[header] How to replace a fence post in concrete [title] Disconnect the post from any fence panels or wires. [step] To gain access to the specific post you want to remove, you'll first need to detach any fasteners securing the post to a wood fence panel or wire mesh. These fasteners may include : [substeps] Nails placed through a wood post into a wood panel. 
Screws connecting the post to the fence via a detachable panel. Tension bands holding wire mesh to the post.