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.
Once a person has fractured their knee cap, many symptoms will occur. Severe pain and swelling will be present along with some deformity in the knee area and thigh. If the knee cap is totally fractured, it may be possible to feel a gap. The patient will be unable to walk with a broken knee cap or put weight on or lift the knee area, although the ankle and toes can normally be moved as usual, except if there is injury to the neuro-vascular system in addition to the knee cap. Knee fractures can be a series of small cracks or a single or multiple break.