1.

Cracking sound in knee joint

Answer»

Answer:

Due to some amount of nitrogen is present in joint.

Explanation:

In the joints,the nitrogen that present in our BODY will ACCUMULATE in the joints and cause sometime crackling sound

This crackling sound is due to the bursting of nitrogen.

if it cause pain then

Patellofemoral pain syndrome

Crepitus of the knee refers to a cracking or POPPING sound or sensation in the knee joint. When the pressure between the kneecap and the femur is greater than USUAL, the cartilage in the joint can start to soften and wear away.



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