Running Biomechanics after ACL Reconstruction
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INTRO:
About 250,000 ACL ruptures are reported each year in the USA.
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Majority undergo reconstruction (ACL-R) followed by extended rehabilitation.
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Running is a basic tenet of rehab and is critical to return to sport.
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The rate of return is only ~65%.
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The incidence of a secondary ACL rupture is up to 40x greater than sustaining a primary ACL rupture.
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Risk of OA is 4x higher in individuals after ACL rupture.
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Return to running can begin ~ 6–8 weeks after surgery.
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During this period, movement and muscle activation alterations are commonly observed during tasks, such as running.
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This Systematic review looked at
differences in movement and muscle activation for ACL-R and how it may affect running in:
Short term (0–6 months).
Mid-term (6–12 months).
Long term (more than 12 months).
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This will help clinicians to optimize rehabilitation to improve outcomes and long-term disability after ACL-R.
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KEY HIGHLIGHTS:
Running biomechanics alterations are reported from 3 months to at least 5 years after anterior cruciate ligament reconstruction (ACL-R). .
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Patellofemoral and tibiofemoral joint contact forces differed at least 2.5 years after ACL-R.
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Sagittal plane knee mechanics are the most altered variables during running after ACL-R. .
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Targeted strengthening and neuromuscular training for Quadriceps and Hamstring asymmetries should be implemented to improve running biomechanics after ACL-R.
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CONCLUSIONS:
These deficits do not resolve with time and specific clinical interventions may be needed to reduce long-term disability.
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