Think this is what I am affected by: http://fastrunningblog.com/forum/index.php/topic,1571.0.html
I don´t really know what I did wrong. It seems like everytime I am going beyond 50 miles/week and trying to implement tempo (carefully), my body reacts with inflammation: last year Achilles tendon, this time kneecap. I believe that I don´t have a good balance between mileage/speed. Last year I barely ran 1.250 miles for the year. Maybe it´s a bit too much to run >50 miles per week this year.
Right now, I am thinking about limiting miles to 45 miles/week and 160/month to stay injury free.
If there are any ideas/suggestions, I would appreciate!