Ouch, my knee!

I've been having trouble the last couple sessions getting my feet under me. The problem seems to be a weak left knee. It's the same knee that I dislocated several times as a teenager. It has always been a small problem for me, but for the last month or two, it's become a bigger problem. I did something to it several weekends ago when I surfed multiple times in a weekend. I don't know what I did, maybe just too much exeercise. But that weekend it swelled up, and it's been weak since then. It was bothering me yesterday at G's, but it wasn't stopping me. The TH was getting into the waves nicely and I was fighting my weak knee to do what I needed it to do. After two successful (but not great) rides, I decided to paddle deeper where the wave was more exciting. The first wave I went for sucked out before I got my feet all the way set and I lost control. My left foot kinda stuck to the board as my body fell and I strained my knee. I heard some noise (maybe in my head) but it wasn't painful right away. Still, I knew I did some damage and paddled back to where the waves were a bit easier. I got to my feet on another wave but after than just rode them on my belly. My knee felt okay at rest, but when swirling my feet to swing the board around, or just to stay balanced while sitting, my knee complained. I took a wave in and made the walk back down the beach careful to not put to much stress on the knee.

By the time I got back to the car, my knee was starting to tighten up. Still not painful at rest but sensitive to movement I took a single does of ibuprofin and made my way home. An hour and a half later, getting out of my car in my driveway and my knee wasn't cooperating. I'm keeping up the low-dose ibuprofin and trying to maintain mobility in my knee by walking around. But I'm also sitting at my work-from-home desk and I have a ton of work to do. I know I have field work, but nothing scheduled yet because I've been busy with office work. I hope I'll be ready to surf this weekend, but I'm not so sure this 46-year-old body will repair that quickly. So it's possible the three-day weekend will be non-surfing. Sounds like a good time to go canoeing!