Baseline Time to Stabilization Identifies Anterior Cruciate Ligament Rupture Risk in Collegiate Athletes

Area of Science:

• Sports Medicine
• Biomechanics
• Injury Prevention

Background:

• Anterior cruciate ligament (ACL) injuries pose a significant risk to collegiate athletes.
• Effective screening methods are needed to identify individuals at increased risk.
• Previous studies suggest impaired jump landing stability is linked to ACL tears.

Purpose of the Study:

• To investigate the relationship between baseline time to stabilization during jump landing and subsequent ACL rupture in collegiate athletes.
• To determine if slower time to stabilization is a predictor of ACL injury risk.

Main Methods:

• A case-control study involving 278 NCAA Division I athletes across high-risk sports.
• Baseline single-legged jump landing stabilization times (backward, forward, medial, lateral) were measured.
• Athletes were monitored for ACL ruptures over a 4-year period, with statistical analysis using t tests and logistic regression.

Main Results:

• Nine athletes sustained noncontact ACL ruptures.
• Athletes with ACL ruptures demonstrated significantly slower baseline backward jump landing time to stabilization (1.58s vs 1.09s).
• Each second increase in backward time to stabilization correlated with a 3-fold increased odds of ACL rupture.

Conclusions:

• Slower baseline backward time to stabilization is a significant risk factor for ACL rupture in collegiate athletes.
• This measure can be utilized as a screening tool for identifying at-risk individuals.
• Targeted interventions can be developed based on these findings to mitigate ACL injury risk.