Daisuke Furukawa Takayuki Kitasaka Kensaku Mori Yasuhito Suenaga Kenji Mase Tomoichi Takahashi Human Spine Posture Estimation Method from Human Images to Calculate Physical Forces Working on Vertebrae. 302-310 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3217&spage=302 2004 conf/miccai/2004-2 MICCAI (2) db/conf/miccai/miccai2004-2.html#FurukawaKMSMT04