1.   A bum knee had him laid up for weeks at his Montana retreat last summer, putting a damper on his post-championship respite.

2.   His left knee had a missing ACL replaced with a ligament from a cadaver.

3.   His knee has no swelling.

4.   The knee has to be straight before the step.

5.   Their knees had greater laxity than the knees of men, according to Huston.

6.   Unlike the shoulder surgery he performed Thursday on Dodgers outfielder Todd Hollandsworth, Jobe said Karros was able to come back quicker because the knee had more support.

7.   But he said the new artificial knee will have an extended-life power source, will need less maintenance and will have more flexibility.

8.   Flyers doctors say that his injured knee also has a small hole in the protective surface over the bone.

9.   He said the whole knee might have to be replaced in the future.

10.   His deteriorating, arthritic left knee probably will have to be replaced.