Tenon Medical, Inc., a medical device company, engages in the development of implant for the treatment of severe lower back pain in the United States. The company offers Catamaran SI-Joint Fusion System, an invasive approach to the sacroiliac joint (SI Joint) using a titanium implant for treatment of the most common types of SI Joint disorders that cause lower back pain. It also provides Catamaran Fixation Device which passes through both the axial and sagittal planes of the ilium and sacrum, transfixing the SI Joint along its longitudinal axis. Tenon Medical, Inc.