Table 4 Postoperative patient data regarding block duration, pain scores and postoperative analgesic requirements for study 2

Duration of analgesia, h

13.0 (8.5–14.0)

20.0 (16.8–22.5)*

22.5 (15.3–33.4)*

Duration of motor blockade, h

13.0 (10.0–15.5)

17.0 (9.0–21.0)*

20.8 (17.6–25.1)*

VAS at rest, mm

  18 h

36 (21–56)

26 (3–43)

33 (23–46)

  24 h

21 (18–59)

29 (13–70)

38 (8–66)

  48 h

14 (0–27)

20 (6–29)

17 (11–32)

VAS on movement, mm

  18 h

73 (60–90)

29 (3–49)*

43 (23–67)

  24 h

65 (44–82)

40 (17–70)

52 (16–76)

  48 h

52 (34–64)

80 (35–80)

42 (35–68)

Worst VAS within 48 h, mm

82 (62–100)

80 (55–82)

74 (54–93)

  PCA, time

  0–24 h

10 (6–14)

2 (1–10)

3 (0–3)*

  24–48 h

4 (0–5)

6 (0–13)

4 (0–6)

Rescue analgesics required, time

  0–24 h

3 (1–5)

1 (0–3)*

1 (0–3)

  24–48 h

2 (1–4)

2 (1–3)

2 (1–2)