These will determine whether you want to use waist protection:
If there are more than three compression fractures of the lumbar spine and there are 1/2 fractures, you need to customize the stainless steel vest. His principle is to take the crotch as the basic point (stress point) and connect the armpit of the upper body as the support point under the stainless steel bracket to reduce the stress on the lumbar spine. I once had a personal product customized by a prosthetic factory 30 years ago (customized according to your height, waist circumference and bust size). After wearing it for two years, it was very uncomfortable, and after 2-3 years, it was impossible to discard it.
If you can't reach that level, don't do this kind of waist protection. There is also a kind of hard waist protector (made of hard cowhide and fiber) on the market, but it is aimed at lumbar disc herniation and lumbar sprain, and it is only a function of limiting activities for lumbar compression fracture.
Like me, I recovered well after three years.
I hope you don't have to wear a stainless steel vest like me, but you can sleep without lying down, lie down without sitting, and find a backrest if you want to sit.
I hope my experience will help you, and I wish you good health!