Table 4. Comparison between the Supine and Lateral-position Approach.

Variable	Supine-position HAs (n=46, 23.7%)	Lateral-position HAs (n=148, 76.3%)	P-value
Operation duration (min)	72.4±27.5	64.3±19.2	<0.05
Blood loss (g)	213±201	118±93	<0.01
LLD (mm)	5.3±5.5	2.6±5.3	<0.01
Varus angle (°)	0.7±2.1	0±1.3	<0.01
Intra-operative fractures	8 (17.4)	3 ( 2.0)	<0.01
Dislocations	2 ( 4.3)	1 ( 0.7)	0.14

Values are presented as mean±standard deviation or number (%).

HA: hemi-arthroplasty, LLD: limb length discrepancy.