21.   With apologies to the NHL, center Mike Modano might have done himself a favor by twisting his knee Tuesday night in Pittsburgh.

22.   Perry twisted his knee Friday and limped through the second round.

23.   A meniscal tear can occur when the knee is forcefully twisted.

24.   A torn meniscus is considered a fairly common basketball injury caused when the knee is twisted, overloaded with weight or overused.

25.   Arnaud was stuffed at the line by John Abraham, then apparently twisted his knee in the pileup that followed.

26.   Barnett suffered strained medial ligaments and inflamed tendons when he twisted a knee during the second test in Palmerston North last Friday, officials said.

27.   Burtin fell and crashed into the safety nets, twisting his knee, at the Orso corner, in the upper part of the icy and twisty Stelvio course.

28.   But he twisted his knee at an indoor tournament in Stuttgart in February, had to undergo surgery and missed seven weeks of tennis.

29.   But she twisted her knee when she fell on her opening vault.

30.   Egan twisted his knee last November, after which he has experienced swelling and discomfort, Hutchison said.