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. 2020 Feb 13;5(1):2473011419896763. doi: 10.1177/2473011419896763

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© The Author(s) 2020

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — The Silverskiold test is used to assess for gastrocnemius equinus. The maximum passive ankle dorsiflexion is compared with the knee (A) extended to (B) flexed. The difference between dorsiflexion in these 2 positions is the contribution of the gastrocnemius to the equinus contracture because the gastrocnemius crosses both the ankle and the knee joints whereas the other plantarflexors of the ankle do not. Dorsiflexion of less than 10 degrees with the knee extended or a difference of greater than 10 degrees confirms the presence of gastrocnemius equinus contracture.