Is the capillary microscopic determination of the visible capillary length a diagnostic criterion in thromboangiitis obliterans?
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Updated: Oct 29, 2026
Non-invasive Assessment of Microvascular and Endothelial Function
Published on: January 29, 2013
C Fahrig1, H Heidrich, C Penninger
1Department of Internal Medicine, Franziskus Hospital, Berlin, Germany.
Background:
The diagnosis of thromboangiitis obliterans may be difficult to establish in the everyday clinical setting.
Patients And Methods:
In 16 patients with thromboangiitis obliterans vital capillary microscopy was carried out on the nailfold on all ten digits. The longest visible capillary length was noted. As controls we employed 86 healthy subjects.
Results:
The measurement of the respective longest visible capillary on the nailfold revealed a visible capillary length of more than 0.6 mm in 38% of all patients with thromboangiitis obliterans (n = 16), such capillary lengths were not to be found among healthy subjects (n = 86).
Conclusions:
Vital capillary microscopic determination of the visible capillary length is a simple-to-perform, non-invasive examination, which can help to establish the diagnosis.
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