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Ground reaction force pattern in limbs with intermittent claudication.

R M Ayzin Rosoky1, N Wolosker, B Muraco-Netto

  • 1Division of Vascular Surgery, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.

European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery
|September 14, 2000
PubMed
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Patients with unilateral intermittent claudication (IC) show a specific descending plantar impulse pattern in affected limbs. This gait pattern, however, does not correlate with the onset of claudication pain.

Area of Science:

  • Biomechanics
  • Vascular Medicine
  • Gait Analysis

Background:

  • Unilateral intermittent claudication (IC) is a debilitating condition affecting lower limb circulation.
  • Gait analysis using ground reaction forces can reveal biomechanical alterations in patients with vascular disease.

Purpose of the Study:

  • To identify a unique ground reaction force pattern in the lower limbs of patients with unilateral IC.
  • To determine the relationship between this identified gait pattern and the onset of claudication.

Main Methods:

  • Gait was analyzed in 30 unilateral IC patients and 12 controls using the F-Scan system during treadmill testing.
  • Plantar impulse patterns were calculated for ischemic, contralateral, and control limbs.
  • Two patterns were defined: descending (decreasing impulse) and non-descending (non-decreasing impulse).

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Main Results:

  • Ischemic lower limbs predominantly exhibited a descending plantar impulse pattern compared to control and contralateral limbs (p<0.02).
  • No significant correlation was found between the plantar impulse pattern and the onset of claudication.

Conclusions:

  • A distinct descending plantar impulse pattern is characteristic of ischemic lower limbs in patients with unilateral IC.
  • This specific gait pattern is not associated with the severity or onset of claudication pain.