Retrospective Cohort Study
Copyright ©The Author(s) 2022.
World J Orthop. Oct 18, 2022; 13(10): 903-910
Published online Oct 18, 2022. doi: 10.5312/wjo.v13.i10.903
Table 1 Patients’ characteristics according to periprosthetic joint infection
Covariate
Infection (yes)
Infection (not)
P value
Age, mean (min-max)62.8 (51-69)62.8 (17-88)P = 0.98; T-test
Sex
Female (%)3 (75.0)317 (54.7)P = 0.63; Fisher’s test
Male (%)1 (25.0)262 (45.3)
BMI
Underweight (%)-4 (0.7)P = 0.455; χ2 test
Normal (%)1 (25.0)208 (36.0)
Overweight (%)1 (25.0)259 (44.8)
Obese (%)2 (50.0)107 (18.5)
Antibiotic therapy
Cefazolin (%)4 (100.0)560 (96.9)P = 1.00; Fisher’s test
Clindamycin (%)-18 (3.1)
Additional antibiotic doses
Yes (%)1 (25.0)20 (3.5)P = 0.137; Fisher’s test
Not (%)3 (75.0)559 (96.5)
Diagnosis
Coxartrosis (%)3 (75.0)370 (97.6)P = 1.00; Fisher’s test
Dysplasia (%)1 (25.0)9 (2.4)
Bearings
Cer-cer (%)4 (100.0)522 (90.2)P = 0.001; χ2 test
Cer-pol (%)-8 (1.4)
Met-pol (%)-49 (8.5)
Steroid
Yes (%)1 (25.0)14 (2.4)P = 0.1; Fisher’s test
Not (%)3 (75.0)562 (97.6)
Immunosuppressants
Yes (%)-13 (2.3)P = 0.1; Fisher’s test
Not (%)4 (100.0)564 (97.7)
Antiaggregant drugs
Yes (%)1 (25.0)116 (20.1)P = 1.00; Fisher’s test
Not (%)3 (75.0)460 (79.9)
Local surgery before the operation
Yes (%)-66 (11.5)P = 1.00; Fisher’s test
Not (%)4 (100.0)507 (88.5)
COPD
Yes (%)-78 (13.5)P = 1.00; Fisher’s test
Not (%)4 (100.0)500 (86.5)
Chronic renal insufficiency
Yes (%)1 (25.0)20 (3.5)P = 0.137; Fisher’s test
Not (%)3 (75.0)558 (96.5)
Preexisting heart ischemic conditions
Yes (%)1 (25.0)51 (8.8)P = 0.313; Fisher’s test
Not (%)3 (75.0)527 (91.2)
Diabetes
Yes (%)-44 (7.6)P = 1.00; Fisher’s test
Not (%)4 (100.0)533 (92.4)
Rheumatological conditions
Yes (%)-12 (2.1)P = 1.00; Fisher’s test
Not (%)4 (100.0)565 (97.9)
Previously local septic conditions
Yes (%)-6 (1.0)P = 1.00; Fisher’s test
Not (%)4 (100.0)571 (99.1)
Blood transfusion
Yes (%)1 (25.0)98 (16.9)P = 1.00; Fisher’s test
Not (%)3 (75.0)468 (80.8)
Prosthesis fixation
Uncemented (%)4 (100.0)570 (98.4)P = 1.00; Fisher’s test
Cemented stem and uncemented cup (%)-9 (1.6)
Time of intervention
(07-12) (%)4 (100.0)442 (76.3)P = 0.578; Fisher’s test
(12-19) (%)0137 (23.7)