Table 2 Postoperative parameters

HKA angle (goal = 0°)

4.0 (2.7)

3–5

4.1 (3.1)

2.9–5.2

0.459

CFA, α (goal = 96°)

94.5 (4.2)

93–96

95.1 (4.40)

93.5–96.7

0.298

CTA, β (goal = 90°)

89.4 (1.8)

88.8–90.1

90.2 (2.3)

89.3–91

0.091

SFA, γ (goal = 0° for conventional, 3° for PSI)

3.2 (2.5)

2.3–4.1

5.8 (3.7)

4.5–7.2

0.001

STA, ϕ (goal = 87°)

85.4 (3.3)

84.2–86.6

84.8 (4.5)

83.1–86.4

0.283

PCA (goal = 0°)

1.5 (1.6)

0.9–2.1

1.5 (1.3)

1–2

0.485

Tourniquet time (min)

40 (5.9)

37.9–42.2

46.5 (8.5)

43.4–49.6

0.001

Bleeding (ml)

150 (85.8)

118.8–181.3

162.1 (84.4)

131.4–192.8

0.296