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Table 6 Follow-up outcomes

From: Analgesic effect of single-shot ropivacaine at different layers of the surgical site in primary total hip arthroplasty: a randomised, controlled, observer-blinded study

Variables

Group A (n = 40)

Group B (n = 40)

Group C (n = 39)

P values

Resting VAS

 2 weeks

0.2 ± 0.4

0.2 ± 0.4

0.3 ± 0.4

0.839

 3 months

0.1 ± 0.3

0.1 ± 0.3

0.1 ± 0.3

0.999

 6 months

0.1 ± 0.3

0.1 ± 0.2

0.1 ± 0.3

0.704

Movement VAS

 2 weeks

1.2 ± 0.4

1.2 ± 0.4

1.3 ± 0.4

0.932

 3 months

0.7 ± 0.7

0.7 ± 0.6

0.7 ± 0.7

0.991

 6 months

0.6 ± 0.6

0.5 ± 0.6

0.6 ± 0.6

0.578

HOOS-3 months

 Symptoms

16.6 ± 1.2

16.3 ± 1.1

16.1 ± 1.1

0.244

 Pain

31.1 ± 1.6

30.9 ± 1.5

30.5 ± 1.7

0.238

 Daily living

60.9 ± 1.7

61.3 ± 1.9

60.7 ± 1.7

0.420

 Sports and recreational activities

12.0 ± 1.5

12.5 ± 1.4

11.9 ± 1.4

0.153

 Quality of life

11.8 ± 1.3

12.0 ± 1.3

11.7 ± 1.2

0.455

HHS-3 months

89.1 ± 2.2

88.7 ± 2.3

88.2 ± 2.1

0.213

SF-12-3 months

 PCS

22.3 ± 1.1

21.8 ± 1.3

22.0 ± 1.2

0.274

 MCS

26.1 ± 1.3

26.0 ± 1.3

25.9 ± 1.4

0.737

HOOS-6 months

 Symptoms

16.9 ± 0.9

17.1 ± 0.8

16.9 ± 0.8

0.467

 Pain

34.2 ± 1.8

33.9 ± 1.4

33.6 ± 1.3

0.336

 Daily living

63.5 ± 1.4

63.1 ± 1.7

63.1 ± 1.5

0.396

 Sports and recreational activities

13.0 ± 1.0

13.0 ± 1.1

12.7 ± 1.1

0.301

 Quality of life

13.0 ± 1.1

12.9 ± 1.0

12.6 ± 0.7

0.193

HHS-6 months

92.1 ± 1.9

92.6 ± 2.2

92.0 ± 2.0

0.285

SF-12-6 months

 PCS

23.2 ± 1.1

23.3 ± 1.0

23.0 ± 0.8

0.291

 MCS

27.0 ± 0.9

27.4 ± 1.1

27.0 ± 0.9

0.092

  1. Values are the mean ± SD
  2. HHS Harris Hip Score; HOOS Hip Disability and Osteoarthritis Outcome; PCS physical component summary; MCS mental component summary
  3. From one-way analysis of variance for independent means for continuous variables amongst the three groups