As indicated above, the rod reduction system 10 can also include a fastener 16 that is retained by a fastener-retaining member 42 disposed on a distal portion 14 b of the drive rod 14 as shown, for example, in FIGS. 5A-B. While a variety of fastener types are known in the art, the fastener 16 generally can be a set screw with a bore extending therethrough.