I've felt like a lone voice sometimes, saying that after an acute knee injury, esp ligament or meniscus damage, it would be prudent to avoid higher-risk activities like shikko, suwariwaza, torquing moves.
Well now there is this article
http://well.blogs.nytimes.com/2009/1...itis-in-knees/
so maybe somebody or bodies who read it will be pursuaded to better protect themselves long term.