Recently, I was told by my doctor that I have a fully torn anterior cruciate ligament (ACL); I've been told to stay away from karate (specifically Shorinji-Ryu Karate-Do Renshinkan) for the time being. At the moment, I'm not a good candidate for surgery for various reasons.
I have been contemplating where I was going with regards to Renshinkan for some time now, as it does require some fairly low stances and I'm significantly taller than the average; the doctor thinks the low stances might have been putting too much stress on my knee. I ultimately fully tore it while going to throw washi giri (round kick) during kumite after partially tearing it two years ago.
For now, the doctor is taking a very conservative treatment approach, as I have extremely good knee stability (ran a 5k on it recently), but I was wondering what my options are with regards to martial arts that don't put a lot of pressure on the knees? I have been told that kendo might be an option and I've always had an interest in it, but I'm wondering if there are other options that I should take a look at.