Comparison of the success rate after debridement, antibiotics and implant retention (DAIR) for periprosthetic joint infection among patients with or without a sinus tract

Table 2 Further treatment after the failed debridement, antibiotics and implant retention (DAIR) in the sinus tract group and non-sinus tract group

Further treatment^a	Sinus tract		Non-sinus tract
Further treatment^a	Total (n = 19)	Success^b 7 (36.8%)	Total (n = 15)	Success^b 10 (66.7%)
Suppressive antibiotic therapy	5 (26.3%)	–	3 (20.0%)	–
Multiple DAIR	6 (31.6%)	3 (50.0%)	1 (6.7%)	1(100.0%)
One-stage exchange revision	3 (15.8%)	2 (66.7%)	0 (0.0%)	–
Two-stage exchange revision	5 (26.3%)	2 (40.0%) ^c	11 (73.3%)	9 (81.8%)

^aData are presented as numbers of patients (percentages); ^b The percentages indicate the proportion of patients who have infection control after the corresponding treatments; ^c Another two patients have finished successful spacer implantation and are waiting for the two-stage revision

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