Table 1

Patient demographic and clinical characteristics

Characteristic	Group; mean [range] or no.			p value
Characteristic	Anterior	Posterior	Lateral	p value
Age, yr	70.5 [62–82]	67.7 [66–74]	64.9 [58–73]	0.27
Sex, female:male	6:4	5:5	5:5	0.87
BMI	25.6 [20.0–34.1]	27.6 [19.8–33.7]	29.7 [21.2–39.8]	0.16
Age-adjusted Charlson Comorbidity Index score	3.6 [1–6]	3.1 [1–5]	2.9 [0–6]	0.66
Charnley classification
A	1	2	3
B1	5	5	6
B2	3	1	1
C	1	2	0

BMI = body mass index.