A doubled-back apex among simple hairpins
A folded capillary apex left of center, beside taller simple hairpin loops.

Image details
- Pattern
- Tortuous capillaries
- Author or contributor
- Borja Gracia Tello
- Hallmarks
- Tortuous capillariesSimple hairpin loops
- Magnification
- 250×
- Device
- Smart G-Scope
- Field of view (W × H)
- ≈ 2.34 × 1.32 mm
Teaching point
One isolated abnormal shape may be nonspecific.
Measurements and calibration
For the subset of apices with stable automated measurements, estimated widths span approximately 12–30 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 doubled-back apex among simple hairpins — Borja Gracia Tello, via Capillaroscopy.com. CC BY 4.0. Source: https://capillaroscopy.com/en/library/gracia-tello-tortuous-002/ 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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