thanks IceBreaker,
yes i did it, i got ct scan and now i have all contours for cortical bone external and internal and i have also for sponge bone but i haven't any knowledge how i transfer this contours to solid part. but some friends told me to use rhinoceros to transform this contours to solid part but i tried a lot but i failed
do you know any way to do it in rhinoceros or another program ?
thanks
best regards
shady