TABLE 2

Validation of DXA Lower Extremity Alignment Measurements

MeasurementCorrelation CoefficientMean, degreesSDCoefficient of Variation, %
InterobserverIntraobserverInterobserverIntraobserverInterobserverIntraobserverInterobserverIntraobserver
Right MDA0.879a0.748a−7.7−8.91.41.718.719.6
Left MDA0.892a0.862a−7.4−8.31.61.521.318.2
Right A-TFA0.938a0.911a−11.3−12.01.51.312.911.2
Left A-TFA0.971a0.978a−10.1−10.31.31.012.79.5
  • MDA and A-TFA from right and left lower extremities, measured in a blinded manner twice, either by the same investigator both times (intraobserver) or by two investigators (interobserver).

  • a P < .01, N = 19.