Knee joint space width measurement: an experimental study of the influence of radiographic procedure and joint positioning.

@article{Ravaud1996KneeJS,
  title={Knee joint space width measurement: an experimental study of the influence of radiographic procedure and joint positioning.},
  author={Philippe Ravaud and G. R. Auleley and Claude Chastang and Beno{\^i}t Rousselin and Laurence Paolozzi and B. El Hadi Amor and Maxime R Dougados},
  journal={British journal of rheumatology},
  year={1996},
  volume={35 8},
  pages={761-6}
}
We studied the influence of the radiographic procedure and joint positioning on knee joint space width (JSW) in 10 healthy volunteers, and the intrareader reproducibility of JSW measurements on radiographs performed 2 weeks apart using a standardized procedure. Results show that a 5 or 10 downward inclination of the X-ray beam and 15 or 30 of induced external foot rotation significantly reduced JSW. In contrast, knee flexion increased JSW. The mean differences and S.D. in the measurement of JSW… CONTINUE READING