An apparatus (20) for use in retaining bone in a desired spatial relationship includes a rod (22) and a housing (26) that has a passage (24) through which the rod (22) extends along an axis (28). A connector {42} extends from the housing (26) and engages a bone. The connector (42) is movable relative to the housing {26} into any one of a plurality of positions. A locking member (68) is deflectable between a first condition for allowing relative movement between the connector (42) and the housing (26) and a second condition engaging the connector (42) to hold the connector (42) in any one of the plurality of positions relative to the housing (28).
