Prophylactic Braces
Limited evidence supports that the practitioner might not prescribe prophylactic knee braces to prevent ACL injury, because they do not reduce the risk for ACL injury.

Rationale
One moderate strength and one low strength study demonstrated no reduction in ACL injury rates with ACL prophylactic bracing in high school and collegiate American football players.25, 108

Future Research
Additional research could investigate the effect of prophylactic bracing in other populations (i.e. adolescent female soccer players) in which ACL injury rates are high.