Purpose: To test the ability of the knee/leg to accept load and push off in a lateral direction.
Supplies:Sport Cord (Topper Sports Medicine, black cord)
Description:Cord setup: 1. Place waist belt through the handles; attach sport cord end to the door jam or secure post. 2. Attach waist belt. Stand with the involved leg toward the cord attachment. 3. Step away until tension is reached where the athlete compensates with leaning. 4. Tape a line on the lateral aspect of the involved foot. 5. Measure the distance from the greater trochanter to the floor. 6. Use this measured distance to place a second tape line parallel to the first.
Technique:The athlete must land on/inside the first tape line with the involved foot and on/outside the second tape line with the uninvolved foot.
The athlete is to hop from one leg to the other; absorbing energy as they land by bending at the knee (primary) and the hip (secondary). Instruct the athlete that one point is earned for achieving 30o of knee flexion excursion throughout the test. Excursion is defined as the amount of absorption from knee flexion at landing to max knee flexion.
Each repetition should take 1 second. Explain to the athlete that they must explode laterally, land, absorb, and maintain control for a goal of 80 seconds. Only one foot should be on the ground at any time.
Scoring:1 point is earned for every 20 seconds completed with proper form.
Testing is stopped if the subject is unable to complete with the above form on 5 consecutive repetitions or 10 nonconsecutive repetitions.
Testing is stopped if the patient has pain > 3/10 for 30 seconds.
1 point is given for good form/absorption if 30o of knee flexion excursion is achieved throughout the entire 80 seconds.