ACL Injury Risk from Hamstring-to-Quad Ratio Calculator

Estimate ACL injury risk based on isokinetic hamstring-to-quadriceps ratio. Conventional H:Q less than 0.50 at 60 deg/s and functional H:Q less than 0.60 are established risk thresholds for non-contact ACL injury.

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🏅 Sports Note: These calculators provide estimates based on population data and validated formulas. Individual results vary by physiology, training level, and testing conditions. Consult a qualified coach or sports scientist for personalized guidance.
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How It Works

Estimate ACL injury risk based on isokinetic hamstring-to-quadriceps ratio. Conventional H:Q less than 0.50 at 60 deg/s and functional H:Q less than 0.60 are established risk thresholds for non-contact ACL injury

Each component has a specific meaning:

  • Isokinetic hamstring-to-quadriceps ratio — The isokinetic hamstring-to-quadriceps ratio recorded for the scenario being assessed.

Note: Interpret the acl risk h:q ratio result against the thresholds and context described above.

How to Use

Enter the isokinetic hamstring-to-quadriceps ratio for the scenario you are assessing. Estimate ACL injury risk based on isokinetic hamstring-to-quadriceps ratio. Conventional H:Q less than 0.50 at 60 deg/s and functional H:Q less than 0.60 are established risk thresholds for non-contact ACL injury. Use the acl risk h:q ratio result to inform your calculation.

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