scholarly journals Overuse-related instability of the elbow: the role of CT-arthrography

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Andrea Zagarella ◽  
Giulia Signorelli ◽  
Giulia Muscogiuri ◽  
Roberta Colombo ◽  
Gianluca Folco ◽  
...  
Keyword(s):  
Elbow Instability ◽  
Ct Arthrography ◽  
Anatomical Structures ◽  
Regional Anatomy ◽  
Dynamic Constraints ◽  
Accurate Knowledge ◽  
Elbow Injuries ◽  
Precise Diagnosis ◽  
Complex Joint

AbstractThe elbow is a complex joint whose biomechanical function is granted by the interplay and synergy of various anatomical structures. Articular stability is achieved by both static and dynamic constraints, which consist of osseous as well as soft-tissue components. Injuries determining instability frequently involve several of these structures. Therefore, accurate knowledge of regional anatomy and imaging findings is fundamental for a precise diagnosis and an appropriate clinical management of elbow instability. This review focuses particularly on the varied appearance of overuse-related elbow injuries at CT-arthrography.

scholarly journals Oral–Gut Microbiome Axis in Gastrointestinal Disease and Cancer

Cancers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 2124
Author(s):  
Se-Young Park ◽  
Byeong-Oh Hwang ◽  
Mihwa Lim ◽  
Seung-Ho Ok ◽  
Sun-Kyoung Lee ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Gut Microbiome ◽  
Gastrointestinal Disease ◽  
Oral Microbiota ◽  
Microbial Interaction ◽  
Barrier Dysfunction ◽  
Gut Barrier ◽  
Microbial Ecosystem ◽  
Precise Diagnosis

It is well-known that microbiota dysbiosis is closely associated with numerous diseases in the human body. The oral cavity and gut are the two largest microbial habitats, playing a major role in microbiome-associated diseases. Even though the oral cavity and gut are continuous regions connected through the gastrointestinal tract, the oral and gut microbiome profiles are well-segregated due to the oral–gut barrier. However, the oral microbiota can translocate to the intestinal mucosa in conditions of the oral–gut barrier dysfunction. Inversely, the gut-to-oral microbial transmission occurs as well in inter- and intrapersonal manners. Recently, it has been reported that oral and gut microbiomes interdependently regulate physiological functions and pathological processes. Oral-to-gut and gut-to-oral microbial transmissions can shape and/or reshape the microbial ecosystem in both habitats, eventually modulating pathogenesis of disease. However, the oral–gut microbial interaction in pathogenesis has been underappreciated to date. Here, we will highlight the oral–gut microbiome crosstalk and its implications in the pathogenesis of the gastrointestinal disease and cancer. Better understanding the role of the oral–gut microbiome axis in pathogenesis will be advantageous for precise diagnosis/prognosis and effective treatment.

The Role of Total Elbow Arthroplasty in the Setting of Elbow Instability

2016 ◽  
pp. 217-227
Author(s):  
Ana Mata-Fink ◽  
David Kovacevic ◽  
Theodore A. Blaine
Keyword(s):  
Total Elbow Arthroplasty ◽  
Elbow Instability ◽  
Elbow Arthroplasty

scholarly journals Imaging of larynx: Diagnostic value of computed tomography and magnetic resonance imaging

2009 ◽  
Vol 56 (3) ◽  
pp. 39-44
Author(s):  
R.M. Maksimovic ◽  
B.A. Banko ◽  
J.P. Milovanovic
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Regional Lymph Node ◽  
Diagnostic Value ◽  
Resonance Imaging ◽  
Precise Diagnosis ◽  
Node Metastases ◽  
Magnetic Resonance Imaging Mri

Computed tomography (CT) and magnetic resonance imaging (MRI) are enabling more precise diagnosis and treatment planning in patients with diseases of the larynx. The aim of this article is to describe the role of these methods in assessment of the laringeal diseases and key local anatomic characteristics important for spread of the disease. CT and MRI have a valuable contribution to the staging of the tumors due to the possibility to show the relationship to the ventricular complex, involvement of the subumucosal spaces, defining craniocaudal and anterposterior extension, laringeal cartilage invasion, as well as regional lymph node metastases.

scholarly journals OVERVIEW ON ASSOCIATION OF DIFFERENT TYPES OF LEUKEMIAS WITH RADIATION EXPOSURE

2015 ◽  
Vol 37 (2) ◽  
pp. 89-93 ◽  
Author(s):  
D F Gluzman ◽  
L M Sklyarenko ◽  
M Zavelevich ◽  
S V Koval ◽  
T Ivanivskaya ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Hematological Malignancies ◽  
Causative Factor ◽  
World Health ◽  
Lymphoid Tissues ◽  
Different Types ◽  
Large Populations ◽  
Precise Diagnosis ◽  
Health Organization

Exposure to ionizing radiation is associated with increasing risk of various types of hematological malignancies. The results of major studies on association of leukemias and radiation exposure of large populations in Japan and in Ukraine are analyzed. The patterns of different types of leukemia in 295 Chernobyl clean-up workers diagnosed according to the criteria of up-to-date World Health Organization classification within 10–25 years following Chernobyl catastrophe are summarized. In fact, a broad spectrum of radiation-related hematological malignancies has been revealed both in Life Span Study in Japan and in study of Chernobyl clean-up workers in Ukraine. The importance of the precise diagnosis of tumors of hematopoietic and lymphoid tissues according to up-to-date classifications for elucidating the role of radiation as a causative factor of leukemias is emphasized. Such studies are of high importance since according to the recent findings, radiation-associated excess risks of several types of leukemias seem to persist throughout the follow-up period up to 55 years after the radiation exposure.

Uncommon observation of bifocal giant subchondral cysts in the hip: diagnostic role of CT arthrography and MRI, with pathological correlation

2017 ◽  
Vol 47 (4) ◽  
pp. 587-592
Author(s):  
Pauline Gonzalez-Espino ◽  
Maïté Van Cauter ◽  
Louis Gossing ◽  
Christine C. Galant ◽  
Souad Acid ◽  
...  
Keyword(s):  
Ct Arthrography ◽  
Pathological Correlation ◽  
Diagnostic Role

Vibration Suppression in a Tension-Aligned Structure Through Sequential Application and Removal of Constraints

2012 ◽  
Author(s):  
Tingli Cai ◽  
Ranjan Mukherjee ◽  
Alejandro R. Diaz
Keyword(s):  
Vibration Control ◽  
High Frequency ◽  
Vibration Suppression ◽  
Primary Role ◽  
Accurate Knowledge ◽  
Array Structure ◽  
System States ◽  
Aligned Array ◽  
Control Methodology

We present an efficient method for vibration suppression in a tension-aligned array structure using constraint actuators. The primary role of constraint actuators is to cyclically apply and remove constraints such that vibration energy is efficiently funneled into high-frequency modes of the structure, where it can be dissipated quickly and naturally due to high rates of damping. A cycle of constraint application and removal can never add energy and hence the method can potentially achieve vibration control without accurate knowledge of the system states. The vibration control methodology is applied to a tension-aligned array structure supported by a structure in compression. Our approach for vibration suppression has the potential to positively influence the development of tension-aligned architectures which are contemplated for large precision apertures in space.

scholarly journals The role of hyoid muscles in biotremor production in Chamaeleo calyptratus

2020 ◽  
Vol 223 (22) ◽  
pp. jeb227603
Author(s):  
Samuel M. Tegge ◽  
Christopher V. Anderson ◽  
Michael E. Smith ◽  
Steve Huskey
Keyword(s):  
Body Temperature ◽  
Muscle Activation ◽  
Mixed Effect ◽  
Anatomical Structures ◽  
Levator Scapulae ◽  
Effect Regression ◽  
Activation Data ◽  
Chamaeleo Calyptratus ◽  
Mixed Effect Regression Model

ABSTRACTThe production of biotremors has been described in veiled chameleons (Chamaeleo calyptratus), but the mechanism by which they are produced is unknown. We gathered muscle activation data via electromyography (EMG), with simultaneous recordings of biotremors using an accelerometer, to test for the role of hyoid muscles in biotremor production. We recorded a mean biotremor frequency of 150.87 Hz for females and 136.01 Hz for males. The durations of activity and the latencies to onset and offset for the M. sternohyoideus profundus (SP), M. sternohyoideus superficialis (SS), Mm. mandibulohyoideus (MH) and M. levator scapulae (LS) were all significantly correlated with biotremor durations and biotremor onset and offset, respectively. Linear mixed-effect regression model comparisons of biotremor duration indicated that models containing either the MH and/or the SP and LS account for the most variation in biotremor duration. Twitch times for the SP (100 ms) and the SS (132 ms) at field active body temperature, however, were individually too slow to produce the biotremors at the observed frequency without alteration after production by other anatomical structures. These results implicate the SP, SS, MH and LS in the production of biotremors, but the exact mechanism of production requires further study.

scholarly journals The Role of Developmental Integration and Historical Contingency in the Origin and Evolution of Cypriniform Trophic Novelties

2019 ◽  
Vol 59 (2) ◽  
pp. 473-488 ◽  
Author(s):  
L P Hernandez ◽  
K E Cohen
Keyword(s):  
Case Studies ◽  
Integrated System ◽  
Historical Contingency ◽  
Anatomical Structures ◽  
Origin And Evolution ◽  
Pharyngeal Jaws ◽  
Morphological Novelties ◽  
Pharyngeal Musculature ◽  
Lineage Diversification

Abstract While functional morphologists have long studied the evolution of anatomical structures, the origin of morphological novelties has received less attention. When such novelties first originate they must become incorporated into an integrated system to be rendered fully functional. Thus, developmental integration is key at the origin of morphological novelties. However, given enough evolutionary time such integration may be broken, allowing for a division of labor that is facilitated by subsequent decoupling of structures. Cypriniformes represent a diverse group of freshwater fishes characterized by several trophic novelties that include: kinethmoid-mediated premaxillary protrusion, a muscular palatal and post-lingual organ, hypertrophied lower pharyngeal jaws that masticate against the base of the neurocranium, novel pharyngeal musculature controlling movement of the hypertrophied lower pharyngeal jaws, and in a few species an incredibly complex epibranchial organ used to aggregate filtered phytoplankton. Here, we use the wealth of such trophic novelties in different cypriniform fishes to present case studies in which developmental integration allowed for the origin of morphological innovations. As proposed in case studies 1 and 2 trophic innovations may be associated with both morphological and lineage diversification. Alternatively, case studies 3 and 4 represent a situation where ecological niche was expanded but with no concomitant increase in species diversity.

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