Patient selection: arthroplasty of knee or hip
Risk factors after a primary arthroplasty:
(1) rheumatoid arthritis
(2) diabetes mellitus
(3) malnutrition (poor nutritional status)
(4) concurrent urinary tract infection
(5) steroid therapy
(6) malignancy
(7) postoperative surgical site infection
(8) National Nosocomial Infection Surveillance (NNIS) Score 1 to 3 (one or more of the following: (a) ASA 3 to 5, (b) prolonged operating room time, (c) contaminated or dirty)
Risk factors after a revision arthroplasty done because of infection:
(1) previous joint surgery
(2) prolonged operating room time
(3) concurrent dental infection
(4) concurrent infection of skin
(5) concurrent urinary tract infection (UTI)
where:
• I am not sure if "previous joint surgery" indicates that any revision is at greater risk (you cannot do a revision without a previous surgery) or else that more than one previous surgery was done.
