Two-stage revision arthroplasty for coagulase-negative staphylococcal periprosthetic joint infection of the hip and knee

Table 1 General patient characteristics

	Hip	Knee	Total
Number of patients	29	15	44
Mean age	66	64	66
Gender, female	15	11	26
Mean BMI	27	30	28
BMI > 30, patients	8	9	17
Indication for primary prosthesis
Osteoarthritis	19	15	34
Posttraumatic	10	0	10
Comorbidity
Immune suppression	3	2	5
Previous PJI	2	5	7
Diabetes mellitus	5	3	8
Obesity, BMI > 30	8	9	17
Active smoking	7	4	11
ASA 1/2/3	1/18/10	1/11/3	2/29/13

BMI: Body mass index; PJI: Periprosthetic joint infection; ASA: American Society of Anaesthesiologist score.