TY - GEN
T1 - Estimation of Pathological Gait Asymmetry of Lower-Limb Prosthetic Users at High and Low Walking Speeds
AU - Jaramillo-Isaza, S.
AU - Guerrero-Mendez, C. D.
AU - Montealegre, L. V.
AU - Blanco-Diaz, C. F.
AU - Bastos-Filho, T. F.
AU - Ruiz-Olaya, A. F.
N1 - Publisher Copyright:
© 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2024
Y1 - 2024
N2 - Gait asymmetry provides a quantitative indication of differences between the right and left lower kinematic chain during a walking. The asymmetry during the pathological gait of subjects wearing prostheses or orthoses may vary according to walking speeds. This work presents the differences in the asymmetry of affected and unaffected lower limbs in pathological gait at high and low speeds validated in subjects with pros-theses and lower limb orthoses. Two datasets were used, the first recorded 18 subjects wearing prostheses after above-knee amputation (recorded with 3D cameras) between speeds 0.4 and 1.4 m/s, and the second recorded a pathological gait simulation on 5 healthy subjects wearing KAFO orthoses (recorded with inertial sensors) at speeds 1.8 and 3.1 m/s. Temporal Asymmetry and Normalized Cross-Correlation (CCnorm) methods were used to estimate asymmetry. Additionally, a statistical study was performed to evaluate whether there were significant differences between high-speed and low-speed asymmetry values. The results allow us to conclude that the asymmetry between the affected and unaffected limb at high speed tends to present more significant asymmetry than at low speed. However, these differences were not statistically significant (p< 0.05 ). Nevertheless, the experimental results may support future clinical applications based on lower limb rehabilitation.
AB - Gait asymmetry provides a quantitative indication of differences between the right and left lower kinematic chain during a walking. The asymmetry during the pathological gait of subjects wearing prostheses or orthoses may vary according to walking speeds. This work presents the differences in the asymmetry of affected and unaffected lower limbs in pathological gait at high and low speeds validated in subjects with pros-theses and lower limb orthoses. Two datasets were used, the first recorded 18 subjects wearing prostheses after above-knee amputation (recorded with 3D cameras) between speeds 0.4 and 1.4 m/s, and the second recorded a pathological gait simulation on 5 healthy subjects wearing KAFO orthoses (recorded with inertial sensors) at speeds 1.8 and 3.1 m/s. Temporal Asymmetry and Normalized Cross-Correlation (CCnorm) methods were used to estimate asymmetry. Additionally, a statistical study was performed to evaluate whether there were significant differences between high-speed and low-speed asymmetry values. The results allow us to conclude that the asymmetry between the affected and unaffected limb at high speed tends to present more significant asymmetry than at low speed. However, these differences were not statistically significant (p< 0.05 ). Nevertheless, the experimental results may support future clinical applications based on lower limb rehabilitation.
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U2 - 10.1007/978-3-031-49407-9_4
DO - 10.1007/978-3-031-49407-9_4
M3 - Conference contribution
AN - SCOPUS:85181766451
SN - 9783031494062
T3 - IFMBE Proceedings
SP - 33
EP - 43
BT - 9th Latin American Congress on Biomedical Engineering and 28th Brazilian Congress on Biomedical Engineering - Proceedings of CLAIB and CBEB 2022—Volume 3
A2 - Marques, Jefferson Luiz Brum
A2 - Rodrigues, Cesar Ramos
A2 - Suzuki, Daniela Ota Hisayasu
A2 - García Ojeda, Renato
A2 - Marino Neto, José
PB - Springer Science and Business Media Deutschland GmbH
T2 - 9th Latin American Congress on Biomedical Engineering, CLAIB 2022 and 28th Brazilian Congress on Biomedical Engineering, CBEB 2022
Y2 - 24 October 2022 through 28 October 2022
ER -