Former NBA Most Valuable Player Joel Embiid underwent arthroscopic surgery on his left knee on Wednesday and will be reevaluated in roughly six weeks, the Philadelphia 76ers said Friday.

Years of wear and tear can take a toll on your knees. If you have experienced dull, achy, or sharp knee pain while standing, chances are that your pain is being caused by one of three conditions: ...

Knee pain at night is a common condition caused by injury, arthritis, bursitis, gout, and more. When it happens at bedtime, it can also lead to insomnia, which can leave you exhausted during the day.

Straighten your knee fully (but not locked or hyperextended) while keeping the back of your leg against the ball. Hold your knee straight for five seconds, and then slowly release. Straight leg raises ...