@misc{indiciae6d218c97383b,
  title = {External knee joint design based on normal motion.},
  author = {P S Walker and H Kurosawa and J S Rovick and R A Zimmerman},
  year = {1985},
  doi = {10.1682/jrrd.1985.01.0009},
  url = {https://pubmed.ncbi.nlm.nih.gov/4009509/},
  note = {Source identifier: 4009509}
}