Abstract

To evaluate the safety and efficacy of an at-home photobiomodulation (PBM) device for the treatment of diabetic foot ulcers (DFUs) in a frail population with severe comorbidities. Prospective, randomized, double-blind, sham-controlled pilot study. Patients (age = 63 ± 11years, male:female 13:7) with insulin-dependent diabetes type 2, neuropathy, peripheral artery disease, significant co-morbidities, and large osteomyelitis-associated DFUs (University of Texas grade ≥ III) were randomized to receive active (n = 10) or sham (n = 10) at-home daily PBM treatments (pulsed near-infrared 808nmGa-Al-As laser, 250mW, 8.8J/cm2) for up to 12weeks in addition to standard care. The primary outcome was the %wound size reduction. The secondary was adverse events. With the numbers available, PBM-treated group had significantly greater %reduction compared to sham (area [cm2], baseline vs endpoint: PBM 10[20.3]cm2 vs 0.2[2.4]cm2; sham, 7.9 [12.0]cm2 vs 4.6 [13.8]cm2, p = 0.018 by Mann-Whitney U test). Wound closure > 90% occurred in 7 of 10 PBM-treated patients but in only 1 of 10 sham patients (p = 0.006). No adverse device effects were observed. Photobiomodulation at home, in addition to standard care, may be effective for the treatment of severe DFUs in frail patients with co-morbidities and is particularly relevant at these times of social distancing. Our preliminary results justify the conduction of a larger clinical trial. gov: NCT01493895.

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