An anchor device for use in sacroiliac joint stabilization comprises a housing having a bore, one or more apertures, and a threaded outer surface, one or more engagement members at least partially disposed in the housing, where at least one of the one or more engagement members is movable between a retracted position and an extended position such that, when the at least one of the one or more engagement members is in the extended position, the at least one of the one or more engagement members extends through at least one of the one or more apertures, and where, when the at least one of the one or more engagement members is in the extended position, the at least one of the one or more engagement members is configured to engage a cortical wall of a sacrum bone.
