A New Automated Way to Measure Polyethylene Wear in THA Using a High Resolution CT Scanner: Method and Analysis

Table 2

Acetabular cup and head diameter measurements (the mean and median were quite close) based on experimental results and physical measurements.

Component	Diameter (mm)	Coefficient of variation	99% Confidence interval (mm)		Measured (mm)
	Mean (±SD)		Lower	Upper
Acetabular cup	54.22 (±0.011)	0.024	54.226	54.234	54.855^a
Femoral head	22.09 (±0.02)	0.14	22.09	22.11	22.10 (±0.01)^b

aCCM, bCalipers.