Predicting Non-contact ACL injury with a Modified ToePro Dynamometer

Seven percent of athletes who score less than 20% body weight will tear their ACLs each season.1

Recent research confirms that when piriformis strength is less than 20% body weight, the individual is significantly more likely to be injured. ACL tears are especially common when a weak piriformis is present.

The ToePro/Hip Strength Dynamometer makes it easy to measure hip strength. An ankle strap attachment allows you to create a ratio between hip strength and body weight. Simply multiply the patients weight in kg by .2 to work out what minimum strength is and perform the test e.g. 80kg x .2 = 16kg.

1. Khayambashi K,  Ghoddosi N, Straub R, et al. Hip Muscle Strength Predicts Noncontact Anterior Cruciate Ligament Injury in Male and Female Athletes: A Prospective Study. Am J Sports Med. 2015;(44):355-361.

Read the full article by Dr Thomas Michaud on hip strength and knee function here.