Do back stretchers actually work for back pain?

Across the reviewers and communities we read, the honest consensus is that back stretchers often provide real but temporary relief. Many r/backpain and r/scoliosis posters describe loosening and short-term comfort, while others say the effect fades and a few note arch-style boards can aggravate an already tight lower back. They are best viewed as one tool alongside exercise and professional guidance, not a cure.