Research Article

Postoperative Management Strategy of Surgical Site Infection following Lumbar Dynesys Dynamic Internal Fixation

Table 1

Comparison of the observational indicators between Groups A and B.

Group AGroup B

Age (years)56.9 ± 18.439.8 ± 13.00.016

Surgical situationNumber of fenestration1.7 ± 1.11.7 ± 1.00.903
Number of discectomy1.1 ± 0.41.2 ± 0.60.769
Number of fixed segment2.2 ± 0.91.9 ± 0.70.323
Operation time (min)195.8 ± 81.984158.1 ± 70.70.208
Blood loss (ml)385.7 ± 293.2263.6 ± 180.40.134
Blood transfusion (ml)182.1 ± 334.9119.1 ± 210.80.809

Clinical symptomIncision exudation80
Low back pain (leg pain)47
Incision hydrops30
Red and swollen incision310.007#
Sinus tract22
Fever21
Abscess03

Inflammation indicatorWBC (×109/L)11.4 ± 3.08.2 ± 2.50.008
N (%)79.6 ± 12.368.9 ± 9.90.029
Thrombocyte (×109/L)296.7 ± 88.4222.8 ± 54.10.023
SR (mm/1 h)54.2 ± 26.834.2 ± 27.10.048
CRP (mg/L)64.9 ± 88.013.7 ± 15.80.012
Procalcitonin (ng/ml)2.5 ± 5.30.5 ± 1.00.639

Pathogenic bacteriaPositive rate8/14 (57.1%)3/11 (27.2%)0.467#

Main infection siteSkin and subcutaneous tissue900.001#
Around internal instrument310
Spinal canal11
Intervertebral space10

Main treatmentMere antibiotics200.001#
Puncture (irrigation)12
Debridement81
Implant replacement20
Implant removal18

Mann-Whitney test; #Fisher’s exact test.