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Juvenile Cartilage

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https://www.readbyqxmd.com/read/28224070/combined-particulated-juvenile-cartilage-allograft-transplantation-and-medial-patellofemoral-ligament-reconstruction-for-symptomatic-chondral-defects-in-the-setting-of-recurrent-patellar-instability
#1
Armin Arshi, Dean Wang, Kristofer J Jones
Successful management of patellar osteochondral lesions has proved difficult, with unreliable outcomes reported using traditional cartilage repair and restoration procedures. Unique considerations for this type of defect include the multiplanar contours of the articular surface of the patella, high compressive and shear forces with knee range of motion that may disrupt graft healing, and the potential need for concomitant surgery to address patellar malalignment and instability. We describe our preferred method for treatment of a symptomatic chondral defect in the setting of recurrent patellar instability using particulated juvenile articular cartilage allograft transplantation and medial patellofemoral ligament reconstruction with semitendinosus allograft...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28203388/on-the-development-of-the-chondrocranium-and-the-histological-anatomy-of-the-head-in-perinatal-stages-of-marsupial-mammals
#2
REVIEW
Marcelo R Sánchez-Villagra, Analía M Forasiepi
An overview of the literature on the chondrocranium of marsupial mammals reveals a relative conservatism in shape and structures. We document the histological cranial anatomy of individuals representing Monodelphis domestica, Dromiciops gliroides, Perameles sp. and Macropus eugenii. The marsupial chondrocranium is generally characterized by the great breadth of the lamina basalis, absence of pila metoptica and large otic capsules. Its most anterior portion (cupula nasi anterior) is robust, and anterior to it there are well-developed tactile sensory structures, functionally important in the neonate...
2017: Zoological Letters
https://www.readbyqxmd.com/read/28176372/development-of-the-skull-and-pectoral-girdle-in-siberian-sturgeon-acipenser-baerii-and-russian-sturgeon-acipenser-gueldenstaedtii-acipenseriformes-acipenseridae
#3
Peter Warth, Eric J Hilton, Benjamin Naumann, Lennart Olsson, Peter Konstantinidis
The head is considered the major novelty of the vertebrates and directly linked to their evolutionary success. Its form and development as well as its function, for example in feeding, is of major interest for evolutionary biologists. In this study, we describe the skeletal development of the cranium and pectoral girdle in Siberian (Acipenser baerii) and Russian sturgeon (A. gueldenstaedtii), two species that are commonly farmed in aquaculture and increasingly important in developmental studies. This study comprises the development of the neuro-, viscero- and dermatocranium and the dermal and chondral components of the pectoral girdle, from first condensation of chondrocytes in prehatchlings to the early juvenile stage and reveals a clear pattern in formation...
February 7, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28124205/development-of-short-snouted-seahorse-hippocampus-hippocampus-l-1758-osteological-and-morphological-aspects
#4
B Novelli, F Otero-Ferrer, J A Socorro, M J Caballero, A Segade-Botella, L Molina Domínguez
Information about early development after male release lags behind studies of juveniles and adult seahorses, and newborn seahorses, similar in shape to adults, are considered juveniles or fry. During early life, Hippocampus hippocampus present behavioural (shift in habitat, from planktonic to benthic) and morphological changes; for this reasons, the aims of this study are to define the stage of development of H. hippocampus after they are expelled from the male brood pouch and to establish direct or indirect development through an osteological analysis...
January 25, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28086918/atypical-monoarthritis-presentation-in-children-with-oligoarticular-juvenile-idiopathic-arthritis-a-case-series
#5
Natasha Lepore, Megan Cashin, Debra Bartley, Daniela Simona Ardelean
BACKGROUND: Oligoarticular juvenile idiopathic arthritis (oligoJIA), the most common chronic inflammatory arthritis of childhood, usually involves the knees and ankles. Severe oligoJIA monoarthritis presenting in a joint other than knees and ankles, is rare. FINDINGS: We report four children who presented with severe isolated arthritis of the hip, wrist or elbow and were diagnosed with oligoJIA. All four were girls with a median age of 11.5 years. Those with hip arthritis also met the classification criteria for juvenile-onset spondylarthopathy...
January 13, 2017: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/28080920/phaeohyphomycosis-associated-with-ossification-of-the-skull-and-cervical-vertebrae-in-a-swell-shark-cephaloscyllium-ventriosum
#6
Claire D Erlacher-Reid, Hendrik H Nollens, Todd L Schmitt, Judy St Leger, Sarena Sunico
A female, captive bred, juvenile swell shark ( Cephaloscyllium ventriosum ) was observed swimming in tight circles and rolling. Radiographs and computed tomography of this individual revealed extensive cartilage mineralization of the skull and cranial cervical vertebrae compared with diagnostic images of clinically healthy conspecifics. Gross necropsy and histopathologic examination revealed ossification and fibrosis of the cartilaginous matrix of the skull and cervical vertebrae with deep invasion by a pigmented hyphal fungus...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28033680/calcification-of-the-lower-respiratory-tract-in-relation-to-flight-development-in-jamaican-fruit-bats-phyllostomidae-artibeus-jamaicensis
#7
Richard T Carter
The production of echolocation calls in bats along with forces produced by contraction of thoracic musculature used in flight presumably puts relatively high mechanical loads on the lower respiratory tract (LRT). Thus, there are likely adaptations to prevent collapse or distortion of the bronchial tree and trachea during flight in echolocating bats. By clearing and staining (Alcian blue and Alizarin red) LRTs removed from nonvolant neonates, semivolant juveniles, volant subadults, and adult Jamaican fruit bats (Artibeus jamaicensis), I found that calcification of the tracheal, primary bronchial, and secondary bronchial (lobar) cartilage rings occurs over the span of about 3 days and coincides with later developmental stages of flight and the increased production of echolocation calls...
December 29, 2016: Journal of Anatomy
https://www.readbyqxmd.com/read/27994721/particulated-juvenile-articular-cartilage-allograft-transplantation-for-osteochondral-talar-lesions
#8
Bryan M Saltzman, Johnny Lin, Simon Lee
OBJECTIVE: To report on our institution's early results from juvenile particulate cartilage allograft transplantation of the talus. DESIGN: Because of the relative rarity of the procedure at the talus, it was decided to provide a comprehensive understanding of the currently available evidence via a 2-part study with (1) a systematic review of the literature and (2) a retrospective single-center cohort study of the authors' patients, their demographics, and their early outcomes...
January 2017: Cartilage
https://www.readbyqxmd.com/read/27989341/juvenile-particulate-osteochondral-allograft-for-treatment-of-osteochondral-lesions-of-the-talus-detection-of-altered-repair-tissue-biochemical-composition-using-7-tesla-mri-and-t2-mapping
#9
Shaleen Vira, Austin J Ramme, Cary Chapman, Ding Xia, Ravinder R Regatte, Gregory Chang
During the previous 2 decades, numerous surgical procedures have become available to treat osteochondral lesions of the talus. The objective of the present study was to use 7 Tesla (7T) magnetic resonance imaging (MRI) to quantify and compare T2 values (a marker of collagen architecture) of native tibiotalar cartilage and cartilage repair tissue in patients treated with a juvenile particulate allograft for osteochondral lesions of the talus. The institutional review board approved the present study, and all subjects provided written informed consent...
January 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27965322/superficial-cells-are-self-renewing-chondrocyte-progenitors-which-form-the-articular-cartilage-in-juvenile-mice
#10
Lei Li, Phillip T Newton, Thibault Bouderlique, Marie Sejnohova, Tomas Zikmund, Elena Kozhemyakina, Meng Xie, Jan Krivanek, Jozef Kaiser, Hong Qian, Vyacheslav Dyachuk, Andrew B Lassar, Matthew L Warman, Björn Barenius, Igor Adameyko, Andrei S Chagin
Articular cartilage has little regenerative capacity. Recently, genetic lineage tracing experiments have revealed chondrocyte progenitors at the articular surface. We further characterized these progenitors by using in vivo genetic approaches. Histone H2B-green fluorescent protein retention revealed that superficial cells divide more slowly than underlying articular chondrocytes. Clonal genetic tracing combined with immunohistochemistry revealed that superficial cells renew their number by symmetric division, express mesenchymal stem cell markers, and generate chondrocytes via both asymmetric and symmetric differentiation...
December 13, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27955675/cd24-enrichment-protects-while-its-loss-increases-susceptibility-of-juvenile-chondrocytes-towards-inflammation
#11
Jieun Lee, Piera Smeriglio, Jason Dragoo, William J Maloney, Nidhi Bhutani
BACKGROUND: Diseases associated with human cartilage, including rheumatoid arthritis (RA) and osteoarthritis (OA) have manifested age, mechanical stresses and inflammation as the leading risk factors. Although inflammatory processes are known to be upregulated upon aging, we sought to gain a molecular understanding of how aging affects the tissue-specific response to inflammation. In this report, we explored the role of cluster of differentiation 24 (CD24) in regulating differential inflammatory responses in juvenile and adult human chondrocytes...
December 12, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27921292/cranial-joint-histology-in-the-mallard-duck-anas-platyrhynchos-new-insights-on-avian-cranial-kinesis
#12
Alida M Bailleul, Lawrence M Witmer, Casey M Holliday
The evolution of avian cranial kinesis is a phenomenon in part responsible for the remarkable diversity of avian feeding adaptations observable today. Although osteological, developmental and behavioral features of the feeding system are frequently studied, comparatively little is known about cranial joint skeletal tissue composition and morphology from a microscopic perspective. These data are key to understanding the developmental, biomechanical and evolutionary underpinnings of kinesis. Therefore, here we investigated joint microstructure in juvenile and adult mallard ducks (Anas platyrhynchos; Anseriformes)...
December 6, 2016: Journal of Anatomy
https://www.readbyqxmd.com/read/27919119/-osteochondritis-dissecans-of-the-talus-a-critical-review
#13
J Bruns, C R Habermann, J P Petersen
The etiology remains unclear. Mechanical factors seem to play an important role. Most histologies report clefts between the cartilage and bone and necrotic areas. Several classifications have been published based on observations from imaging techniques or on intraoperative findings. Clinical symptoms are unspecific. Imaging techniques are of great importance: X-rays of the ankle joint enable a quick diagnostic overview. MRT is the imaging-technique of choice for diagnosing OCDT-lesions. Regarding treatment, a tremendous number of retrospective publications exist...
April 2016: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/27903929/a-comparison-of-outcomes-of-particulated-juvenile-articular-cartilage-and-bone-marrow-aspirate-concentrate-for-articular-cartilage-lesions-of-the-talus
#14
Nathan S Lanham, John J Carroll, Minton T Cooper, Venkat Perumal, Joseph S Park
Background Articular cartilage lesions of the talus remain a challenging clinical problem because of the lack of natural regeneration and limited treatment options. Microfracture is often the first-line therapy, however lesions larger than 1.5 cm(2) have been shown to not do as well with this treatment method. Methods The objective of this retrospective study was to evaluate the outcomes of iliac crest bone marrow aspirate concentrate/collagen scaffold (ICBMA) and particulated juvenile articular cartilage (PJAC) for larger articular cartilage lesions of the talus...
November 30, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27900348/implementation-of-musculoskeletal-ultrasonography-in-detection-of-early-juvenile-idiopathic-arthritis
#15
Ayman F Darwish, Faten M Ismael, Abdou Ell-Laban, Ahmed Hamed, Moustafa Abdel Kader, Ashraf Osman
AIM: To determine whether early clinical, laboratory and musculoskeletal ultrasound (MSUS) characteristics can be used as early detectors of juvenile idiopathic arthritis. PATIENTS AND METHODS: Forty (40) patients with juvenile idiopathic arthritis (JIA) diagnosed according to the ILAR criteria [1] and 20 healthy control children. All patients were subjected to the following assessment at base line and at follow up after 6 months: Clinical evaluation, MSUS examination and laboratory evaluation...
2016: European Journal of Radiology Open
https://www.readbyqxmd.com/read/27742016/imaging-of-inflammatory-arthritis-in-children-status-and-perspectives-on-the-use-of-ultrasound-radiographs-and-magnetic-resonance-imaging
#16
Nancy A Chauvin, Asef Khwaja
The hallmark of juvenile idiopathic arthritis is synovial inflammation, and the goal of treatment is to suppress inflammation to prevent cartilage damage and bone erosions. Ultrasound and MRI are widely used imaging modalities in evaluating disease burden and response to treatments and are superior to clinical examination alone. However, differentiating between the normal appearance of the developing skeleton and pathologic conditions can be difficult, particularly in early disease. Larger, long-term studies are needed to standardize imaging definitions and protocols and to fully understand the clinical implications of imaging findings...
November 2016: Rheumatic Diseases Clinics of North America
https://www.readbyqxmd.com/read/27713578/a-rare-cause-of-chronic-elbow-pain-in-an-adolescent-baseball-player-a-case-report
#17
David Wasylynko
OBJECTIVE: To present a case of chronic elbow pain as a result of a hidden underlying osteochondral defect. CLINICAL FEATURES: A 17-year old baseball player presented with chronic lateral elbow pain. Examination revealed swelling of the elbow with signs of possible ligament, muscle, and tendon injury. DIAGNOSIS AND TREATMENT: Although there was apparent soft-tissue injury, the elbow swelling created immediate suspicion of a more serious underlying condition...
September 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/27709060/arthroscopic-juvenile-allograft-cartilage-implantation-for-cartilage-lesions-of-the-hip
#18
Cecilia Pascual-Garrido, Jiandong Hao, John Schrock, Omer Mei-Dan, Jorge Chahla
Cartilage lesions in the hip are of high prevalence. Most of these lesions are treated with microfracture. Microfracture has relatively good subjective outcomes for smaller lesions; however, it is limited by the ability to reproduce hyaline cartilage, especially in older patients. For larger chondral defects, we present a technique using juvenile allograft cartilage implantation implanted arthroscopically to treat cartilage lesions in the hip. The purpose of this technical note is to describe the arthroscopic technique for treating chondral lesions in the hip with allograft juvenile cartilage...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27679727/imaging-of-juvenile-idiopathic-arthritis-part-ii-ultrasonography-and-mri
#19
REVIEW
Iwona Sudoł-Szopińska, Elżbieta Grochowska, Piotr Gietka, Mateusz Płaza, Grzegorz Pracoń, Fadhil Saied, Marta Walentowska-Janowicz
Juvenile idiopathic arthritis is the most common autoimmune systemic disease of the connective tissue affecting individuals in the developmental age. Radiography, which was described in the first part of this publication, is the standard modality in the assessment of this condition. Ultrasound and magnetic resonance imaging enable early detection of the disease which affects soft tissues, as well as bones. Ultrasound assessment involves: joint cavities, tendon sheaths and bursae for the presence of synovitis, intraand extraarticular fat tissue to visualize signs of inflammation, hyaline cartilage, cartilaginous epiphysis and subchondral bone to detect cysts and erosions, and ligaments, tendons and their entheses for signs of enthesopathies and tendinopathies...
September 2016: Journal of Ultrasonography
https://www.readbyqxmd.com/read/27679726/imaging-of-juvenile-idiopathic-arthritis-part-i-clinical-classifications-and-radiographs
#20
REVIEW
Iwona Sudoł-Szopińska, Genowefa Matuszewska, Piotr Gietka, Mateusz Płaza, Marta Walentowska-Janowicz
Juvenile idiopathic arthritis is the most common autoimmune systemic disease of the connective tissue affecting individuals at the developmental age. Radiography is the primary modality employed in the diagnostic imaging in order to identify changes typical of this disease entity and rule out other bone-related pathologies, such as neoplasms, posttraumatic changes, developmental defects and other forms of arthritis. The standard procedure involves the performance of comparative joint radiographs in two planes...
September 2016: Journal of Ultrasonography
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