Burn Scar Biomechanics after Pressure Garment Therapy.

Abstract:

BACKGROUND:The current standard of care for the prevention and treatment of scarring after burn injury is pressure garment therapy. Although this therapy has been used clinically for many years, controversy remains regarding its efficacy. The authors evaluated the efficacy of pressure garment therapy in a female red Duroc pig burn model in which wound depth could be tightly controlled. METHODS:Full-thickness burn wounds were generated on female red Duroc pigs. At day 28 after burn, pressure garment therapy was applied to half the wounds (10 mmHg), with control wounds covered with garments that exerted no compression. Scar area, perfusion, hardness, and elasticity were quantified at days 0, 28, 42, 56, and 72 using computerized planimetry, laser Doppler, and torsional ballistometry. Scar morphology was assessed at days 28, 56, and 76 using histology, immunohistochemistry, and transmission electron microscopy. RESULTS:Pressure garment therapy significantly hindered scar contraction, with control scars contracting to 64.6 percent + 13.9 percent original area at day 72, whereas pressure garment therapy scars contracted to 82.7 percent + 17.9 percent original area. Pressure garments significantly reduced skin hardness and increased skin strength by 1.3 times. No difference in perfusion or blood vessel density was observed. The average collagen fiber diameter was greater in control burns than in pressure garment therapy. CONCLUSIONS:Pressure garment therapy was effective at reducing scar contraction and improving biomechanics compared with control scars. These results confirm the efficacy of pressure garments and highlight the need to further investigate the role of pressure magnitude and the time of therapy application to enhance efficacy for optimal biomechanics and patient mobility.

journal_name

Plast Reconstr Surg

authors

Kim JY,Willard JJ,Supp DM,Roy S,Gordillo GM,Sen CK,Powell HM

doi

10.1097/PRS.0000000000001507

subject

Has Abstract

pub_date

2015-09-01 00:00:00

pages

572-581

issue

3

eissn

0032-1052

issn

1529-4242

pii

00006534-201509000-00025

journal_volume

136

pub_type

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