Thank you so much for posting this excellent question and information.

MelioGuide, Margaret Martin's website, is the only place I have come across an in-depth discussion about hip protectors, and I am surprised there isn't more discussion about them on other osteoporosis sites -- at least the ones I follow (I know there are many out there, so I might have missed it).

Here is a link to the MelioGuide website where Ms. Martin presents her analysis: https://melioguide.com/osteoporosis-exercise-equipment/hip-protectors/

Thank you again for raising this topic on the Osteoporosis and Bone Health group site!