Skeletal system: Difference between revisions

The ball and socket joint allows for increased range of movement. The best examples of this type of joint are the shoulder and hip joints. Even though the shoulder is considered a ball and socket joint, the hip is considered the most "true" ball and socket joint because the ball is almost completely enclosed by the socket. The shoulder is more like a ball resting inside of a shallow dip, rather than being fully encompassed. This does, however, offer increased movability and range, at the cost of being easier to pop out of joint or being injured. Shoulder problems are very common because of this joint structure. In fact, 13.7 people in the United States had treatment for shoulder-related problems in 2003.[http://www.pueblo.gsa.gov/cic_text/health/shoulderqa/shoulderqa.htm]