-aspirate-concentration
#2
Bridget A DeSandis, Amgad M Haleem, Carolyn M Sofka, Martin J O'Malley, Mark C Drakos
Juvenile allogenic chondrocyte implantation (JACI; DeNovo NT Natural Tissue Graft®; Zimmer, Warsaw, IN) with autologous bone marrow aspirate concentrate (BMAC) is a relatively new all-arthroscopic procedure for treating critical-size osteochondral lesions (OCLs) of the talus. Few studies have investigated the clinical and radiographic outcomes of this procedure. We collected the clinical and radiographic outcomes of patients who had undergone JACI-BMAC for talar OCLs to assess treatment efficacy and cartilage repair tissue quality using magnetic resonance imaging (MRI)...
January 2, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29249068/melatonin-as-an-alternative-sedation-method-during-magnetic-resonance-imaging-in-preschool-children-with-musculoskeletal-problems
#3
Agneza Marija Pasini, Josip Marjanović, Goran Roić, Nikola Dukarić, Ana Tripalo Batoš, Zoran Bahtijarević, Alenka Gagro
Magnetic resonance imaging (MRI) in preschool children is often challenging due to excessive motion artifacts. Sedation or general anesthesia (GA) is commonly used to prevent children from moving in the MRI scanner, with increased risk for cardiopulmonary complications and requirement for skilled personnel. Herein, we investigated whether oral melatonin, a natural hormone implicated in circadian rhythm regulation, could be used as an alternative sedation method prior to the MRI in preschool children with musculoskeletal problems...
December 16, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29202618/synovial-fluid-proteomics-in-the-pursuit-of-arthritis-mediators-an-evolving-field-of-novel-biomarker-discovery
#4
Shalini M Mahendran, Katerina Oikonomopoulou, Eleftherios P Diamandis, Vinod Chandran
Synovial fluid (SF) is a protein-rich fluid produced into the joint cavity by cells of the synovial membrane. Due to its direct contact with articular cartilage, surfaces of the bone, and the synoviocytes of the inner membrane, it provides a promising reflection of the biochemical state of the joint under varying physiological and pathophysiological conditions. This property of SF has been exploited within numerous studies in search of unique biomarkers of joint pathologies with the ultimate goal of developing minimally invasive clinical assays to detect and/or monitor disease states...
December 4, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29191939/effects-of-hypothalamic-leptin-gene-therapy-on-osteopetrosis-in-leptin-deficient-mice
#5
Kenneth A Philbrick, Stephen A Martin, Amy R Colagiovanni, Adam J Branscum, Russell T Turner, Urszula T Iwaniec
Impaired resorption of cartilage matrix deposited during endochondral ossification is a defining feature of juvenile osteopetrosis. Growing, leptin-deficient ob/ob mice exhibit a mild form of osteopetrosis. However, the extent to which the disease is (1) self-limiting and (2) reversible by leptin treatment is unknown. We addressed the first question by performing histomorphometric analysis of femurs in rapidly growing (2-month-old), slowly growing (4-month-old), and skeletally mature (6-month-old) wild type (WT) and ob/ob male mice...
November 30, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/29166409/post-weaning-high-fat-diet-results-in-growth-cartilage-lesions-in-young-male-rats
#6
Samuel S Haysom, Mark H Vickers, Lennex H Yu, Clare M Reynolds, Elwyn C Firth, Sue R McGlashan
To determine if a high-fat diet (HF) from weaning would result in a pro-inflammatory state and affect joint cartilage, we fed male rats either HF or Chow diet post-weaning, and voluntary wheel exercise (EX) or cage only activity (SED) after 9 weeks of age. At 17 weeks body composition, plasma biomarkers and histomorphology scores of femoro-tibial cartilages of HF-SED, HF-EX, Chow-SED and Chow-EX groups were compared. Food intake and activity were not significantly different between groups. HF diet resulted in significantly higher weight gain, %fat, fat:lean ratio, and plasma leptin, insulin and TNFα concentrations, with significant interactions between diet and exercise...
2017: PloS One
https://www.readbyqxmd.com/read/29156161/the-use-of-particulated-juvenile-allograft-cartilage-in-foot-and-ankle-surgery
#7
REVIEW
Alan Ng, Kaitlyn Bernhard
Particulated juvenile allograft cartilage (PJAC) has significant promise and is currently supported by several studies. Potential benefits of this new technique include single-stage procedure, simplicity in the surgical technique, implantation of juvenile tissue, and a lack of donor site morbidity. This article discusses the imaging, surgical options, and postoperative management of PJAC.
January 2018: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/29110501/first-metatarsal-head-osteochondral-defect-treatment-with-particulated-juvenile-cartilage-allograft-transplantation-a-case-series
#8
Bryan Van Dyke, Gregory C Berlet, Justin L Daigre, Christopher F Hyer, Terrence M Philbin
BACKGROUND: Focal damage to articular cartilage, also called an osteochondral defect (OCD), can be a cause of pain and decreased range of motion. Recent advancements have led to transplantation techniques using particulated juvenile articular cartilage allograft. This technique has been applied to the first metatarsal head to a very limited degree, with no published results to our knowledge. The aim of this study was to review the clinical results of patients who underwent particulated juvenile cartilage allograft implantation for first metatarsal head OCDs...
November 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29103840/the-influence-of-full-thickness-chondral-defects-on-outcomes-following-meniscal-allograft-transplantation-a-comparative-study
#9
Bryan M Saltzman, Maximilian A Meyer, Timothy S Leroux, Matthew E Gilelis, Margot Debot, Adam B Yanke, Brian J Cole
PURPOSE: To compare a series of patients who underwent meniscus allograft transplantation (MAT) with full-thickness chondral defects (FTD) with those with no chondral defect (ND) with regard to the following: change in patient-reported outcomes (PROs) from baseline to 2-year follow-up and baseline to the final follow-up (including comparisons to minimal clinically important differences), complications and complication rates, reoperations and reoperation rates/timing, and failures and time to failure (revision MAT or conversion to total knee arthroplasty)...
November 2, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29096706/human-ipsc-derived-chondrocytes-mimic-juvenile-chondrocyte-function-for-the-dual-advantage-of-increased-proliferation-and-resistance-to-il-1%C3%AE
#10
Jieun Lee, Piera Smeriglio, Constance R Chu, Nidhi Bhutani
BACKGROUND: Induced pluripotent stem cells (iPSC) provide an unlimited patient-specific cell source for regenerative medicine. Adult cells have had limited success in cartilage repair, but juvenile chondrocytes (from donors younger than 13 years of age) have been identified to generate superior cartilage. With this perspective, the aim of these studies was to compare the human iPSC-derived chondrocytes (hiChondrocytes) to adult and juvenile chondrocytes and identify common molecular factors that govern their function...
November 2, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29093250/-values-of-fat-saturation-sequence-in-mri-for-juvenile-arthritis
#11
Jiapei Wang, Ling Wu, Shiling Zhong, Hanchun Yu, Yazhen Di, Mengjiao Shen, Nan Sun
To explore the values of fat saturation sequence in MRI for juvenile arthritis.
 Methods: A total of 1 131 cases with juvenile arthritis and 1 601 with symptomatic arthritis were examined by MRI normal T1 weighted imaging (T1WI) and T2 weighted imaging (T2WI) sequence and spectral presaturation attenuatedinversion recovery (SPAIR) T2 fat saturation sequence. All the images were independently evaluated by two senior doctors from the Department of Radiology and the Department of Pediatric Rheumatology and Immunology respectively to confirm the types and degree of pathological changes of joint tissues...
October 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29040232/in-vitro-effect-of-vancomycin-on-the-viability-of-articular-chondrocytes
#12
K Aaron Shaw, Josef K Eichinger, Nischal Nadig, Stephen A Parada
OBJECTIVES: To characterize the in-vitro toxicity of vancomycin on articular cartilage. METHODS: Osteochondral samples extracted from fresh, juvenile porcine stifle (knee) joints were exposed to vancomycin-saline concentrations of 2, 5, and 10 mg/ml and compared to a saline and non-saline treated control. Comparison chondrocyte viability was assessed with histology examination of chondrocyte degeneration using the Mankin criteria and a live/dead staining using ethidium homodimer-2 and calcien acetoxymethylester (AM) stain and confocal laser scanning microscopy...
October 7, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29036754/patellofemoral-cartilage-restoration-indications-techniques-and-outcomes-of-autologous-chondrocytes-implantation-matrix-induced-chondrocyte-implantation-and-particulated-juvenile-allograft-cartilage
#13
https://www.readbyqxmd.com/read/28992420/improved-chondrotoxic-profile-of-liposomal-bupivacaine-compared-with-standard-bupivacaine-after-intra-articular-infiltration-in-a-porcine-model
#14
K Aaron Shaw, Colleen Moreland, Jeremy Jacobs, Justin M Hire, Richard Topolski, Nathan Hoyt, Stephen A Parada, Craig D Cameron
BACKGROUND: Increasingly, liposomal bupivacaine is being used with multimodal pain management strategies. In vitro investigations have shown decreased chondrotoxicity profiles for liposomal bupivacaine; however, there is no evidence regarding its in vivo effects. Hypothesis/Purpose: This study sought to investigate the in vivo chondrotoxicity of liposomal bupivacaine, hypothesizing that there would be increased chondrocyte viability after exposure to liposomal bupivacaine when compared with standard bupivacaine...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28986634/contrast-enhanced-mri-findings-of-the-knee-in-healthy-children-establishing-normal-values
#15
Robert Hemke, J Merlijn van den Berg, Charlotte M Nusman, E Charlotte van Gulik, Anouk M Barendregt, Dieneke Schonenberg-Meinema, Koert M Dolman, Taco W Kuijpers, Mario Maas
OBJECTIVES: To define normative standards for the knee in healthy children using contrast-enhanced MRI, focusing on normal synovial membrane thickness. Secondly, presence of joint fluid and bone marrow oedema was evaluated. METHODS: For this study, children without disorders potentially resulting in (accompanying) arthritis were included. Patients underwent clinical assessments, followed by contrast-enhanced MRI. MRI features were evaluated in consensus using the Juvenile Arthritis MRI Scoring (JAMRIS) system...
October 6, 2017: European Radiology
https://www.readbyqxmd.com/read/28979588/management-of-osteochondral-lesions-of-the-talar-dome
#16
Chamnanni Rungprai, Joshua N Tennant, Ryan D Gentry, Phinit Phisitkul
Osteochondral lesion of the talus (OLT) is a common condition associated with ankle injury that brings challenges in the diagnosis and treatment. Symptoms related to this condition are nonspecific including pain, swelling, stiffness, and mechanical symptoms of locking and catching. While the natural history of the OLTs is not well understood, surgical treatment is often required especially in chronic cases and acute cases with displaced articular fragments. Arthroscopic treatment of the OLTs aims to restore ankle joint function and pain relief by the removal of the chondral or osteochondral fragment, debridement and stabilization of cartilage rim and subchondral bone, and stimulate healing of the bone and damaged cartilage...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28853913/comparison-of-the-effects-of-osteochondral-autograft-transplantation-with-platelet-rich-plasma-or-platelet-rich-fibrin-on-osteochondral-defects-in-a-rabbit-model
#17
Masahiro Maruyama, Hiroshi Satake, Tomoto Suzuki, Ryusuke Honma, Yasushi Naganuma, Yuya Takakubo, Michiaki Takagi
BACKGROUND: Although osteochondral autograft transplantation (OAT) provides satisfactory outcomes for osteochondral defects, for large defects OAT is often inadequate because of graft availability. Osteochondral allograft transplantation is an alternative treatment for large defects, but this approach is limited by graft storage constraints and carries disease transmission risks. Platelet-rich fibrin (PRF) is a second-generation platelet concentrate, and its positive effect on articular cartilage has been reported...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28832200/use-of-particulated-juvenile-articular-cartilage-allograft-for-osteochondral-lesions-of-the-wrist
#18
Daniel E Hess, Brian C Werner, D Nicole Deal
BACKGROUND: Articular cartilage injuries are a common injury among young, active patients, and the most appropriate treatment for these injuries remains controversial. A promising new technology in the treatment of high-grade cartilage injuries is particulated juvenile articular cartilage (PJAC) allograft (DeNovo NT, Zimmer, Warsaw, Indiana). This has been shown to be successful in multiple joints including the knee, talus, and elbow. No studies or case reports exist in supporting or discouraging its use in injuries of the wrist, in specific, the scaphoid...
September 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28812679/meckel-s-cartilage-breakdown-offers-clues-to-mammalian-middle-ear-evolution
#19
Neal Anthwal, Daniel J Urban, Zhe-Xi Luo, Karen E Sears, Abigail S Tucker
A key transformation in mammalian ear evolution was incorporation of the primary jaw joint of premammalian synapsids into the definitive mammalian middle ear of living mammals. This evolutionary transition occurred in two steps, starting with a partial or 'transitional' mammalian middle ear in which the ectotympanic and malleus were still connected to the mandible by an ossified Meckel's cartilage (MC), as observed in many Mesozoic mammals. This was followed by MC breakdown, freeing the ectotympanic and the malleus from the mandible and creating the definitive mammalian middle ear...
March 6, 2017: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/28810995/chondrocyte-viability-after-a-simulated-blast-exposure
#20
K Aaron Shaw, Peter C Johnson, David Williams, Steven D Zumbrun, Richard Topolski, Craig D Cameron
OBJECTIVES: The effects of blast exposure have gained increasing interest in the military medical community with their continued occurrence on the battlefield. The impact of the direct and indirect energy imparted from blasts to hollow viscera, as well as closed head injuries, have been well studied. However, the injury to articular cartilage has not been investigated, despite previous correlations regarding the development of osteoarthritis. The purpose of this study was to assess the degree of injury to articular chondrocytes after exposure to a simulated blast overpressure wave...
July 2017: Military Medicine
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