@treads - I'm still sleeping in the guest room where we have my grandmother's bed. It is an old iron frame bed with bed springs that weigh about a ton! It is a high bed - top of mattress is about 30 inches from the floor. It is quite a bouncy bed and when sitting on the side in the middle, it has a nice spring to it that I use to help flex my knees. Right after surgery, i would scoot to the foot of the bed where there was less bounce (sag) and I didn't need to push off to stand. I'd say at 4 weeks was when i could comfortably rise from a regular chair without much difficulty. Still needed support with the cane or the table to get up but I did it by myself.