"Fixation element 400 can be manufactured from a wire, a laser cut or a chemical etched tube or sheet made of metal, for example Nickel-Titanium alloy, stainless steel titanium, cobalt-based alloy, or a polymer including a shape memory polymer with or without the addition of radio-opaque material e.g. barium sulfate or of any known and/or convenient material, can be manufactured in any convenient s" . . . . .