hi, laughlin. It might be nice to know that statistically patients with bone on bone hip arthritis don't also have osteoporosis. The best thing for the arthritis is to develop the muscles and ligaments around the joints, but by non-impact exercises walking and swimming and physical therapy.
To answer your real question though is the endocrinology guideline of not prescribing testosterone for men who aren't hypogonadal which would be a total testosterone level of less than 300ng/dL. The reasoning is because of the increase risk of thick blood and cardiac issues and prostate cancer.
It is fairly easy to get prescriptions for testosterone from clinics many of which advertise their use of testosterone.
It would be good to have a discussion with the endocrinologist, though, to become more thoroughly aware if risks and the importance of subsequent testing.
Osteoporosis is an endocrine disease. Endocrinologists are the most well trained to handle osteopenia and osteoporosis. For both men and women the primary cause of osteoporosis is loss of estradiol.
It's an interesting fact that you point out about the undeveloped use of testosterone replacement for male osteoporosis. Part of the reason for this is that the primary cause of osteoporosis in men is in the use of ADT for prostate cancer. Because testosterone gives prostate cancer fuel there has been a worry about replacing it after radiation or surgery in the worry about recurrence and metastasis.
Most dexa machines are programed with comparisons including sex. So your T score probably compares you to 30 year old males.
This article is interesting, but maybe not enough for you to read. https://pmc.ncbi.nlm.nih.gov/articles/PMC4275049/
I had trouble finding this link it's been so many years since I read it. It might not fascinate you, but supports the first sentence of my post. Making preventing the development of osteopenia not a good argument for testosterone replacement. "A negative association has been reported between osteoarthritis and osteoporosis." https://pmc.ncbi.nlm.nih.gov/articles/PMC1004483/ 1991 I must be old with a good memory.