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.
In 1992, the United States Border Patrol had approximately 4,139 Patrol Agents on the job. Attrition in the Border Patrol was normally at 5%. From 1995â2001 annual attrition rose to above 10%, which was a period when the Border Patrol was undergoing massive hiring. In 2002 the attrition rate climbed to 18%.