Resting length of the ligament

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Hang Xu
Posts: 26
Joined: Wed Aug 19, 2009 10:55 pm

Resting length of the ligament

Post by Hang Xu » Fri Oct 07, 2011 10:36 am

Hi, everyone
I am interested to create the ligament in the OpenSim and one of the parameters of the ligament is the Resting length of the ligament.
What is the definition of the resting length of the ligament? Is that the zero-load length of ligament or the reference length of ligament ?
Thanks for any help.
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Ajay Seth
Posts: 136
Joined: Thu Mar 15, 2007 10:39 am

Re: Resting length of the ligament

Post by Ajay Seth » Fri Oct 07, 2011 9:51 pm

It is the length at which the ligament has zero strain.
The normalized strain = (path.length - rest_length)/rest_length;
The ligament force = force_length_curve(strain) * pcsa_force.
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Hang Xu
Posts: 26
Joined: Wed Aug 19, 2009 10:55 pm

Re: Resting length of the ligament

Post by Hang Xu » Tue Nov 15, 2011 6:30 pm

Thanks for your help :)
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