Shape Approximation and Size Difference of the Upper Part of the Talus: Implication for Implant Design of the Talar Component for Total Ankle Replacement

Table 1

The mean, standard deviation, and maximum of the distances between vertices on the talar trochlea and geometrical models of one sphere, cylinder, bitruncated cone, and two spheres.

Fitting method	Sample size	Distance (mm)
		Mean	Standard deviation (SD)	Maximum
Single sphere (Huang et al.)	50
Single cylinder (Huang et al.)	50
Bitruncated cone (Huang et al.)	50
Bitruncated cone (Kleipool et al.)-RMSE	40		N.R.	N.R.
Two spheres (current study)	90

N.R.: not reported.