Thank you, timely: I have signed up with, and have met once with, a physical therapist. I requested PT after my endocrinologist described my conditions with bones weaknesses, and was referred to one. The exercises assigned so far emphasize strengthening of the back muscles and are most interesting. They focus on the abdomen area and the thigh area. I will mention the treadmill possibility to her Friday when I am to see her again.
I am the sole caregiver for my husband who was paralyzed on his right side from a stroke fifteen years ago. This care and the relatively large house we live in does provide some built in weight bearing exercises. Judging from what the endocrinologist warned, these domestic demands must be done with caution as I am told one wrong move, just a stretch in the wrong direction, may result in permanent back pain.
Thank you again, I am taking your example seriously and shall proceed with caution.

Wow, great advice. I do a lot of water PT, especially because my hip replacement is 16 years old and I'd like to avoid a revision. I also wonder about the pharms for bones in reference to my hip bone and its relationship to the ceramic/titanium part. If the jaw can be tricky with infection etc. I know a hip replacement can also be tricky with infection.
I have had a history of a torn miniscus and addressing the problem involves exercises where I do lift my back in lying position with bent knees. For muscles and bone strengthening now the PT gave me an exercise where I bend the back INTO the floor, meanwhile tensing the inner abdominal muscles. I know walking is very good as a weight bearing exercise. I do a lot of it around the house, up and down the stairs around twelve times a day at least. And shopping and browsing a good bit at the stores. Not so much walking on a treadmill or just 'taking a walk' in the neighborhood. But walking in place, I'll do that more. Have begun doing that. Do you add weights on your legs?