The prosthesis used is made by Zimmer. Here are photographs of the hardware I took from their web site.
The socket is a titanium shell with a high-density polyethylene insert. The titanium shell is roughened so the bone will grow into it. Here are two views of the shell:
The inserts have tabs that fit into the holes to prevent movement. Here are the polyethylene inserts:
The replacement ball is attached to a long shaft that fits down into the femur. It is also titanium and it has also been roughened so the bone will grow into it. Here is the shaft:
The ball is chrome plated titanium. Here is an assortment of balls and some additional photos of the sockets:
You can see the bumps in the polyethylene insert that fit into the holes in the shell.