In accordance with one aspect, an instrument is provided that permits the precise delivery of bone fusion material, such as autograft or allograft material, to one or more bones during surgical procedures. In another aspect, a system and a method are also provided for percutaneous delivery of bone fusion material, such as morselized autograft or bone graft, in a minimally invasive approach through one or more relatively small incisions in a patient. In yet another aspect, an expansion device is provided having an internal compartment and being shiftable between an insertion configuration and an expanded configuration. Bone fusion material may be injected into the internal compartment of the expansion device and travel therealong for bonding to one or more bones approximate the expansion device.
