The present invention relates to a novel method for producing shaped metal bodies useful as implant for orthopedic surgery or dental practice. The method yields shaped metal bodies having a titanium or titanium alloy core thoroughly or partially coated with magnesium or a magnesium alloy. The method makes use of metal injection moulding (MIM) or fused filament fabrication (FFF), which are metalworking processes by which finally-powdered metal is mixed with a measured amount of a binder material to comprise a "feedstock" capable of being handled by plastic processing equipment through a process known as injection moulding. The moulding process allows dilated (oversized due to the presence of binder) complex parts to be shaped in a single step. After moulding, the powder-binder mixture is subjected to steps that remove the binder (debinding), and sintering densify the powders. Both, the core of the shaped metal bodies of titanium or a titanium alloy, and thereafter the magnesium or magnesium alloy coating are prepared by subsequent MIM steps.