This study aims to evaluate the effectiveness of prolotherapy using 5% dextrose compared to steroid and saline injections in patients with lumbar facet joint-related low back pain. The study is designed as a randomized, double-blind clinical trial conducted in a tertiary physical medicine and rehabilitation center. Participants will be randomly assigned to receive one of the three treatments. Clinical outcomes including pain intensity, functional status, and physical performance will be assessed at baseline, 1 month, and 3 months. The results of this study may help determine the short-term effectiveness of prolotherapy as a treatment option for chronic low back pain.