Table 1 Patient characteristics and duration of surgery

Age (y)

64.20 ± 5.12

66.54 ± 6.22

0.90

M/F (n)

6/29

7/28

0.76

Height (cm)

159.60 ± 7.37

157.80 ± 6.30

0.28

Weight (kg)

70.89 ± 8.70

67.71 ± 10.17

0.17

BMI (kg/m²)

27.82 ± 2.77

27.10 ± 3.03

0.30

Duration of surgery (min)

111.00 ± 17.27

109.86 ± 16.40

0.78

VAS at rest, preoperative

4 (3–4)

3 (3–4)

0.424

VAS during active flexion, preoperative

6 (5–6)

6 (5–6)

0.534