@jewlz1: My back exercises are geared to deal with bone-on-bone vertebrae in my lumbar region, resulting in back pain and sciatica. Very simple set (10 to 15 reps each): sit up straight on chair or bed with feet flat on floor. Slowly bend upper body forward and down as far as possible, back to sitting straight. Next: Lay on floor, knees bent. Put heel of one leg sideways on opposite knee. Gently pull the bent leg toward your opposite shoulder (sort of cross-wise motion). Do each side. Next: gently pull both bent knees toward your body - help with hands to pull close to chest, then relax a little. Last, on your back, with both knees bent, with hand support behind knee, straighten the leg to have foot point at ceiling, then let go back to bent position. One at a time. Again, each side. Takes 5 to 8 minutes, loosens up your whole lower back. Finally, stand with your back against a solid surface (sink, countertop), support your back with hands, and slowly bend your upper body backwards as far as you can. I’ve gotten to the point where I can see my face upside-down in the bathroom mirror when doing this (months, not days of practice). That’s it. Immediately after TKR I had to make some adjustments, did as much as possible. But even then, did them daily. I usually end with “bonus” 20 bridges, and 30 squats, but that is my own “thing”.