Same for knees and hip I guess?
Only if the knees have the support of the muscles around it.
If you having your knees done because they scrap / floating gristle etc ........... may l suggest that you
do not do knee bends.
Straight leg raises by all means but if your knees are shot because of the grating underneath the knee cap, you will only do more damage and cause more pain.
I make these comments from having spent the last 40 years with knee issues, having had a work accident when l was a first year apprentice in 1978.
I spent about 3.5 years in and out of physio.
In the end, the doctors cut bone from my hip, sliced the bone in my leg going to my knee, inserted & stapled the new bone to attach it, thus raising the knee cap off the joining of the two knee bones, thus stopping the grinding.
Nowadays, they have different methods but Bruce Sheppard, head of the AMA at the time, was my orthopedic doctor back then ................. he did a great job after 4 other attempts by other doctors.
Anyway, hope it all goes well for you, Drakon.