Maggot therapy in horses with traumatic wounds caused by wire fences: Case reports.

Overview

• This study explores the use of maggot therapy as a treatment for horses suffering from traumatic wounds caused by wire fences, demonstrating its effectiveness in wound healing and infection control in complex equine injuries.

Background

• Traumatic wounds from wire fences are common in horses and often complicated by infection, tissue death (necrosis), and slow healing.
• Traditional treatments can be challenging due to ongoing infection and difficulty in wound management.
• Maggot therapy, which involves the application of sterile fly larvae to wounds, has re-emerged as an innovative method for selective removal of dead tissue and enhancing tissue regeneration.

Aims and Objectives

• The study aimed to document the clinical outcomes of treating horses’ wire fence wounds using sterile Lucilia cuprina larvae.
• Focus was on assessing wound healing, reduction in infection signs, and tissue regeneration following maggot therapy.

Methods

• Four horses (three mares and one gelding), aged between 4 to 6 years, with limb wounds caused by wire fences, were selected.
• Approximately 1,000 sterile Lucilia cuprina larvae at the first instar (L1) stage were applied directly onto the wounds.
• The larvae were left on the wounds for 48 hours either in veterinary clinics or under field conditions in southern Brazil.
• Wound healing progress was evaluated by observing reduction in necrotic tissue, drainage of pus (purulent exudate), smell, and the formation of new granulation tissue.

Results

• Maggot therapy led to complete removal of dead tissue in all treated horses.
• Purulent discharge and unpleasant odor were eliminated post-treatment, indicating the control of infection.
• In three of the four cases, granulation tissue—an essential part of the healing process—began developing within 48 hours of treatment.
• Complete wound closure was achieved between 10 and 60 days after maggot therapy, showing the effectiveness in promoting healing over a broad timeline.
• No adverse effects or damage to surrounding healthy tissues were observed during or after treatment.

Conclusions

• The study demonstrated that maggot therapy using sterile Lucilia cuprina larvae is a safe and effective adjunctive treatment for complicated wire fence wounds in horses.
• The approach promotes rapid debridement (removal of dead or infected tissue), controls infection, and stimulates granulation tissue formation, all critical factors for wound healing.
• Maggot therapy offers a low-cost alternative that can be applied both in clinical settings and under field conditions.
• These findings support the broader use of maggot therapy in veterinary wound care, particularly for equine patients with challenging traumatic injuries.