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Table 1 Phantom precision

From: Sternal instability measured with radiostereometric analysis. A study of method feasibility, accuracy and precision

Phantom study

(n = 4 phantoms)

X-axis

(sternal separation)

Y-axis

(proximal-distal translation)

Z-axis

(anterior-posterior translation)

Sternum Meandiff (mm)

0.00

0.00

−0.07

SDdiff (mm)

0.02

0.04

0.31

  1. The combined mean difference (Meandiff) and standard deviation of differences (SDdiff) for the 3 phantom tilt positions and 4 sternal separations of the 4 phantoms. The Meandiff express systematic errors and the SDdiff express the precision of the method