I know the sadness you are talking about. I felt as though the world was moving on without me. My good friends and family were very attentive, but I felt like I was sitting my life away. Due to my infection and subsequent second surgery I missed Thanksgiving, a wedding shower and a wedding. Thanksgiving was in the hosptial because I had emergency surgery Thanksgiving Eve late and the shower/wedding were a few hours away, so I just didn't think I could do the car trip. I was so overjoyed that I could begin PT! The therapists and other patients became a little circle of friends.
I thank the Lord everyday for healing me. I have never prayed as much as I did the month between the infection surgery and when the infection really was healed. I couldn't read or watch TV, I tried, but ended up praying and using Ephesians 3:20.
Not many people know this, but when I went in for the original TKR the nurses took me back to start pre-op process. They'd come into the room, give directions and leave again. Every time the nurse left I'd start singing Great is Thy Faithfulness, I was singing my prayer. The nurse became so worried about me, she brought my sister back to pre-op to sit with me. I told her I was fine alone, just praying, but I think they thought I was crazy! Infection surgery, was different, my whole family was in pre-op talking with the OS who was new to me and a revision specialist.
I'm sharing this with you because He is the only way I got through my experience, I couldn't get through it myself or with help from friends/family. He's in control and knows why everything is happening. He used the experience to teach me that through Him I can do anything, but by myself I'm powerless. I'll be praying for you.