Split-skin graft in the management of diabetic foot ulcers.
ABSTRACT To compare the effects of split-thickness skin grafts versus a conservative wound dressing on the healing times of diabetic foot ulcers and the length of hospital stay.
In this prospective case-controlled study, 50 patients consented to skin grafting (graft group) and 50 preferred to be managed by conservative dressings (control group). Wound management in both groups was standardised with regard to the dressing materials (which comprised a multilayer dressing including paraffin gauze and diluted povidone-iodine soaked gauze), wound care and surgeon involvement. Graft take, ulcer recurrence rate and donor-site morbidity were assessed. Healing times and the length of hospital stay were compared between the two groups.
A 100% skin graft take was recorded in 84% of the patients on the fifth postoperative day and in 62% on weeks 3 and 8. All patients in the graft group healed completely, but 8% had an ulcer recurrence and 4% a superficial infection within the following year. The mean healing time and mean length of hospital stay were significantly less in the graft group compared with the control group (p<0.001), reflecting results of similar studies.
Split-skin grafting is an effective method of managing diabetic foot ulcers as, compared with the conservative dressings used in this study, it reduced healing times and the length of hospital stay, while donor-site morbidity was minimal.
- SourceAvailable from: Reza Nazari
Chapter: Diabetic Foot ulcer04/2013: pages 47; , ISBN: 978-953-51-1061-3
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ABSTRACT: Myofibroblasts, recognized classically by α-smooth muscle actin (α-SMA) expression, play a key role in the wound-healing process, promoting wound closure and matrix deposition. Although a body of evidence shows that keratinocytes explanted onto a wound bed promote closure of a skin injury, the underlying mechanisms are not well understood. The basal layer of epidermis is rich in undifferentiated keratinocytes (UKs). We showed that UKs injected into granulation tissue could switch into α-SMA positive cells, and accelerate the rate of skin wound healing. In addition, when the epidermis sheets isolated from foreskin cover up the wound bed or are induced in vitro, keratinocytes located at the basal layers or adjacent sites were observed to convert into myofibroblast-like cells. Thus, UKs have a potential for myofibroblastic transition, which provides a novel mechanism by which keratinocyte explants accelerate skin wound healing.Science China. Life sciences 01/2014; · 2.02 Impact Factor
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ABSTRACT: The application of split-thickness skin grafts (STSGs) to chronic extremity wounds has often been considered undesirable because of the perceived high incidence of failure, especially in neuropathic patients with plantar diabetic foot wounds. The purpose of this study was to evaluate the outcomes of STSG placement in patients with chronic lower extremity wounds. We abstracted data from consecutive patients at our institution from January 2007 through April 2013 who underwent STSG placement by vascular and podiatric surgeons for chronic wounds of the lower limb and foot. Patients were monitored for at least 24 weeks, unless the wounds healed sooner. There were 94 patients (72% male) in the study group, with a mean age of 61.0 ± 12.8 years. Of these, 66 patients had diabetes, including 13 who were dialysis-dependent; the remaining 28 had other chronic nondiabetic wounds. The average duration of follow-up was 12.0 ± 12.9 months. After STSG placement, 65 (69.1%) experienced complete graft incorporation and healing, and 18 (19.1%) required revision, five (5.3%) of whom ultimately required major limb amputation. There were no differences in healing when wounds in patients with and without diabetes or plantar vs nonplantar wound locations were compared (P > .05). Similar results were observed after adjusting the results for initial wound size. Although dialysis patients had a threefold higher rate of STSG revision (46.2% vs 14.8%; P = .01), the cumulative rate of wound healing as a function of time was independent of end-stage renal disease (P = .83). The results of this study suggest that STSG may be an effective method for promotion of wound healing in the management of chronic lower extremity wounds irrespective of wound location and presence of diabetes.Journal of vascular surgery: official publication, the Society for Vascular Surgery [and] International Society for Cardiovascular Surgery, North American Chapter 02/2014; · 3.52 Impact Factor