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 covers a total area over 268,000 square miles, making it the largest of the 48 contiguous states. Only the state of Alaska is larger than Texas. Texas borders the states of New Mexico, Oklahoma, Arkansas and Louisiana. The capital of Texas is Austin, while the largest city is Houston. Texas had a population approaching 26.5 million people as of 2013, making it the second most populous state.