After the Civil War , with the protection of the Thirteenth , Fourteenth , and Fifteenth Amendments to the Constitution and the Civil Rights Act of 1866 , African Americans enjoyed a period when they were allowed to vote , actively participate in the political process , acquire the land of former owners , seek their own employment , and use public ...
In the knee, for example, cracking or popping may occur if the patella (knee cap) is slightly out of alignment, and rubs on the adjacent tissues. Other causes of joint noise are the snapping of tendons or scar tissue over a prominence or something referred to as cavitation. Cavitation frequently occurs in synovial joints when a small vacuum forms in the synovial fluid and a rapid release produces a sharp popping or cracking sound.
You may also be suffering from runner's knee a condition that is caused when the knee cap is out of line and not tracking properly along the femur. This is often caused by an injury or stress on the tibia, or the lower bone in your leg which protects our kneecap. If any of these bones come out of line, the knee may click when it is bent. You may also suffer runner's knee if the IT band which stabilizes the kneecap or your quad muscles are overworked.