Nailbed Capillaroscopy
Nailbed Capillaroscopy - Related Videos
05:06
Non-Invasive Visualization of Nailbed Microvascular Morphology in Mice Using Capillaroscopy
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2025
Capillaroscopy is an accessible tool for direct, inexpensive, and non-invasive visualization of microvasculature. The goal of this protocol is to enable researchers to use capillaroscopy for the visualization of peripheral microvascular morphology in the nailbeds of mice.
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A Reproducible Computerized Method for Quantitation of Capillary Density using Nailfold Capillaroscopy
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Cited by 17 •
2015
Capillaroscopy is a non-invasive, efficient, relatively inexpensive and easy-to-learn methodology for directly visualizing capillaries in the microcirculation. However, only one publication to date describes the reliability of a complex software program available for quantitating capillaroscopy data. Here, we present a simple, reliable protocol for quantitating capillaries using a standardized algorithm.
05:18
Palpation
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2023
Source: Jaideep S. Talwalkar, MD, Internal Medicine and Pediatrics, Yale School of Medicine, New Haven, CT The physical examination requires the use of all of the provider's senses to gain information about the patient. The sense of touch is utilized to obtain diagnostic information through palpation. The specific parts of the examiner's hand used for palpation differ based on the body part being examined. Because of their dense sensory innervation, the finger pads are useful for fine...
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The transparent nailfold allows light and magnification to reveal capillary loops without removing tissue. A microscope or videocapillaroscope enlarges this region sufficiently to examine loop shape, density, and arrangement while blood moves through the vessels. This combination links visible microvascular structure with ongoing circulation, making peripheral vascular changes accessible for biological investigation.
Capillary loop shape, density, and arrangement provide complementary structural indicators rather than a single measurement. Shape describes the form of individual loops, density reflects how many are present, and arrangement shows their spatial organization. Examining these features together helps characterize microvascular patterns and identify changes associated with circulatory disorders or connective tissue disease.
Blood-flow observation adds a functional dimension to the structural assessment. Because capillaroscopy can show circulation in real time, investigators can compare the appearance of vessels with how blood is moving through them. This is useful when studying microvascular health, disease-related changes, or responses to treatment, where structure alone may not capture ongoing vascular behavior.
An examination uses an imaging device capable of magnifying the transparent skin beneath a fingernail. Researchers may use a microscope or videocapillaroscope to view the nailfold, then assess capillary-loop shape, density, arrangement, and blood flow. The method is noninvasive, allowing the same peripheral site to support observational studies and repeated biological assessments.
When studying Raynaud phenomenon, connective tissue diseases, or other circulatory disorders, investigators can use nailbed capillaroscopy to examine associated microvascular changes. The observations provide a noninvasive view of peripheral circulation that supports disease-focused investigation. Its direct assessment of small vessels also helps characterize differences in microvascular health across relevant biological conditions.
In biology, the technique supports questions about how peripheral microvessels change over time and how those changes relate to disease progression. Repeated noninvasive observations can also examine treatment response, providing longitudinal information rather than relying on a single time point. This connects vascular structure, blood flow, and changing microvascular status during ongoing research.