What is the Empi Advance Dynamic ROM Ankle Dorsiflexion? An ankle brace designed to treat loss of range of movement in the ankle joint. When can I use it? For use outside the clinical setting, to assist in restoring the extension or flexion range of movement in the ankle joint, following immobilisation due to injury, illness or surgery. Wear while sleeping or resting to achieve permanent range of movement gains. What size is it? Fits left or right ankle. One size fits all. Mouldable contour cuffs & adjustable struts make custom fitting easy & precise. How does it work? A patented eccentric torsion spring delivers gentle, consistent tension across the full deflection range, which gradually leads to a long-term increase in the joint mobility. As the range of movement increases, integrated controls are adjusted to maintain tension on the joint, while the 'memory foam' cuffs are re-positioned to reduce pressure points & increase patient comfort.