An intervertebral implant is configured to be fixed in an intervertebral space defined by a first vertebral body and a second vertebral body. The intervertebral implant includes an implant body sized to be inserted into an intervertebral space, and a fixation assembly carried by the implant body. The fixation assembly includes a fixation housing and a plurality of fixation members attached to the fixation housing. The fixation assembly can be iterated from a retracted position to an extended position that causes the fixation members to travel along a channel of the implant body and out the implant body so as to attach the implant to the first and second vertebral bodies.