597003 Disclosed is an orthotic sock 200 for treatment of an orthopaedic condition increasing dorsiflexion of a wearer&rsquos foot. Such a sock may be used to treat conditions that inhibit an individual from lifting the toe end of their foot towards their shin when walking. The orthotic sock is formed from a resilient or elastic material 260 and has means for restricting movement of a wearer&rsquos foot in one or more predetermined directions and/or means for assisting movement of a wearer&rsquos foot in one or more predetermined directions 270, 280, 290, 300. An opening 400 is defined through a posterior leg portion of the sock. The opening is defined such that a portion of the wearer&rsquos calf is exposed through the sock when the sock is worn. Wherein the opening is bounded by a perimeter and an upper portion of the perimeter acts to locate the sock at an upper portion of the calf muscle. The means for restricting and/or assisting movement of the wearer&rsquos foot comprises one or more resilient panels incorporated in the sock.