Knee pain and popping is a common problem and can be caused by a number of factors. Another term commonly used for popping in the knee is Crepitus, which essentially means a noisy joint, whether it be popping, clicking, cracking or snapping.
The final type of erosion is attrition. Attrition is a way of eroding the riverâs load, not the bed and banks. Attrition is where pieces of rock in the riverâs load knock together, breaking chunks of rock off of one another and gradually rounding and shrinking the load.
a reduction or decrease in numbers, size, or strength: Our club has had a high rate of attrition because so many members have moved away. 2. a wearing down or weakening of resistance, especially as a result of continuous pressure or harassment: The enemy surrounded the town and conducted a war of attrition.