Table 1.

Demographics and baseline measurements

	Flexion group	Extension group	P value
Age (years)	73.1 ± 5.1	72.4 ± 4.6	0.68
Gender (female/male)	34/16	32/18	0.67
Affected side (L/R)	22/28	24/26	0.69
Preoperative Hb (g/dL)	13.3 ± 1.4	12.8 ± 1.7	0.34
Preoperative ROM	93.9 ± 18.9	92.3 ± 21.5	0.80

L left, R right, Hb hemoglobin, ROM range of motion