Ineffectiveness of acute scalp expansion

Edoardo Raposio, Antonio Cella, Paola Barabino, PierLuigi Santi

Research output: Contribution to journalArticle

Abstract

The aim of this study was to test the ex vivo biomechanical properties of acutely expanded scalp flaps to quantitatively assess the efficacy of acute scalp expansion. A total of 14 fresh male cadavers were used for the study. In each cadaver, a rectangular (4 x 10 cm), laterally based flap was designed on each side of the scalp, starting from the superior margin of the external auditory canal. One randomly selected flap per scalp underwent acute intermittent expansion (a 3-minute expansion/3-minute rest cycle was performed three times with the maximum expansion achievable); the contralateral flap served as a control. After the expansion process, the acutely expanded flaps were measured to assess whether applied biomechanical stress caused any changes in flap dimensions. The biomechanical properties (stress/strain ratio, mean stiffness) of both expanded and control flaps were then assessed by means of a dynamometer and a force transducer. The obtained data showed that the biomechanical benefits provided by acute scalp expansion were not statistically different (p <0.05) from those obtained by simple subgaleal undermining. No change of length nor gain in compliance was observed in the acutely expanded flaps as compared with control scalp flaps. In the authors' opinion, a possible explanation (to be further validated) for the lack of effect of acute scalp expansion might be that the inelastic galea aponeurotica did not allow mechanical creep to exploit the inherent elastic properties of the overlying scalp skin.

Original languageEnglish
Pages (from-to)1645-1649
Number of pages5
JournalPlastic and Reconstructive Surgery
Volume103
Issue number6
DOIs
Publication statusPublished - May 1999

Fingerprint

Scalp
Cadaver
Ear Canal
Transducers
Compliance
Skin

ASJC Scopus subject areas

  • Surgery

Cite this

Ineffectiveness of acute scalp expansion. / Raposio, Edoardo; Cella, Antonio; Barabino, Paola; Santi, PierLuigi.

In: Plastic and Reconstructive Surgery, Vol. 103, No. 6, 05.1999, p. 1645-1649.

Research output: Contribution to journalArticle

Raposio, E, Cella, A, Barabino, P & Santi, P 1999, 'Ineffectiveness of acute scalp expansion', Plastic and Reconstructive Surgery, vol. 103, no. 6, pp. 1645-1649. https://doi.org/10.1097/00006534-199905060-00010
Raposio, Edoardo ; Cella, Antonio ; Barabino, Paola ; Santi, PierLuigi. / Ineffectiveness of acute scalp expansion. In: Plastic and Reconstructive Surgery. 1999 ; Vol. 103, No. 6. pp. 1645-1649.
@article{65c91f3efd554daaa61762d59068360f,
title = "Ineffectiveness of acute scalp expansion",
abstract = "The aim of this study was to test the ex vivo biomechanical properties of acutely expanded scalp flaps to quantitatively assess the efficacy of acute scalp expansion. A total of 14 fresh male cadavers were used for the study. In each cadaver, a rectangular (4 x 10 cm), laterally based flap was designed on each side of the scalp, starting from the superior margin of the external auditory canal. One randomly selected flap per scalp underwent acute intermittent expansion (a 3-minute expansion/3-minute rest cycle was performed three times with the maximum expansion achievable); the contralateral flap served as a control. After the expansion process, the acutely expanded flaps were measured to assess whether applied biomechanical stress caused any changes in flap dimensions. The biomechanical properties (stress/strain ratio, mean stiffness) of both expanded and control flaps were then assessed by means of a dynamometer and a force transducer. The obtained data showed that the biomechanical benefits provided by acute scalp expansion were not statistically different (p <0.05) from those obtained by simple subgaleal undermining. No change of length nor gain in compliance was observed in the acutely expanded flaps as compared with control scalp flaps. In the authors' opinion, a possible explanation (to be further validated) for the lack of effect of acute scalp expansion might be that the inelastic galea aponeurotica did not allow mechanical creep to exploit the inherent elastic properties of the overlying scalp skin.",
author = "Edoardo Raposio and Antonio Cella and Paola Barabino and PierLuigi Santi",
year = "1999",
month = "5",
doi = "10.1097/00006534-199905060-00010",
language = "English",
volume = "103",
pages = "1645--1649",
journal = "Plastic and Reconstructive Surgery",
issn = "0032-1052",
publisher = "Lippincott Williams and Wilkins",
number = "6",

}

TY - JOUR

T1 - Ineffectiveness of acute scalp expansion

AU - Raposio, Edoardo

AU - Cella, Antonio

AU - Barabino, Paola

AU - Santi, PierLuigi

PY - 1999/5

Y1 - 1999/5

N2 - The aim of this study was to test the ex vivo biomechanical properties of acutely expanded scalp flaps to quantitatively assess the efficacy of acute scalp expansion. A total of 14 fresh male cadavers were used for the study. In each cadaver, a rectangular (4 x 10 cm), laterally based flap was designed on each side of the scalp, starting from the superior margin of the external auditory canal. One randomly selected flap per scalp underwent acute intermittent expansion (a 3-minute expansion/3-minute rest cycle was performed three times with the maximum expansion achievable); the contralateral flap served as a control. After the expansion process, the acutely expanded flaps were measured to assess whether applied biomechanical stress caused any changes in flap dimensions. The biomechanical properties (stress/strain ratio, mean stiffness) of both expanded and control flaps were then assessed by means of a dynamometer and a force transducer. The obtained data showed that the biomechanical benefits provided by acute scalp expansion were not statistically different (p <0.05) from those obtained by simple subgaleal undermining. No change of length nor gain in compliance was observed in the acutely expanded flaps as compared with control scalp flaps. In the authors' opinion, a possible explanation (to be further validated) for the lack of effect of acute scalp expansion might be that the inelastic galea aponeurotica did not allow mechanical creep to exploit the inherent elastic properties of the overlying scalp skin.

AB - The aim of this study was to test the ex vivo biomechanical properties of acutely expanded scalp flaps to quantitatively assess the efficacy of acute scalp expansion. A total of 14 fresh male cadavers were used for the study. In each cadaver, a rectangular (4 x 10 cm), laterally based flap was designed on each side of the scalp, starting from the superior margin of the external auditory canal. One randomly selected flap per scalp underwent acute intermittent expansion (a 3-minute expansion/3-minute rest cycle was performed three times with the maximum expansion achievable); the contralateral flap served as a control. After the expansion process, the acutely expanded flaps were measured to assess whether applied biomechanical stress caused any changes in flap dimensions. The biomechanical properties (stress/strain ratio, mean stiffness) of both expanded and control flaps were then assessed by means of a dynamometer and a force transducer. The obtained data showed that the biomechanical benefits provided by acute scalp expansion were not statistically different (p <0.05) from those obtained by simple subgaleal undermining. No change of length nor gain in compliance was observed in the acutely expanded flaps as compared with control scalp flaps. In the authors' opinion, a possible explanation (to be further validated) for the lack of effect of acute scalp expansion might be that the inelastic galea aponeurotica did not allow mechanical creep to exploit the inherent elastic properties of the overlying scalp skin.

UR - http://www.scopus.com/inward/record.url?scp=0033045336&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033045336&partnerID=8YFLogxK

U2 - 10.1097/00006534-199905060-00010

DO - 10.1097/00006534-199905060-00010

M3 - Article

C2 - 10323696

AN - SCOPUS:0033045336

VL - 103

SP - 1645

EP - 1649

JO - Plastic and Reconstructive Surgery

JF - Plastic and Reconstructive Surgery

SN - 0032-1052

IS - 6

ER -