I’d have to disagree with the previous advice. I specialize in working with patients with osteoporosis and have physicians send osteoporotic patients to my facility regularly.
The first thing that you need to assess is the severity of each condition. Second, you want to find out what exercises exacerbate these conditions and avoid those. Spinal compression and high impact exercises are indicated for osteoporosis, as long as the osteoporosis is not too severe (close to 2 standard deviations from the norm). Heavy resistance training and impact exercises, such as jumps and box drops, stress the bone in a positive way that increases osteoblast activity.
If you are unsure where to begin ask the client’s physician for some guidance. But most physicians recommend too low of an intensity.