Calibration Markers for Digital Templating in Total Hip Arthroplasty.

ABSTRACT: Digital templating with external calibration markers is the standard method for planning total hip arthroplasty. We determined the geometrical basis of the magnification effect, compared magnification with external and internal calibration markers, and examined the influence on magnification of the position of the calibration markers, patient weight, and body mass index (BMI). A formula was derived to calculate magnification with internal and external calibration markers, informed by 100 digital radiographs of the pelvis. Intraclass correlations between the measured and calculated values and the strength of relationships between magnification, position and distance of calibration markers and height, weight, and BMI were sought. There was a weak correlation between magnification of internal

SUBMITTER: Boese CK 

PROVIDER: S-EPMC4500467 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature