Yu-Na Kim's condition does not sound very promising.
http://yunaforum.com/index.php?showtopic=269&pid=2583&st=0&#entry2583
http://yunaforum.com/index.php?showtopic=269&pid=2583&st=0&#entry2583
Yuna will go through a re-examination at 21th of this month to figure out the exact state of her body and the progress so far...
Yuna hasn't been skating since 31th, last month, because of pain in the hip joint.
...
The doc diagnosed her case as below:
Her left hip joint ligament became wider, and hip muscles swelled out. She's keen on competing at Worlds concentrating on 6-hour-long treatment & rehab per day.
But, the situation is different from the disk & tailbone injury at the year-end of 2006. This time, she cannot skate on the ice until the hip joint ligament gets narrower, so this is the factor that causes worry.
...