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One aspect of the invention relates to an orthopedic screw system. The system comprises an elongate outer member and an elongate inner Screw. The outer member has an exterior sidewall, a first end, a second end opposite the first end, and a longitudinal inner channel that extends between and is open at the first and second ends, the inner channel defining an inte rior sidewall. The exterior and interior sidewalls of the outer member are provided with screw threads. The screw threads of the exterior sidewall are adapted to engage bone. The inner screw has a shaft with a first shaft end proximate and a second shaft end opposite the first shaft end. The shaft includes screw threads along Substantially the entirety of its length con structed and adapted to engage the screw threads of the inte rior sidewall of the outer member so as to bring the outer member and the inner screw into engagement. The outer member …