The Scientific Basis for Back Pain Corsets
You may use a lumbar support (lumbar corset) when you suffer from lumbago or when you want to prevent lumbago.
This ancient folk remedy is marketed and sold with the language of "prevention" and "support" due to laws and other factors that prevent the use of the word "therapeutic" in the marketplace, although current medical thinking is such that only limited use can be recommended.
Scientific evidence for lumbar support
As for prevention, some studies have concluded that use of the product can reduce the number of sick leave days due to back pain, but there are also studies with conflicting results. And since the results are limited to only the days of rest, it is unclear whether it is helpful in reducing pain.
As for therapeutic purposes, some studies have concluded that there was no significant improvement when used in patients with acute/subacute low back pain, while other studies have confirmed that the combination of different therapies can significantly reduce pain and shorten sick leave more than alone.
van Duijvenbode I, Jellema P, van Poppel M, van Tulder MW Lumbar support for the prevention and treatment of low back pain. Cochrane Database of Systematic Reviews 2008, no. 2. Art. No.: CD001823. doi: 10.1002 /14651858.CD001823.pub3.
In Japanese Medicine.
There is no text in the medical guidelines that recommends lumbar support for lumbago, and there are reports of skin lesions, tachycardia, gastrointestinal disorders, hypertension and muscle tissue disorders.
However, the use of lumbar support is "weakly recommended" as some studies have shown it to be more useful than massage therapy for lumbago.
Conclusion
This is the scientific evidence that lumbar support can prevent or treat back pain. As a medical professional, I would expect that the situations in which I would use this method would not be in a medical service environment, or that I would distrust medicine and believe in lumbar support.
However, since it is a tool for the purpose of limiting spinal mobility, stabilizing the spine, and reducing mechanical load, it is recommended to use it for its intended purpose.
