Shop X-Line X-Line Products Designed by in-house podiatrists, our X-Line range offers precision treatment for a range of foot and lower limb conditions. See our full range of products below. HomeShopX-Line X-Line DJD Insoles An insole designed to alleviate big toe joint pain or ache during and after activity.The X-Line DJD has an array of features which combine to make movement more comfortable £39.95 + More Stay one steap ahead in the treatment of foot and lower limb conditions. Call the HealthyStep team on 01457 839549