Skip to main content

Table 3 Clinical double examinations

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

Clinical position / Axes X axis
(sternal separation)
Y axis
(proximal-distal translation)
Z axis
(anterior-posterior translation)
  Mean (SD) Mean (SD) Mean (SD)
Inspiration (n = 7) 0.09 (0.24) − 0.16 (0.30) 0.53 (0.96)
Expiration (n = 7) −0.13 (0.19) −0.40 (0.36) 1.13 (1.22)
Combined (n = 14) 0.07 (0.21) −0.55 (0.32) 0.67 (1.06)
 CR (precision) (n = 14) 0.42 mm 0.63 mm 2.08 mm
  1. Double examination results of 14 patient sterni recorded 6 weeks postoperative during inspiration and expiration (28 stereoradiographs). The mean express the change in sternal separation between inspiration and expiration, the SD express the clinical variation, and the CR (coefficient of repeatability = 1.96 x SDdiff) express the clinical precision of individual RSA for measurements of sternal instability