Negative pressure wound therapy after partial diabetic foot amputation: a multicentre, randomised controlled trial

Area of Science:

• Diabetic wound management
• Regenerative medicine
• Clinical trial research

Background:

• Diabetic foot wounds, especially post-amputation, present significant treatment challenges.
• Effective therapies are crucial to improve healing outcomes and reduce complications.

Purpose of the Study:

• To evaluate the efficacy of negative pressure wound therapy (NPWT) in enhancing wound healing after partial foot amputation in diabetic patients.
• To compare NPWT with standard moist wound care for diabetic foot wounds.

Main Methods:

• A randomized clinical trial involving 162 diabetic patients with partial foot amputation wounds.
• Patients received either NPWT (Vacuum Assisted Closure - VAC Therapy System) or standard moist wound care for up to 16 weeks.
• Intention-to-treat analysis was performed on data from 18 centers in the USA.

Main Results:

• A higher proportion of patients achieved wound healing in the NPWT group (56%) compared to the control group (39%, p=0.040).
• The rate of complete wound closure was significantly faster with NPWT (p=0.005).
• Granulation tissue formation was also accelerated in the NPWT group (p=0.002), with similar adverse event rates between groups.

Conclusions:

• Negative pressure wound therapy (NPWT) using the VAC Therapy System demonstrates safety and effectiveness for complex diabetic foot wounds.
• NPWT offers potential for increased healing proportions, accelerated healing rates, and possibly reduced re-amputation rates compared to standard care.