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1 2020

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Biomechanical evaluation of swing-through crutch gait in patients with lower extremity injury

Rzepnicka Agata, Kabaciński Jarosław, Murawa Michał, Fryzowicz Anna, Syczewska Małgorzata, Dworak Lechosław Bogdan

Acta of Bioengineering and Biomechanics

2020

Vol. 22, no. 1

111--117

The main purpose was to determine the values of spatio-temporal parameters and ground reaction forces during the swingthrough crutch gait. Methods: Eighteen male patients with unilateral injury within the foot, ankle or shank (age: 25.4 ± 7.7 years, body height: 1.79 ± 0.06 m, body mass: 76.1 ± 11.5 kg) participated in the study. In the experiment, 6-camera optoelectronic motion capture system and force platform were used. The measurements of spatio-temporal parameters and ground reaction force (GRF) were performed for uninjured lower extremity (ULE), crutch on the ULE side (CrU) and crutch on the injured lower extremity side (CrI). Results: Analysis demonstrated a significantly longer stance phase and a significantly shorter swing phase for ULE than crutches ( p < 0.05), and a significantly longer first, compared to the second, double support phase ( p < 0.05). Comparisons showed also significantly higher maximum values of the vertical GRF and extreme values of the horizontal antero-posterior GRF for ULE than crutches ( p < 0.05) as well as for CrI than CrU ( p < 0.05). Conclusions: The present study provides biomechanical data related to the spatio-temporal parameters and GRFs for the swing-through crutch gait in patients with the lower extremity injuries.