Arthritis leads to joint locking because as cartilage wears away, the ends of the bones that form a joint become rough. With severe disease, bone rubs on bone. As the joint moves, the rough edges can catch on one another.
State of Texas. Home. Texas is a state located in the American South and Southwest regions of the United States of America. With an area of 261,797 square miles (678,051 km) and a population of 23.5 million in 254 counties, the state is second-largest in both area and population. About half the state's population resides in Dallas-Fort Worth and Houston metropolitan areas.
Texas is the second-biggest state in the United States, covering an area of 268,601 square miles (172 million acres). In total, 261,232 square miles (97 percent) is made up of land, while the remaining 7,365 square miles comprises water. Less than ten percent of land in Texas is public land (i.e. national and state parks, national forests, BLM land).