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Resist anterior translation during knee flexion
33%
338/1014
Resist posterior translation during knee flexion
11%
111/1014
Resist rotatory loads during knee flexion
15%
153/1014
Resist rotatory loads during knee extension
40%
401/1014
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The structure shown is the posterolateral bundle of the anterior cruciate ligament (ACL). This bundle is optimally positioned in the knee to resist rotatory forces during terminal knee extension. "Resist anterior translation during knee flexion" best describes the anteromedial bundle. "Resist rotatory loads during knee flexion" is unlikely because the posterolateral bundle is tightest during knee extension. The posterior cruciate ligament, not the ACL, functions to resist posterior translation. Illustration A highlights this relationship of the anteromedial and posterolateral bundles.
1.9
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