21.   The ACL is one of the most important ligaments to athletes because its main function is to stabilize the knee joint during deceleration.

22.   The ACL is one of the most important ligaments to athletes because of its main function, stabilization of the knee joint during deceleration.

23.   The knee joint is nothing more advanced than one might find on a garden gate.

24.   The seventh-year offensive tackle swears that the frigid water reduces lactic acid build-up in his leg muscles and inflammation in his knee joints.

25.   With no working knee joint, she will walk with a rigid leg.

26.   Woods landed awkwardly in the pit and chipped a bone in his right knee joint.

27.   A tournament doctor said it was inflammation in the left knee joint.

28.   Do you have a titanium alloy knee joint, a myoelectric arm, a pacemaker, breast implants, contact lenses, a polio vaccination?

29.   Doctors also said they also treated a cyst near the rear of the knee joint.

30.   Gwynn underwent arthroscopic surgery to remove small pieces of cartilage in his left knee joint and will be on crutches for about four weeks, the team said.