A method of fusing a sacroiliac joint including: a) approaching a posterior aspect of a sacroiliac joint space with a joint implant including a body extending a length between a distal end and a proximal end; and b) delivering the joint implant into the sacroiliac joint space such that the joint implant passes through an access region defined between a posterior superior iliac spine and a posterior inferior iliac spine, the joint implant being oriented in the sacroiliac joint space such that a portion of the body of the joint implant is positioned within a joint plane of the sacroiliac joint space, and such that the distal end of the joint implant is positioned posteriorly of an anterior boundary of the sacroiliac joint space.