Why does my knee pop and crack?

A large number of people have aches and pains with no specific injury. Some people even have symptoms in their joints that might not hurt. In this Ask Dr. Geier video, I answer the question of a young athlete who complains that her knee pop and cracks.

Abigail in Chicago asks:
Hi! I am a junior in high school. I am extremely active and play tennis almost every day. I have been experiencing no pain in my knee. However, my knee cracks almost every time I lean down. Should I be concerned?

Crepitus is the formal term for popping or cracking under the patella (kneecap). It can be very common in adolescents and young adults with no underlying structural damage. In this video, I discuss why might your knee pop and crack and what you could do about it.

Also read:
Should I go to the doctor after a knee injury?
7 signs your knee injury could be serious

Female whose knee pop and cracks

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