Equine wound care updates sharpen focus on topical therapy choices

A new VETgirl equine continuing education webinar is putting the spotlight back on a stubborn clinical problem: how to choose topical therapies for horse wounds without slowing healing or missing a deeper issue. In the July 2, 2025 program, equine surgeon Holly A. Roessner, DACVS-LA, reviewed wound-healing phases, how to judge whether healing is on track, and how to select topical therapy appropriately. That message aligns closely with longstanding field guidance from Vet Times, which notes that equine wounds are among the most difficult problems in practice and resist one-size-fits-all treatment plans. (vetgirlontherun.com)

That caution reflects the biology of equine wounds. Rendle’s review notes that wound size can underestimate severity, that small punctures may involve synovial or other critical structures, and that distal limb wounds are especially prone to delayed healing. The article also stresses the need for full examination, safe restraint, and imaging when deeper tissue involvement is suspected. In other words, topical choice matters, but only after clinicians have classified the wound correctly and ruled out complications that can change prognosis entirely. (vettimes.com)

The broader evidence base supports a more selective approach to topical products than many pet parents may expect. BEVA primary care clinical guidelines for wound management in the horse recommend considering tap water rather than saline for lavage, using povidone iodine lavage for contaminated wounds, and recognizing that topical silver sulfadiazine may not be suitable for acute wounds. The same guidance suggests honey may reduce the duration of some phases of healing. That’s important because silver-based products are still commonly used in the field, even though expert commentary aimed at horse caretakers has warned that some silver products can be cytotoxic and may not be appropriate for all wounds. (pubmed.ncbi.nlm.nih.gov)

Recent research adds another wrinkle: the base formulation itself may influence healing. A 2023 study in an experimental equine distal limb wound model found that an 80% propylene glycol gel slowed wound healing rates compared with untreated controls, while final day-42 outcomes were considered similar. The authors said the findings highlight the need for stringent experimental controls because carrier formulations are often assumed to have little biological effect. For clinicians, that’s a useful reminder that “inactive” vehicles aren’t always clinically neutral. (pubmed.ncbi.nlm.nih.gov)

Industry and expert attention is also shifting toward chronic wounds and biofilms. AAEP promoted a 2025 roundtable on biofilm-based wound care strategies, noting that recognition of biofilms in persistent equine wounds is increasing and that practitioners need better ways to identify and manage wounds that fail to progress through contraction and epithelialization. That doesn’t amount to a new consensus standard on its own, but it does suggest where continuing education and clinical discussion are heading. (aaep.org)

Why it matters: For equine veterinarians, the practical message is that topical therapy should be framed as part of wound strategy, not wound strategy itself. Cases still hinge on triage, lavage, debridement, bandaging, moisture control, tetanus status, imaging when indicated, and frequent reassessment. The educational value of the VETgirl and Vet Times pieces is that they reinforce disciplined decision-making in an area where pet parents may arrive with strong expectations about creams, sprays, honey, silver products, or over-the-counter antiseptics. The evidence reviewed here suggests clinicians may need to explain not just what they’re using, but why they’re avoiding certain products in certain phases of healing. (vetgirlontherun.com)

What to watch: The next phase of this conversation will likely center on chronic, non-healing wounds, especially biofilm management, dressing selection, and whether newer topical formulations can improve outcomes without adding cytotoxicity or delaying epithelialization. Continuing education programs from groups like VETgirl and AAEP suggest that equine wound care remains an active area of clinical refinement rather than a settled protocol. (vetgirlontherun.com)