Question

Your thumb contains the only saddle joint in the entire body. How would your hand function differently if your thumb >contained a pivot joint? What if it contained a ball and socket joint? Describe four consequences of having a different type of joint in the thumb. 2-3 sentences

Answer 1

If the thumb contained a pivot joint instead of a saddle joint, the hand would not be able to move in as many directions. A pivot joint only allows for rotational movement, so the thumb would not be able to move sideways or across the palm as freely as it can with a saddle joint. On the other hand, if the thumb contained a ball and socket joint, it would have a much wider range of motion, allowing the thumb to move in all directions, including rotating and pivoting. This would significantly increase the hand's dexterity and ability to grasp objects.