With athletes that have recurring  joint problems, there may be a mineral deficiency problem along with
improper training methods that put repeated strain on the joints.  A good example is Tiger whose
training program was reportedly almost like Navy Seal training.  Although Michelle's professional career
has not been as successful as was expected at least on the golf course, she had earned boku bucks
from endorsements so in that regard she has done very well financially and of course she still does manage
to finish in the money most of the time when she does play.  As some say, life is all about luck and timing
and her timing when she first came to the attention of the golf world was  impeccable and 
was instrumental in getting more women interested in golf especially among Asian women, when there
were very few before Michelle came on the scene.  I am not a golfer but I do enjoy watching her play
and find myself rooting for her to do well.