Bacterial recolonization during foot surgery: a prospective randomized study of toe preparation techniques

Fifty patients undergoing foot or ankle surgery were randomized into two groups for the purposes of toe preparation. Twenty-four patients underwent a standard preparation which included placing antiseptic between the toes while 26 were additionally cleaned by sliding a gauze swab soaked in topical antiseptic back and forth several times. Povidone iodine followed by chlorhexidine in alcohol was used in both groups. All toes were covered by a sterile glove during surgery unless the toes themselves were to be operated upon. Bacteria were cultured from the toe clefts in 4% of all patients immediately following preoperative disinfection. Significantly fewer patients whose toes had been additionally scrubbed (group 1) showed bacterial recolonization at the end of surgery compared with those undergoing a standard prep (group 2) (7.7% vs 20.8%). We conclude that additional scrubbing of toe clefts prior to surgery reduces the incidence of recolonization of bacteria during the surgical procedure.