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Larval therapy for leg ulcers (VenUS II): randomised controlled trial
Jo C Dumville1, Gill Worthy, J Martin Bland
1Department of Health Sciences, University of York, York YO10 5DD, UK. jd34@york.ac.uk
BMJ (Clinical Research Ed.)
|March 24, 2009
Summary
Larval therapy for leg ulcers did not improve healing rates compared to hydrogel but significantly reduced debridement time. However, larval therapy increased ulcer-related pain for patients.
Area of Science:
- Wound healing research
- Biomedical engineering
- Clinical trial methodology
Background:
- Leg ulcers with slough or necrosis present a significant clinical challenge.
- Standard debridement techniques, such as hydrogel, are commonly used.
- Larval therapy offers an alternative debridement method.
Purpose of the Study:
- To compare the clinical effectiveness of larval therapy versus hydrogel for debriding sloughy or necrotic leg ulcers.
- To evaluate the impact on ulcer healing rates, debridement time, and patient-reported outcomes.
Main Methods:
- A pragmatic, three-arm randomized controlled trial involving 267 patients with leg ulcers.
- Interventions included loose larvae, bagged larvae, and hydrogel.
- Primary outcome: time to ulcer healing. Secondary outcomes: debridement time, quality of life, bacterial load, and pain.
Main Results:
- No significant difference in time to healing between larval therapy and hydrogel (HR 1.13, P=0.54).
- Larval therapy significantly reduced time to debridement (P<0.001).
- Increased ulcer-related pain was reported in larval therapy groups compared to hydrogel (P<0.001).
Conclusions:
- Larval therapy is not superior to hydrogel for improving leg ulcer healing rates or reducing bacterial load.
- Larval therapy effectively accelerates debridement but is associated with increased patient pain.
- Further research may explore pain management strategies for larval therapy.
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