A curved returning limb in an oblique field
An elongated capillary with a curved limb, among finer hairpin loops with rounded apices.

Image details
- Pattern
- Tortuous capillaries
- Author or contributor
- Borja Gracia Tello
- Hallmarks
- Tortuous capillariesSimple hairpin loops
- Magnification
- 211.9×
- Device
- Dino-Lite Edge
- Field of view (W × H)
- ≈ 1.85 × 1.48 mm
Teaching point
Precise measurement depends on correct calibration and focus.
Measurements and calibration
For the subset of apices with stable automated measurements, estimated widths span approximately 12–25 µm. These are automated estimates, not manually validated measurements.
Clinical caveat
This image illustrates a visual finding and should be interpreted with acquisition quality, distribution across fingers, clinical context, and serology when relevant.
Use and licensing
Third-party image. Refer to the credits and any image-specific terms of use.
- Creator
- Borja Gracia Tello
Suggested attribution
A curved returning limb in an oblique field — Borja Gracia Tello, via Capillaroscopy.com. CC BY 4.0. Source: https://capillaroscopy.com/en/library/gracia-tello-tortuous-011/ Licence: https://creativecommons.org/licenses/by/4.0/
If you modify the image, describe your changes and retain any existing modification notices. This licence does not imply endorsement or clear other rights.
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