Deformation and pressure propagation in deep tissue during mechanical painful pressure stimulation

Sara Finocchietti, Ken Takahashi, Kaoru Okada, Yasuharu Watanabe, Thomas Graven-Nielsen, Kazue Mizumura

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Manual palpation or pressure stimulation is often used for pain sensitivity assessment. The aim of the current study was to define a method for investigating the relation between pressure pain sensitivity and pressure propagation in soft or harder muscles. Three-dimensional finite-element computer-models were developed to simulate the tissue stress and strain distribution during pressure stimulation on the tibialis anterior and gastrocnemius muscles. Four cases were modelled representing females and males who were trained and untrained. The model geometry was based on MR images of the lower leg during pressure stimulation. Stress and strain were extracted from the models at pressure intensity levels equivalent to the pressure pain threshold. The principal strain peaked in the adipose tissue at 0.30 and 0.14 for stimulation on the gastrocnemius and tibialis anterior muscle, respectively. The principal strain in the muscle was higher for four models of the stimulation on the gastrocnemius muscle (0.22-0.30) compared with the four models of stimulation on the tibialis anterior muscle (0.11-0.14). Average pressure pain thresholds were significantly lower for the tibialis anterior compared with the gastrocnemius muscle (319 vs. 432 kPa) These data show different pressure propagation profiles in soft and hard muscle at the same pressure pain sensation level. This new approach is relevant as the clinical routine assesses all muscles equally. This results in a different exposure to pressure in relation to the muscle evaluated which may affect the outcome of the examination.

Original languageEnglish
Pages (from-to)113-122
Number of pages10
JournalMedical & Biological Engineering & Computing
Volume51
Issue number1-2
DOIs
Publication statusPublished - Feb 2013

Fingerprint

Muscle
Tissue
Pressure
Muscles
Skeletal Muscle
Pain Threshold
Pain
Palpation
Pain Measurement
Pressure distribution
Computer Simulation
Adipose Tissue
Leg
Geometry

Keywords

  • Finite-element model
  • Muscle pain
  • Pressure algometry
  • Pressure propagation

ASJC Scopus subject areas

  • Biomedical Engineering
  • Computer Science Applications
  • Medicine(all)

Cite this

Deformation and pressure propagation in deep tissue during mechanical painful pressure stimulation. / Finocchietti, Sara; Takahashi, Ken; Okada, Kaoru; Watanabe, Yasuharu; Graven-Nielsen, Thomas; Mizumura, Kazue.

In: Medical & Biological Engineering & Computing, Vol. 51, No. 1-2, 02.2013, p. 113-122.

Research output: Contribution to journalArticle

Finocchietti, Sara ; Takahashi, Ken ; Okada, Kaoru ; Watanabe, Yasuharu ; Graven-Nielsen, Thomas ; Mizumura, Kazue. / Deformation and pressure propagation in deep tissue during mechanical painful pressure stimulation. In: Medical & Biological Engineering & Computing. 2013 ; Vol. 51, No. 1-2. pp. 113-122.
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