<p>Used with HipTrac, the Above-the-Knee Binding, in combination with the Ankle Binding, secures your lower leg to the HipTrac. Depending on use, these will be replaced like a pair of shoes every 6-18 months.</p><br>--<br><p>Used with HipTrac, the Above-the-Knee Binding, in combination with the Ankle Binding, secures your lower leg to the HipTrac. Depending on use, these will be replaced like a pair of shoes every 12-18 months.</p>