<s>
OpenSim	B-Application
is	O
an	O
open	B-Application
source	I-Application
software	I-Application
system	O
for	O
biomechanical	O
modeling	O
,	O
simulation	O
and	O
analysis	O
.	O
</s>
<s>
OpenSim	B-Application
enables	O
a	O
wide	O
range	O
of	O
studies	O
,	O
including	O
analysis	O
of	O
walking	O
dynamics	O
,	O
studies	O
of	O
sports	O
performance	O
,	O
simulations	O
of	O
surgical	O
procedures	O
,	O
analysis	O
of	O
joint	O
loads	O
,	O
design	O
of	O
medical	O
devices	O
,	O
and	O
animation	O
of	O
human	O
and	O
animal	O
movement	O
.	O
</s>
<s>
OpenSim	B-Application
is	O
used	O
in	O
hundreds	O
of	O
biomechanics	O
laboratories	O
around	O
the	O
world	O
to	O
study	O
movement	O
and	O
has	O
a	O
community	O
of	O
software	O
developers	O
contributing	O
new	O
features	O
.	O
</s>
<s>
OpenSim	B-Application
is	O
one	O
of	O
the	O
flagship	O
applications	O
from	O
Simbios	O
,	O
a	O
NIH	O
Center	O
for	O
Biomedical	O
Computation	O
at	O
Stanford	O
University	O
.	O
</s>
<s>
OpenSim	B-Application
was	O
designed	O
to	O
propel	O
biomechanics	O
research	O
by	O
providing	O
a	O
common	O
framework	O
for	O
investigation	O
and	O
a	O
vehicle	O
for	O
exchanging	O
complex	O
musculoskeletal	O
models	O
.	O
</s>
<s>
OpenSim	B-Application
1.0	O
was	O
released	O
on	O
August	O
20	O
,	O
2007	O
and	O
provided	O
capabilities	O
for	O
viewing	O
musculoskeletal	O
models	O
,	O
importing	O
models	O
developed	O
in	O
SIMM	O
(	O
Musculographics	O
Inc	O
.	O
)	O
,	O
editing	O
muscle	O
paths	O
,	O
and	O
generating	O
muscle	O
actuated	O
simulations	O
that	O
track	O
experimental	O
data	O
.	O
</s>
<s>
OpenSim	B-Application
1.1	O
was	O
released	O
on	O
December	O
11	O
,	O
2007	O
,	O
which	O
added	O
new	O
features	O
such	O
as	O
user-specified	O
camera	O
positions	O
for	O
recording	O
movies	O
of	O
simulations	O
,	O
and	O
a	O
perturbation	O
(	O
sensitivity	O
)	O
analysis	O
for	O
inquiry	O
into	O
the	O
function	O
of	O
individual	O
muscles	O
.	O
</s>
<s>
OpenSim	B-Application
2.2.1	O
was	O
released	O
on	O
April	O
11	O
,	O
2011	O
.	O
</s>
<s>
OpenSim	B-Application
2.4	O
was	O
released	O
on	O
October	O
10	O
,	O
2011	O
.	O
</s>
<s>
OpenSim	B-Application
3.2	O
was	O
released	O
on	O
March	O
13	O
,	O
2014	O
.	O
</s>
<s>
This	O
update	O
focused	O
on	O
improving	O
the	O
OpenSim	B-Application
scripting	O
interface	O
,	O
accessible	O
through	O
the	O
Graphical	O
User	O
Interface	O
(	O
GUI	O
)	O
,	O
Matlab	O
,	O
and	O
now	O
Python	O
.	O
</s>
<s>
It	O
also	O
added	O
new	O
visualization	O
capabilities	O
and	O
usability	O
improvements	O
in	O
the	O
OpenSim	B-Application
application	O
.	O
</s>
