Hi MBeth: Can you get into a pool exercise program? I've had 7 spinal fusions and I constantly have to watch what exercises I do to prevent further injury, and one thing I found out is if you add weights to your ankles and you are exercising on land you end up hurting yourself.
If you can get into a pool, which isn't considered weight bearing per se, you can add the weights to your wrists and ankles without the strain on your back. The bouyancy from the weightlessness in the water prevents the weights from pulling too much on your lumbar spine.
I use hand weights for my upper body, but I haven't gone above 3 pounds yet, because when I tried, it made my back worse. I do these exercises on the floor (standing) but it's strictly a upper body work out. For lower body I do walking (limited) some squats and lunges, heel lifts (3 different positions) and try to change the routine around so I don't get tired of it. I also go to PT and am getting a neck and upper body strengtening routine, traction, muscle stim etc, but this is for a neck injury.
Find out what hurts and don't do it. I just started Tai Chi also, and Osteo if your reading this I FINALLY GOT THE TAPE!!!!! I'll tell you more later, but so far I like it. I have to start out slow with it, because some of it hurts but it looks like it's going to be okay for me. I will be going into the pool as soon as my neck gets better.
Just be careful with the weights, especially ankle ones, when exercising on land, they cause too much pull on the lower back. All standing exercises are using your full body weight so adding ankle weights really doesn't increase the workout that much. Let's say you weigh 125, well if you are standing and doing exercises you are lifting 125 pounds already, so is adding a 5-10 pound weight really going to make much difference, except for hurting yourself. If you were only using them for leg lifts, remember you are lifting the entire weight of your leg already without the weights. If you want me to tell you anymore specific exercises I do just ask, there's too many to mention all at once. Instead of the weight around your ankle you could add a theraband and that will increase the tension/pull without adding extra weight to your leg, and it's one way to step up your leg routine, because it requires more strength since you are pulling against the strength of the band.