Bony fusion implant, insertion instrument, and methods

An insertion system for inserting an implant, comprising:

• a guidewire;
• an insertion instrument, comprising:
• a cannulated rod configured to be inserted over the guidewire and to be coupled to the implant, comprising:
• a rod distal end for coupling to the implant;
• and
• a rod proximal end having a syringe connector,
• wherein the syringe connector is configured to couple to a syringe, thereby fluidly coupling the syringe, the insertion instrument, and the implant such that bone graft is deployable into the implant by the syringe and through the cannulated rod when the cannulated rod and the implant are coupled.

A method for posterior sacroiliac (SI) joint fusion, comprising:

• providing an insertion instrument comprising:
• a cannulated rod having a rod distal end and a rod proximal end comprising a luer lock;
• creating a minimally invasive incision on a patient to provide posterior access to an SI joint of the patient;
• inserting a guidewire through the minimally invasive incision and into the SI joint of the patient;
• coupling the insertion instrument to a posterior SI joint implant;
• inserting, using the insertion instrument and through the minimally invasive incision, the posterior SI joint implant into the SI joint;
• coupling a syringe to the rod proximal end via the luer lock such that the syringe is fluidly connected to the insertion instrument and the posterior SI joint implant;
• and
• filling, using the syringe and through the insertion instrument, the posterior SI joint implant with bone graft.