Hi David!
First of all...RELAX!
Take some deep breaths in and let all that worried air right out!
I'm 64 and had my left knee replaced last June. Yes, I had swelling and YES, YES, YES my leg felt like a tree trunk filled with CEMENT for several days, BUT I have to say that with the nerve block while in the hospital I wasn't NEARLY in the PAIN I HAD been experiencing for the previous five BONE-ON-BONE years. Also the nurses kept me quite comfortable with additional pain medication. There was this white board that let me know when I could request additional pain medication. They came right away and were VERY helpful and understanding.
I had some difficulty with the first physical therapy that evening because when I tried to stand I got very dizzy and faint. My great nurse, Cassie, intervened, got me laying down and took my blood pressure. It was 80/60. Of COURSE I was light-headed! She took my temperature, gave me ice water and a cold cloth on my head. She monitored me and sent the physical therapists away. I was fine after that.
I busied myself that night by reading, writing in my journal, texting everyone to let them know I was OK, and drank ice water to flush out my anesthesia. I ended up getting PLENTY of exercise going to the bathroom every 20-30 minutes all night long. It was HYSTERICAL with two nurses, each holding one of my arms and an aide manning the pole of IV fluids, antibiotics and the medication for my nerve block! Four of us in a tiny bathroom to get me situated was even MORE crazy! It was like something Lucy and Ethel would get into!
Anyway, by morning I felt much better and with all my walking back and forth to the bathroom all night, I felt a lot stronger, too. Physical therapy was interesting as I attempted to lift my tree trunk leg. I managed to move my TOES. That was all for THAT session! At least I didn't feel faint or dizzy.
I found that I kept drifting off to sleep. Pain wasn't bad. My next PT session went better. I walked out of the room a bit and back. I also sat in a chair for awhile.
I was released after three days. Crutches worked good to go up stairs. I learned how to loop a belt and place it around my foot so that I could hoist my Tree Trunk wherever I wanted it to go. Gave myself my blood thinner shots. Got help from my husband in placing ice packs then covering me with blankets.
I quit the PAIN meds after my blood thinner shots were done because the Oxycodone was making me pretty LOOPY and not helping much with pain. Ibuprofen worked A LOT better for me.
My husband cooked for a couple days, but then I was feeling well enough to get busy on making good myself. I tried to walk around every hour and iced and rested in between.
I felt pretty good after week three and was ready to trade in my homebound status for outpatient PT. I was very fortunate to have wonderful therapists who guided me gently and taught me many helpful exercises.
I tried to grab naps as often as I could throughout the day and night. Finally around nine weeks I managed to flip over to my stomach and got my first straight four hours of sleep in about eight years. Ahhhhh!
Twelve weeks was another breakthrough time. I began to feel more human and less robotic. I was doing better at STRAIGHTENING MY legs and walking better.
That's when I had my next appointment with my surgeon. I scheduled KNEE#2 surgery for several weeks later! (My SURGICAL leg was doing good. My OTHER Leg was really holding me back!)
Fast forward to October. I had Knee#2 done. Minimal swelling and no Tree Trunk leg this time! All my PT must have helped me be more ready for THIS surgery. I was discharged after two days.
I knew the drill, so things were easier. I found I kept leaving my walker in different rooms, so I chucked it and just used my CANE. After awhile I decided to practice walking around the house without my CANE. I used it when we went out. Then I did away with it altogether.
I hope this helps you to see that although there is some discomfort and annoying aspects of getting new knees, it isn't all horrible. I can now shop without being in agony. I can shovel the walkway and driveway with only my back and shoulders hurting. My knees feel great!
I am SO HAPPY I had both surgeries. The inconvenience and the pain and even my Tree Trunk was worth it.
You will be fine.