*2.1.4 Negative therapy wound pressure*

Another increasingly popular technique for treating diabetic foot ulcers involves targeted negative pressure wound therapy, which basically involves draining wound fluid through a vacuum seal. In comparison to treating ulcers with a typical gauze dressing, this often involves a shorter treatment period and is intended to improve the perfusion of tissues and encourage the creation of granulation tissue. However, there is no found statistically significant difference (p 1/4 0.15) in the amount of time needed for wound closure between negative pressure wound therapy and the usual wound care from a Canadian evidence-based study [28].
