Table 1.

Demographic and fracture characteristics between injury patterns

	Deltoid competent (bimalleolar), n = 20	Deltoid incompetent (trimalleolar equivalent), n = 13	p value
Age mean (SD)	47.0 (14.4)	48.9 (15.6)	0.842
BMI (kg/m2) mean (SD)	29.6 (7.3)	27.2 (5.2)	0.518
Female n (%)	8 (40)	5 (38.5)	0.930
PM area (% of plafond)a mean (SD)	16.7 (5.4)	14.1 (3.5)	0.052
PM buttress plate n (%)	16 (80)	11 (84.5)	0.715
Dislocated n (%)	0 (0)	5 (38.5)	0.003
Open fracture n (%)	0 (0)	1 (7.7)	0.208

The italicized numbers in the p value column indicate statistical significance

^aPercent of tibial plafond affected by posterior malleolar fracture

PM posterior malleolus, BMI body mass index