LaPlace's law
Last revised by Henry Knipe on 27 Jul 2022
Citation, DOI, disclosures and article data
Citation:
Morgan M, Knipe H, LaPlace's law. Reference article, Radiopaedia.org (Accessed on 29 Mar 2024) https://doi.org/10.53347/rID-50501
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rID:
50501
Article created:
8 Jan 2017,
Matt A. Morgan ◉
Disclosures:
At the time the article was created Matt A. Morgan had no recorded disclosures.
View Matt A. Morgan's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Henry Knipe had the following disclosures:
- Radiopaedia Events Pty Ltd, Speaker fees (past)
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.
View Henry Knipe's current disclosures
Revisions:
2 times, by
2 contributors -
see full revision history and disclosures
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Synonyms:
- Laplace's law
- LaPlace law
LaPlace's law is useful in thinking about dilated tubular structures, such as the bowel or vessels (e.g. aortic aneurysms). The relationship between wall tension and radius shows why more dilated regions of a tube develop more wall stress and therefore are at higher risk for perforation:
- wall tension = intraluminal pressure × radius
Quiz questions
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References
- 1. Slam KD, Calkins S, Cason FD. LaPlace's law revisited: cecal perforation as an unusual presentation of pancreatic carcinoma. World journal of surgical oncology. 5: 14. doi:10.1186/1477-7819-5-14 - Pubmed
- 2. Beller CJ, Gebhard MM, Karck M, Labrosse MR. Usefulness and limitations of computational models in aortic disease risk stratification. Journal of vascular surgery. 52 (6): 1572-9. doi:10.1016/j.jvs.2010.05.117 - Pubmed
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