: The characterization of both limbs' behaviour in prosthetic gait is of key importance for improving the prosthetic components and increasing the biomechanical capability of trans-femoral amputees. When characterizing human gait, modular motor control theories have been proven to be powerful in providing a compact description of the gait patterns. In this paper, the planar covariation law of lower limb elevation angles is proposed as a compact, modular description of prosthetic gait; this model is exploited for a comparison between trans-femoral amputees walking with different prosthetic knees and control subjects walking at different speeds. Results show how the planar covariation law is maintained in prostheses users, with a similar spatial organization and few temporal differences. Most of the differences among the different prosthetic knees are found in the kinematic coordination patterns of the sound side. Moreover, different geometrical parameters have been calculated over the common projected plane, and their correlation with classical gait spatiotemporal and stability parameters has been investigated. The results from this latter analysis have highlighted a correlation with several parameters of gait, suggesting that this compact description of kinematics unravels a significant biomechanical meaning. These results can be exploited to guide the control mechanisms of prosthetic devices based purely on the measurement of relevant kinematic quantities.

Characterization of prosthetic knees through a low-dimensional description of gait kinematics / Ranaldi, Simone; De Marchis, Cristiano; Serrao, Mariano; Ranavolo, Alberto; Draicchio, Francesco; Lacquaniti, Francesco; Conforto, Silvia. - In: JOURNAL OF NEUROENGINEERING AND REHABILITATION. - ISSN 1743-0003. - 20:1(2023). [10.1186/s12984-023-01160-5]

Characterization of prosthetic knees through a low-dimensional description of gait kinematics

Ranaldi, Simone;Serrao, Mariano;Ranavolo, Alberto;Draicchio, Francesco;Lacquaniti, Francesco;Conforto, Silvia
2023

Abstract

: The characterization of both limbs' behaviour in prosthetic gait is of key importance for improving the prosthetic components and increasing the biomechanical capability of trans-femoral amputees. When characterizing human gait, modular motor control theories have been proven to be powerful in providing a compact description of the gait patterns. In this paper, the planar covariation law of lower limb elevation angles is proposed as a compact, modular description of prosthetic gait; this model is exploited for a comparison between trans-femoral amputees walking with different prosthetic knees and control subjects walking at different speeds. Results show how the planar covariation law is maintained in prostheses users, with a similar spatial organization and few temporal differences. Most of the differences among the different prosthetic knees are found in the kinematic coordination patterns of the sound side. Moreover, different geometrical parameters have been calculated over the common projected plane, and their correlation with classical gait spatiotemporal and stability parameters has been investigated. The results from this latter analysis have highlighted a correlation with several parameters of gait, suggesting that this compact description of kinematics unravels a significant biomechanical meaning. These results can be exploited to guide the control mechanisms of prosthetic devices based purely on the measurement of relevant kinematic quantities.
2023
Gait analysis
01 Pubblicazione su rivista::01a Articolo in rivista
Characterization of prosthetic knees through a low-dimensional description of gait kinematics / Ranaldi, Simone; De Marchis, Cristiano; Serrao, Mariano; Ranavolo, Alberto; Draicchio, Francesco; Lacquaniti, Francesco; Conforto, Silvia. - In: JOURNAL OF NEUROENGINEERING AND REHABILITATION. - ISSN 1743-0003. - 20:1(2023). [10.1186/s12984-023-01160-5]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1705046
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