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Classifying Joints - Classifying Joints athletics,...

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Classifying Joints The intricate movements of a human,  such as those performed in dance and  athletics, are accomplished by using a  wide variety of joints. Though joints  enable the skeleton to be dynamic, they  also play an important role in stability  and protection. In fact, the mobility of a  joint is often inversely proportional to its  stability. For example, the sutures of the  bones of the cranium are basically  immovable in relationship to one  another, but due to their stable nature,  they serve to protect the brain  throughout daily life and during 
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incidents of trauma. On the other hand,  the ball-and-socket of the shoulder  enables a wide variety of complex  movements. This increase in the  amount of mobility leads to instability,  which is why the shoulder is susceptible  to injury.
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