A method of fixing a wear element on the front edge of a support using fixing means, where said wear element comprises two arms extending backwards opposite one another, leaving a space therebetween for housing said front edge, thereby defining an assembled position, where said arms have first through openings facing one another, and said support has a second through opening which is sandwiched between said first through openings in said assembled position, where said first and second through openings (4, 5) define an axis of assembly in said assembled position, where said fixing means comprise a C-shaped first body, a wedge and a second body, where in said assembled position, said first body, said wedge and said second body are housed in said openings, said wedge being located between said first body and said second body, and where, in said assembled position, there is located between said wedge and said second body a hollow space suitable for housing the shank of a screw, said hollow space defining a shank axis coinciding with the axis of said shank, wherein the method comprises the following steps: - positioning said first body and said second body in said openings in their assembled position, - inserting said wedge between said first body and said second body, where between said first body and said wedge there are ratchet means suitable for allowing relative movement between said wedge and said first body according to said axis of assembly and a downward direction and suitable for blocking the relative movement between said wedge and said first body according to said axis of assembly and an upward direction, characterised in that the method further comprises the steps of - positioning a screw in said hollow space with its head in contact with a support surface and with its threaded end on a threaded surface, where said support surface is suitable for moving together with said wedge and said threaded surface moves together with said second body, or alternatively, said support surface moves together with said second body and said threaded surface is suitable for moving together with said wedge, - screwing said screw into said threaded surface such that said wedge moves, according to said axis of assembly, with respect to said second body and said first body until said wedge reaches its assembled position, - at least partially unscrewing said screw from said threaded surface, freeing said screw from said second body and from said wedge and removing said screw from said fixing means. - positioning said first body and said second body in said openings in their assembled position, - inserting said wedge between said first body and said second body, where between said first body and said wedge there are ratchet means suitable for allowing relative movement between said wedge and said first body according to said axis of assembly and a downward direction and suitable for blocking the relative movement between said wedge and said first body according to said axis of assembly and an upward direction, characterised in that the method further comprises the steps of - positioning a screw in said hollow space with its head in contact with a support surface and with its threaded end on a threaded surface, where said support surface is suitable for moving together with said wedge and said threaded surface moves together with said second body, or alternatively, said support surface moves together with said second body and said threaded surface is suitable for moving together with said wedge, - screwing said screw into said threaded surface such that said wedge moves, according to said axis of assembly, with respect to said second body and said first body until said wedge reaches its assembled position, - at least partially unscrewing said screw from said threaded surface, freeing said screw from said second body and from said wedge and removing said screw from said fixing means.