Talonavicular coverage angle
Citation, DOI, disclosures and article data
Citation:
Knipe H, Talonavicular coverage angle. Reference article, Radiopaedia.org (Accessed on 23 Feb 2025) https://doi.org/10.53347/rID-71585
Permalink:
rID:
71585
Article created:
Disclosures:
At the time the article was created Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosures
Revisions:
3 times, by
1 contributor -
see full revision history and disclosures
Systems:
Synonyms:
- Talonavicular coverage angle (TNCA)
The talonavicular coverage angle reflects the degree of, if any, talar uncoverage, which is important in the surgical work-up of flatfoot disease 3.
Measurement
On DP weight-bearing foot radiographs, it is the mediale angle between 1-3:
- talar head articular surface
- proximal navicular articular surface
Interpretation
Interpreting the talonavicular coverage angle 1:
- normal: <7°
- adult acquired flatfoot disease: >7°
References
- 1. Flores D, Mejía Gómez C, Fernández Hernando M, Davis M, Pathria M. Adult Acquired Flatfoot Deformity: Anatomy, Biomechanics, Staging, and Imaging Findings. Radiographics. 2019;39(5):1437-60. doi:10.1148/rg.2019190046 - Pubmed
- 2. Andrew Robinson, James W. Brodsky, John P. Negrine. Core Topics in Foot and Ankle Surgery. (2018) ISBN: 9781108311458 - Google Books
- 3. Lau B, Allahabadi S, Palanca A, Oji D. Understanding Radiographic Measurements Used in Foot and Ankle Surgery. J Am Acad Orthop Surg. 2021;30(2):e139-54. doi:10.5435/jaaos-d-20-00189 - Pubmed
Incoming Links
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