@marcd : Thank your for your information. I will go look at all your links as time permits. In general, I think first I need to find out more about my specific state of Osteoperosis. The diagnosis was made sort of as an adjunct to breast cancer diagnosis. At that time I was not really focused on bone strength too much, as you can imagine. The one thing I was told is that my right hip had just changed from Osteopenia to Osteoperosis.
No comments were made regarding bone issues in other locations, but I aim to find out exactly what the DEXA test showed.
Anyway, I’ll check with my PT guy who got me through shoulder and knee surgeries for his guidance in starting a specific exercise regimen.

Regarding walking: while I don’t wear a weighted vest, I’d rate my 2 mile walks a little more strenuous than strolling. Outdoors, with several inclines, and at a pace of 120+ steps/minute.
Someone else mentioned no bending forward from spine (good luck with that when the TKR makes kneeling very uncomfortable, and trying to pull weeds), nor heavy lifting (so I may need to discontinue hauling 40 lbs. bags of mulch or soil, I guess).
Anyway, I do appreciate all the research you have done on this subject, and intend to find the best applicable way to deal with the loss of bone strength.