Comparison of fixed-flexion positioning with fluoroscopic semi-flexed positioning for quantifying radiographic joint-space width in the knee: test-retest reproducibility.
Skeletal Radiol. 2003 Mar;32(3):128-32. doi: 10.1007/s00256-002-0603-z. Epub 2003 Feb 6.
Skeletal Radiol. 2003.
PMID: 12605275