A portable lower limb therapy device having a support base and a pulley system. The support base includes a platform member fixably mounted on top of a slider and a heel panel positioned behind the platform member. The heel panel, which sits orthogonally relative to the platform member, is attached to the slider so as to extend from the rear end of the slider. The pulley system defines a closed force transfer system that is integrated with the support base. The pulley system employs a cord member, a support member, a cross member, and two handles and is configured to transfer force applied behind the heel panel to the platform member as well as force applied above a user's foot that is positioned on top of the platform member to the platform member.
