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. 2020 Oct 20;8(10):2325967120962869. doi: 10.1177/2325967120962869

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© The Author(s) 2020

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (https://creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, 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. — Modifications to common maneuvers for a virtual knee examination. (A) The lever test for anterior cruciate ligament integrity. A soup can is placed beneath the calf, and the distal femur is pushed downward with both hands. A positive test result is an objective and visual finding in which the patient’s heel does not rise off of the table. (B) The bounce test with a soup can placed beneath the heel. The patient is asked to slightly bend the knee and then allow it to bounce down so that it is completely straight, repeating this several times quickly. (C) Patellar apprehension test with the ankle of the affected leg crossed over the contralateral ankle and both thumbs used to apply a lateral directed force on the medial facet of the patella. (D) Hyperflexion test with a towel wrapped around the anterior ankle, which is used to pull the knee into hyperflexion. The towel is allowed to relax and then pulled back again several times quickly.