A lead retention assembly includes first, second and third retention members. The first retention member defines a first opening configured to receive a lead body. The second retention member is longitudinally spaced apart from the first retention member and defines a second opening configured to receive the lead body. The first and second retention members are substantially aligned along a first axis. The third retention member defines a third opening configured to receive the lead body. The third retention is disposed between the first and second retention members and is biased in a position such that the third opening is substantially centered on a second axis. Upon application of a compressive force, the third retention member is moveable to a position such that the first, second, and third openings are substantially aligned along a common axis, allowing the lead body to be inserted within the first, second and third openings.