@amyt123 I also had REMS scans, and I have posted in the past suggesting REMS to people on this site. But I no longer trust REMS results based on 2 new research papers and my own results. I am trying to now balance out for my former advocating of REMS. Below is an overview from MelioGuide that also indicates where to look to see the original research which I have also read.
https://melioguide.com/osteoporosis-prevention/rems-bone-scan/
EXCERPT 1: "A 2026 study in Osteoporosis International (Chan et al.) found that age and weight alone explain the vast majority of REMS output variance."

EXCERPT 2: "The Bobelyak et al. Study (2025)
An earlier study by Bobelyak and colleagues found similar concerns. Their model using only age, sex, and BMI accounted for approximately 90% of the variability in femoral neck REMS-BMD. Perhaps most provocatively, they reported that REMS showed only minimal change in hip BMD values after a patient had a metallic hip prosthesis inserted, a scenario in which any device truly measuring bone should show a dramatic change."

The second excerpt describes my situation. The local DEXA scan people would not do both of my hips, despite the fact that I have more heavily used one leg over the other for 12+ years due to knee arthritis in my other leg. I was very surprised when REMS reported my hips to be the same T-score! Other studies show that when one limb is stressed more than the other then that leg or arm develops more bone density. But the research above explains that REMS is 90% estimating your values based on things like age & weight, not the actual bone density difference in my hips.

I was planning on relying on REMS, which only cost me about US$170 in Vancouver Canada, to monitor my bones more often than DEXA. So I am very sorry to see this sad outcome.