Table 1.

The values of MFA, SAP, and MFH in three fracture types

Fracture type	MFA (n = 4, degrees)	SAP (n = 36, %)	MFH (n = 32, mm)
Anteromedial fracture	47.5 ± 7.1	38.3 ± 10.4	41.3 ± 6.3
Total medial fracture	81.2 ± 6.9a,b	53.9 ± 10.9a,b	64.0 ± 19.5a,b
Posteromedial fracture	42.5 ± 11.2	32.4 ± 9.2	44.8 ± 10.5

MFA major fracture angle, SAP surface area percentage, MFH medial fragment height

Data was expressed as mean ± SD. Three pure medial depression fractures in the anteromedial fracture group were excluded in statistical analysis. To eliminate the impact of fracture direction (positive or negative), absolute values were adopted to compare the differences of MFA in the three fracture types

^aP < 0.05, when compared to anteromedial fracture

^bP < 0.05, when compared to posteromedial fracture