I 'll have to agree with Switchable Susie. Here is her quote.
"I think the knee supports require more positioning to be comfortable than stirrups.
I prefer stirrups."
In my home I have an examination table that my husband built for me. It's the Rolls Royce of exam tables and it's afforded us a great deal of real medical and fun medical times. The last upgrade was the addition of a pair of Brewer Knee Crutches. I'm adding a web page because I liked the "SIT PRETTY THIS HOLIDAY SEASON" at the top of the page.
https://www.sourcemedicalequipment.com/Brewer-Deluxe-Articulating-Knee-Crutches-p/99504.htm.
Now "Sitting Pretty" I certainly understand. Sitting comfortable is another matter. Another matter for me are the velcro restraints. I do not care for any type of restraint so I don't use those things that came with the Brewer Knee Crutches. I'm a short woman, only 5' 2" and it's difficult for me to get comfortable. Even with all the great articulating hardware and slide bars I've not really felt comfortable after many uses. Here are a few other problems.
My husband and I have great sex times and I'd say 75% of those times I'm in my table. I don't like being on my table because that's uncomfortable. I like to be in my table, being a part of. With the Brewer system my legs are on the supports with my feet kind of dangling about. I feel disconnected! During enema fun I feel a bit lost preparing to expel because I have nothing to set my feet in. Nothing to anchor against as I push. During gynecology exams there is little room for my husband to work between my legs and I'm not comfortable. Being comfortable is most important. I want that "I'm Being Adored" feeling but with my husband not having the necessary room it's not what it should be. Making love, anal or vaginal is difficult because my legs are fixed. I love it when hubby can lean forward and kiss be while we have anal/vaginal fun. I like to wrap by ankles around his neck. Trying to move my legs in and out of the crutches is no fun at all. So, it all looks nice but to me it's not practical. So we have reverted back to the stirrups!
While using the stirrups we reverse them so I can rest the heels of my slippers in the holding sections. That's super comfortable and it allows me to open my legs and let them fall to the sides. So what ever we do we do in comfort and have really great sexy fun with plenty of room to work with.
I hope this helps anyone who might entertain the idea of adding crutches to your tables. To me, they look nice but "Old School" can't be beat. My feet and legs are anchored and hubby is between them making me a happy lady!