If the step is too high, it can actually cause knee problems.

Houston is trying to come back from two years of knee problems.

Some people are more likely to develop knee problems than others.

He said the cancer and the knee problem had made it a tough season so far.

Most people have had a minor knee problem at one time or another.

Although Smith has a history of knee problems, he did not think this condition was serious.

Knee problems are often hard to distinguish from one another.

Chronic knee problems brought his career to an early end.

Being overweight can put you at greater risk for knee problems.

Smith, her knee problems over, won for the sixth time in 11 years.