TY - RPRT TI - The instantaneous hinge axis - its reproducibility and use as an indicator for dysfunction. AU - S M Lupkiewicz AU - C H Gibbs AU - P E Mahan AU - H C Lundeen AU - M Ariet AU - S L Sinkewiz PY - 1982 DO - 10.1177/00220345820610010301 UR - https://pubmed.ncbi.nlm.nih.gov/6948010/ ID - 6948010 ER -