First off, I know this is a weird forum to ask in, but I also know there are a lot of people here who work out. So here goes.
My knee used to lock up periodically. It was that way ever since I was 14 or 15. It would usually happen if I sat in an awkward position. I used to have to use force (kick) to make it go away. It was a painful process and would sometimes leave my knee sore.
About 3 months ago, before Christmas, I was sitting down with my legs crossed and got up quickly. There was a loud bang from within my knee and it was extremely painful. After that, I was unable to fully extend my leg, and it hurt like hell to walk on. I was given a magnetic X-ray type thing and they concluded a piece of the meniscus had broken off. They also believed that I'd previously had a fracture on it, causing the lock ups.
On December 19th, the broken piece was taken out via keyhole surgery. The surgeon said I would be able to (and should) walk straight away, and begin exercising after about 6 weeks. I walk every day (parental leave = long walks with the pram), and have walked almost every day since the surgery.
Three weeks ago (so, what, 10 weeks after surgery?) I got a gym membership and started working out 3 times a week. My routine was 10 mins warmup on a bike, various machines (abs, thighs, back mostly) and then 15 mins on a cross trainer. All in all about 50 minutes of workout including stretching. After I had been 6 times, my knee swelled up and got really hot. It also hurt a bit. I decided to take it easy for a few days and just walk. However, my knee is now swollen and sore after just my normal 45 mins - 1 hour pram walk!
I'd like to hear from people who have had similar knee injuries. How long did it take to heal? When could you exercise and to what extent? Did I screw up completely starting workout? I obviously called the doctor but was unable to get an appointment until Monday next week I was getting really into working out again (not been working out properly since before I got pregrant, 1 and a half years ago) and I'm so frustrated with this stupid knee thing.