Clinical Study

The Influence of Tribological Pairings and Other Factors on Migration Patterns of Short Stems in Total Hip Arthroplasty

Table 2

RSA parameters and equipment used during image acquisition and analysis.

ParameterValue

Precision of arrangement: Valid for METHA
Translation (, , ) : , : , :
Rotation (, , ): , : , :
Calibration cageCarbon Box Leiden 10 Hannover
X-ray tubes2x SRO3310 ROT 360 (Philips)
Tube voltage/current90 kV/12.5 mAs
Angle between X-ray paths40 deg
X-ray cassette36 × 43 cm IP Cassette Type CC (Fuji)
Cassette digitizerPCR Eleva Corado (Philips), resolution: 125 dpi
Condition number cut-off threshold120
Mean rigid body error threshold0.35 mm
RSA software versionMedis Specials Model Based RSA 3.2/3.31