. 2008 Dec 15;10(6):R143. doi: 10.1186/ar2573

Table 3.

Relationship between distal vastus medialis and vastus lateralis cross-sectional areas and patella structures

	Univariate regression coefficient (95% CI)	Multivariate regression coefficient (95% CI)	R²for model
Vastus medialis cross-sectional area, mm²
Patella cartilage volume, mm³	1.5 (1.3, 1.8)^a	0.58 (0.23, 0.94)^a	0.472^b
Patella bone volume, mm³	9.09 (7.69, 10.50)^a	3.04 (1.40, 4.68)^a	0.592^c
Vastus lateralis cross-sectional area, mm²
Patella cartilage volume, mm³	1.67 (0.89, 2.44)^a	-0.33 (-0.99, 0.33)	0.455^b
Patella bone volume, mm³	10.3 (6.19, 14.31)^a	-1.31 (-4.40, 1.78)	0.574^c

^aP < 0.01. ^bAge, gender, body mass index, and participation in vigorous physical activity and patella cartilage volume included in the multivariate regression equation. ^cAge, gender, body mass index, and participation in vigorous physical activity and patella bone volume included in the multivariate regression equation. CI, confidence interval.