Table 1. Comparison of shape similarity between reconstructions generated from complete magnetic resonance imaging segmentations and sparse anatomical landmarks.

	Jaccard index		P-value	RMSE (mm)		P-value	Hausdorff distance (mm)		P-value
	Complete segmentation	Sparse landmarks		Complete segmentation	Sparse landmarks		Complete segmentation	Sparse landmarks
First metatarsal	0.82 (0.05)	0.79 (0.06)	<0.01*	1.02 (0.26)	1.21 (0.55)	<0.01*	3.08 (1.04)	3.21 (0.94)	0.55
Midfoot	0.77 (0.04)	0.67 (0.06)	<0.01*	1.07 (0.14)	1.45 (0.30)	<0.01*	6.63 (3.68)	7.19 (3.54)	0.03*
Calcaneus	0.87 (0.03)	0.83 (0.05)	<0.01*	1.28 (0.25)	1.66 (0.41)	<0.01*	4.89 (1.91)	5.55 (1.73)	0.03*

Notes:

All values are mean (standard deviation).

RMSE—root mean square error; the midfoot segment includes the second-to-fifth metatarsals, cuneiforms (medial, intermediate, and lateral), cuboid, and navicular.

^*Denotes significant differences in shape similarity between reconstructions generated from complete segmentations and sparse anatomical landmarks using a Wilcoxon Signed-Ranks test.