Tenon Medical, Inc. is a medical device company. The Company has developed the Catamaran SI Joint Fusion System that offers a novel, less invasive approach to the SI joint using a single, robust titanium implant. The system features the Catamaran Fixation Device which passes through both the axial and sagittal planes of the ilium and sacrum, stabilizing and transfixing the SI Joint along its longitudinal axis. The angle and trajectory of the Catamaran surgical approach is also designed to provide a pathway away from critical neural and vascular structures and into the strongest cortical bone. The Catamaran System is designed specially to resist vertical shear and rotation of the joint in which it was implanted, helping stabilize the joint in preparation for eventual fusion. The Company has also developed a proprietary two-dimensional (2D) placement protocol as well as a protocol for three-dimensional (3D) navigation utilizing the latest techniques in spine surgery.