How many interphalangeal joints are in one lower extremity?

Name: How many interphalangeal joints are in one lower extremity?
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Question

Quizplus · Accepted Answer

There are 9 interphalangeal joints in one lower extremity. The interphalangeal joints are the joints between the phalanges (bones of the fingers and toes). There are 5 toes on each foot, and each toe has 3 phalanges (proximal, middle, and distal). Therefore, there are 5 x 3 = 15 interphalangeal joints in one lower extremity.

How Many Interphalangeal Joints Are in One Lower Extremity