HomeAnswersOrthopedician and Traumatologysesamoid boneCan extra bone be present on one side of both legs?

What is the reason for an extra bone on one side of both the legs?

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The following is an actual conversation between an iCliniq user and a doctor that has been reviewed and published as a Premium Q&A.

Answered by

Dr. Sumit Chawla

Medically reviewed by

iCliniq medical review team

Published At September 8, 2016
Reviewed AtJuly 26, 2023

Patient's Query

Hi doctor,

I am an 18-year-old male. My brother and I seem to have an extra bone on one side of both legs. I had this from my childhood, but there is no unique pain in it. Recently, I found that other people do not have that extra bone. Here is the picture for your reference. May I know the reason for this? Please explain.

Answered by Dr. Sumit Chawla

Hi,

Welcome to icliniq.com.

The extra bone is a sesamoid bone called fabella or cyamella. These sesamoid bones are normal anatomical variants. They are nonfunctional in humans. They do not cause any symptoms unless there is a fracture or constant irritation of the region by external pressure causing sore or bursitis formation.

Thank you.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Sumit Chawla
Dr. Sumit Chawla

Orthopedician and Traumatology

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