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Manuel Sotelo
01-14-2001, 12:17 AM
The fibula helps in the movement of the talus. This bone is wider in the front, thus when walking the join (mortise type) "opens and close" a bit to mantain the mortise
Regards
Manuel Sotelo
----- Original Message -----
From: ialdous
To: BIOMCH-L@NIC.SURFNET.NL
Sent: Saturday, January 13, 2001 11:49 AM
Subject: Re: What does the fibula do?


Hi Bimchers!

I am puzzled as to why we have two bones in our lower leg. Is this for
rotation similar to the radius-ulna design in the forearm or some other
reason? We don't seem to be able to rotate the lower leg with the same range
of motion as our forearm. What is the evolutionary history behind the two bone
design in the lower leg?
Are two bones really better than one?
Your thoughts are welcomed and encouraged.

Ian Aldous
Dept. Biomedical Engineering
Dalhousie University
ialdous@is2.dal.ca

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