This study is examining the effectiveness and safety of a device called the **Minuteman G5** for patients with lumbar spine issues causing chronic low back pain. **Lumbar spine** refers to the lower part of your back. The study involves placing a **fusion plate**, which helps stabilize the spine, and using **bone graft material**, which aids in bone healing. Patients who have tried other treatments without success can try this device. Participants will be checked at 1, 3, 6, and 12 months after the procedure, and yearly for up to 5 years. The study collects data on movement and pain using advanced technology. **Key Points:** - **Visits:** Regular check-ups at 1, 3, 6, 12 months, and yearly up to 5 years. - **Technology:** Uses sensors to track movement and assess outcomes. - **Eligibility:** Must have specific back problems and tried other treatments unsuccessfully. This study aims to improve the understanding of how this device can help people with back pain and if it's safe for long-term use. If interested, ensure you meet the eligibility criteria.