Abstract:
Introduction: Despite of surgery rapid progress, the problem of improving the quality of scars worries surgeons, dermatologists, cosmetologists. Hypertrophic scars and keloid ones can be described as
kinds of usual wound healing. Clinically keloid scar gives trouble in the form of itching, burning, painfulness. Keloid and hypertrophic scars differ from nontrophic by rich vascular net, high compactness of
mesenchymal cells and fibers, which are turned chaotically.
Purpose: increase the efficiency of treatment of the hypertrophic and keloid scars.
Materials and methods: 52 patients with hypertrophic and keloid skin scars were monitored by us.
Topography, sizes and age of the hypertrophic scars did not matter and therefore were not clinically classified. Age of the patients was from 20 to 44 years old. Some indexes like height of the scar on the skin,
area of the scar, consistence, color, condition of the surrounding skin, scar microcirculation were studied
in result of the therapeutic measures. All the patients received diprospan in thickness of the scar three
times during 4 weeks at a rate of 7 mg per 5 square centimeters, but not more than 14 mg in the whole
scar for the one time. After the obtained medicamental hypotrophy scar tissue was subjected to the effect
of neodymium laser radiation with wave length of 540 nm, energy of pulse 50-150 mj, frequency of pulse
1-4 Hz, pulse duration 1-2 ns (generation mode Q - sw). Neodymium laser radiation was obtained with
active medium Nd: YAP (Q-sw)/KTP.
Results: Application of high therapeutic diprospan doses makes it possible to bring keloid scars to
hypotrophy and atrophy in a short time. There is a change not only a structure of scar tissue, but decrease
in the initial area also, by the hypertrophic and keloid scar transition to state of atrophy at first and to state
normotrophy after laser use. Use of neodymium laser radiation in generation mode Q - sw with pulse
duration 1-2 ns leads to obliteration of vessels in the scar bottom without effects on the scar tissue proper
and surrounding tissues. There was decrease in the area of the keloid and hypertrophic scars an average
of 23 ± 4.3 % (P<0,05) in 8 weeks.
Conclusions: Thereby proposed method allows toreceive lasting clinical result: decrease in the area
of the scar, formation of the normotrophic scar tissue, improvement of the consistence and change of the
color, which is typical for surrounding skin. This method is painless and safe, it does not influence on surrounding tissues, so long as it is confirmed by stable clinical result of patients in a year after the treatment.
