Nice seeing a thread about this I trained Taekwondo in my late teens, became instructor, and was training for region championships, just three clicks from 1st dan, when a car accident injured my knee which took me out of any sports; couldn't even walk stairs without pains. Public health care simply said nothing to do.. Eight years later, on a business trip to Singapore, the business we visited turned out to also produce electro- and laser acupuncture equipment, which brought me to a Chinese doctor who turned out to one the foremost experts in acupuncture. He gave me three treatments while jokingly saying "they don't fix these things in the west? hehe, we do here ", never since felt any pain, but didn't get back into the sport. I'm now doing some self-training in a mix of Taekwondo and Shaolin techniques, mixed with Yoga and meditation. For me, it's now exclusively about self-balance, control, agility - quite handy for my aggressive skating, and working with music - and moving on with spirituality. Oh well.. might be handy in case someone should have yikes ideas, you know..