Objective To observe the effects of artificial dermis combined with basic fibroblast growth factor (bFGF) on the treatment of cicatrix and deep skin wounds.
Methods The clinical data of 72 patients with wounds repaired with artificial dermis, hospitalized in our unit from October 2010 to April 2015, conforming to the study criteria, were retrospectively analyzed. The types of wounds were wounds after resection of cicatrices, deep burn wounds without exposure of tendon or bone, and wounds with exposure of small area of tendon or bone, in a total number of 102. Wounds were divided into artificial dermis group (A,
n=60) and artificial dermis+ bFGF group (B,
n=42) according to whether or not artificial dermis combined with bFGF. In group A, after release and resection of cicatrices or thorough debridement of deep skin wounds, artificial dermis was directly grafted to wounds in the first stage operation. After complete vascularization of artificial dermis, wounds were repaired with autologous split-thickness skin grafts in the second stage operation. In group B, all the procedures were exactly the same as those in group A except that artificial dermis had been soaked in bFGF for 30 min before grafting. Operation area, complete vascularization time of artificial dermis, survival of skin grafts, and the follow-up condition of wounds in the two groups were recorded. Data were processed with
t test and Fisher's exact test.
Results (1) Operation areas of wounds after resection of cicatrices, deep burn wounds without exposure of tendon or bone, and wounds with exposure of small area of tendon or bone in the two groups were about the same (with
t values from -1.853 to -0.200,
P values above 0.05). Complete vascularization time of artificial dermis in wounds after resection of cicatrices, deep burn wounds without exposure of tendon or bone, and wounds with exposure of small area of tendon or bone in group B were respectively (15.6±2.9), (14.7±2.7), and (20.3±4.4) d, and they were shorter by an average time of 2.7, 4.0, 7.4 d, respectively, as compared with those in corresponding types of wounds in group A [respectively (18.3±4.7), (18.7±4.2), and (27.7±8.8) d, with
t values from -2.779 to -2.383,
P values below 0.05]. (2) The ratio of skin grafts with excellent survival in the three types of wounds in group B were higher than those in corresponding types of wounds in group A, but there were no statistically significant differences (with
P values above 0.05). (3) Patients were followed up for 1 to 48 months, and there were no obvious cicatrices in skin graft sites and the donor sites during the following time.
Conclusions Artificial dermis combined with bFGF can effectively shorten the vascularization time of artificial dermis in wounds after resection of cicatrices and deep skin wounds.
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