The importance of a skin bridge in peripheral tissue perfusion in perforator flaps.

Abstract:

BACKGROUND:Perforator flaps are increasingly used in reconstructive surgery. However, the microvascular perfusion pattern within these flaps remains essentially unknown. In perforator flaps, the importance of preserving the skin bridge at the base is still an object of debate. The authors hypothesized that dividing the skin bridge will increase peripheral tissue perfusion in islanded perforator flaps. METHODS:The abdominal panniculus in patients submitted to elective abdominoplasty was used (n = 24). Flap perfusion was measured by dynamic laser-induced fluorescence videoangiography. The fluorescent dye indocyanine green was injected intravenously before and after conversion of a perforator flap with an intact skin bridge into an islanded perforator flap. To evaluate perfusion, mean pixel intensity and mean perfusion index were calculated in a control zone and in two zones in the flap. RESULTS:In zone I (the most peripheral zone), surgical release of the skin bridge increased mean pixel intensity (19.1 ± 1.9 versus 24.1 ± 2.1; p < 0.001). The mean perfusion index was calculated as 7.5 ± 5.5 and 12.6 ± 6.3 before and after surgical conversion to islanded perforator flaps, respectively. In zone II (the more proximal zone), mean pixel intensity increased (from 30.8 ± 2.8 to 33.7 ± 2.3; p < 0.001) after surgical release of the skin bridge. The mean perfusion index was 18.5 ± 11.1 and 15.6 ± 6.2. CONCLUSIONS:In this human experimental study, conversion of a perforator flap with a skin bridge into an islanded perforator flap increases peripheral tissue perfusion. This finding provides a physiologic basis for using islanded perforator flaps, with enhanced flap mobility and length.

journal_name

Plast Reconstr Surg

authors

Mešić H,Kirkebøen KA,Bains R

doi

10.1097/PRS.0b013e31824423f8

subject

Has Abstract

pub_date

2012-03-01 00:00:00

pages

428e-434e

issue

3

eissn

0032-1052

issn

1529-4242

pii

00006534-201203000-00008

journal_volume

129

pub_type

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