Cardiovascular

Navigating Treatment Pathways in Diabetic Foot Infection: A Practical Retrospective Analysis of Healing Predictors and the WIfI System.

TL;DR

In this retrospective study of 69 patients with diabetic foot infection at a tertiary centre, wound grade was the only independent predictor of healing time, and limb-preserving management was associated with a low major amputation rate.

Key Findings

Most wounds in this DFI cohort were deep, and osteomyelitis was common.

  • 69 patients with diabetes and confirmed DFI were included (mean age 56.4 ± 13.2 years; 58% male).
  • Deep wounds made up 88.2% of cases.
  • Osteomyelitis occurred in 42.2% of patients.

Most patients were managed conservatively, with bedside debridement being the most common procedure.

  • Conservative wound care was used in 73.9% of patients.
  • 79.7% underwent bedside debridement.

Amputation rates were low, with major amputation in only 1.4% of patients.

  • Minor amputation rate was 16.2%.
  • Major amputation rate was 1.4%.
  • The authors state limb-preserving management was associated with a low major amputation rate.

Healing time was highly variable, with a median of 45 days and a mean of 56 days.

  • Median healing time was 45 days (interquartile range [IQR] 54).
  • Mean healing time was 56.0 ± 44.9 days.

Healing duration correlated with several clinical, laboratory, and process variables.

  • Correlated variables: wound grade, WIfI stage, infection severity, ESR, WBC count, INR, wound area, and delay to specialist assessment.
  • Analysis used correlation followed by multiple linear regression.

Wound grade was the only independent predictor of healing time in multiple regression.

  • β = 0.606, p = 0.001.
  • Other correlated variables, including WIfI stage, ESR, WBC, INR, wound area and referral delay, were not independent predictors after adjustment.

The authors conclude that wound severity was the strongest determinant of healing duration, supporting early referral and structured risk stratification.

  • Study was a retrospective cross-sectional analysis at a tertiary referral multidisciplinary centre, including patients presenting since 2022.
  • Wounds were classified using the WIfI system.

What This Means

This study looked back at the records of 69 people with diabetes and foot infections treated at a specialist hospital. Most had deep wounds, and about 4 in 10 had bone infection (osteomyelitis). Most were treated with conservative wound care and bedside debridement (removal of dead tissue) rather than major surgery. About 16% had a minor amputation (such as a toe), and only about 1% had a major amputation. Healing took a median of 45 days, though it varied widely. Several factors were linked to longer healing, including worse wound grade, higher infection severity, inflammatory blood markers, larger wound area, and delays in seeing a specialist. However, when these were analyzed together, only wound grade (how severe the wound is) independently predicted healing time. This research suggests that how severe a wound is at the start is the main driver of how long it takes to heal, and that early referral and structured assessment of risk may be important in diabetic foot infection care. Because the study was small, retrospective, and from a single centre, the findings cannot show cause and effect and may not apply to all settings.

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Citation

Tabashiri A, Ghodratnia F, Sam Daliri P, Farahani A, Niazi S, Rezaee H, et al.. (2026). Navigating Treatment Pathways in Diabetic Foot Infection: A Practical Retrospective Analysis of Healing Predictors and the WIfI System.. International wound journal. https://doi.org/10.1111/iwj.71082