The proper timing of second-stage revision in treating periprosthetic knee infection: reliable indicators and risk factors

Table 3 Information of failed second-stage revisions

Number	Gender	Age	BMI	Diagnosis	Pathogen	Spacer retention period (weeks)	Failed details	Ending
4	Male	67	22.4	OA	MRSE	24	Sinus recurrence 9 months after spacer implanted	Three spacer implantations, one I&D, infection controlled.
16	Male	75	17.8	OA	MRSA	12	Sinus recurrence 6 months after prosthesis implanted	Two I&D and insert exchange, fusion
18	Female	65	27.7	OA	Enterococcus faecalis	12	Reinfection 39 months after new prosthesis implanted	Another one-stage revision, infection controlled
23	Female	56	26.6	OA	Group G Streptococcus	24	Infection persist 2 months after spacer implanted	Two spacer implantation, Two I&D and insert exchange, infection controlled
29	Female	63	23.9	RA	Candida albicans	48	Infection persist 16 months after spacer implanted	Two spacer implantation, infection controlled
30	Female	59	28.9	OA	MRSE	20	Reinfection 24 months after prosthesis implanted	Another one-stage revision, infection controlled
32	Male	64	22.5	OA	NTM	24	Infection persist 9 months after spacer implanted	Three spacer implantations, infection controlled.
35	Female	58	31.3	OA	Candida albicans	40	Sinus recurrence 6 months after prosthesis implanted	One I&D and insert exchange, infection controlled
37	Male	63	34.3	OA	NTM	24	Infection persist 10 months after spacer implanted	Three time spacer implantations, infection controlled
57	Male	54	28.7	OA	Candida parapsilosis	16	Reinfection 4 months after prosthesis implanted	One I&D and insert exchange, infection controlled

MRSA methicillin-resistant Staphylococcus aureus, MRSE methicillin-resistant Staphylococcus epidermidis, NTM non-tuberculosis mycobacterium, I&D irrigation and debridement

ISSN: 1749-799X