Skip to main content

Table 2 Post-surgical clinical data and rehabilitation milestones in LIA and SNB patients

From: Local infiltration of analgesia and sciatic nerve block provide similar pain relief after total knee arthroplasty

Variables LIA group (n = 41) SNB group (n = 38) P value
Passive knee flexion angle (degrees)
 POD 7 108 ± 13 104 ± 14 0.150
 POD 14 119 ± 12 116 ± 12 0.337
 POD 21 123 ± 12 123 ± 8 0.978
C-reactive protein level (mg/dl)
 POD 1 1.39 ± 0.71 3.77 ± 1.78 <0.001*
 POD 3 12.14 ± 5.22 15.47 ± 4.20 0.006*
 POD 7 5.53 ± 7.02 6.13 ± 8.68 0.762
 POD 14 1.19 ± 1.42 1.26 ± 0.99 0.841
Time to achieve rehabilitation milestones (days)
 Ambulation with a walker 2.0 (2.0-3.0) 2.0 (1.25–3.0) 0.648
 Straight leg raise 3.0 (3.0–4.0) 3.0 (3.0–4.0) 0.821
 Ambulation with a cane 9.0 (7.0–11.5) 8.0 (7.0–10.0) 0.818
 Stairs with a rail 11.0 (9.0–17.0) 12.0 (9.0–16.25) 0.886
Length of hospital stay (days) 24.0 (20.0–32.0) 24.0 (22.0–30.0) 0.738
Knee Society Score (function)
 Before surgery 39.2 ± 25.2 41.9 ± 28.2 0.624
 At discharge 49.3 ± 16.2 51.6 ± 14.1 0.791
Knee Society Score (knee)
 Before surgery 44.9 ± 13.7 47.5 ± 17.5 0.661
 At discharge 83.9 ± 10.0 84.9 ± 11.8 0.325
Induction time (min) 54.1 ± 6.4 61.0 ± 8.5 <0.001*
Surgical time (min) 73.5 ± 15.6 69.5 ± 13.1 0.215
Time of motor block in toe motion (h) 1.5 ± 4.4 6.7 ± 4.8 <0.001*
Requirement of diclofenac (mg) 0 (0–25) 0 (0–50) 0.159
Adverse effects
 Nausea or vomiting (%) 5 (12.2) 7 (18.4) 0.444
 Symptoms of local anesthetic poisoning (%) 0 (0) 0 (0) 1.00
  1. Data are presented as absolute number (percentage), median (interquartile range), or mean (SD) as appropriate for the variables and compared by Mann-Whitney U test or chi-square test. * Statistically significant P < 0.05. LIA local infiltration of analgesia, SNB sciatic nerve block, POD post-operative day