A member asked:

Why do knees crack ( like cracking finger knuckles)?

Q: why do knees crack ( like cracking finger knuckles)?

: This cracking sound is fairly common, it can happen at all ages, made by the movement of the periarticular structures such as the ligament rubs against a bony prominence when you walk up stair or bend your knee.

2 doctors weighed in across 2 answers

Dr. Hiep Le answered

Specializes in Nephrology and Dialysis

This cracking sound is fairly common, it can happen at all ages, made by the movement of the periarticular structures such as the ligament rubs against a bony prominence when you walk up stair or bend your knee.

Answered 10/18/2021

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Dr. Matthew Baker answered

Air is being pushed out of the joint

Answered 10/22/2021

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A member asked:

Why do knees crack ( like cracking finger knuckles)?

2 doctors weighed in across 2 answers

Dr. Hiep Le answered

Dr. Matthew Baker answered

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