Obstacle crossing behaviour in transfemoral prosthesis users: the effect of prosthetic componentry

Hughes, LD, Hafesji-Wade, AE, Levick, JL, Bisele, M and Barnett, CT ORCID: https://orcid.org/0000-0001-6898-9095, 2025. Obstacle crossing behaviour in transfemoral prosthesis users: the effect of prosthetic componentry. Clinical Biomechanics, 129: 106649. ISSN 0268-0033

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Abstract

Background

Functionally advanced prosthetic ankle-foot and knee components have separately been shown to positively affect obstacle crossing in individuals with a transfemoral amputation. It is unknown, however, what effect combining functionally advanced components has on transfemoral prosthesis users' obstacle-crossing strategies. The study aimed to assess how different knee and ankle-foot prosthetic components influence obstacle-crossing strategies in unilateral transfemoral prosthesis users.

Methods

Individuals with a unilateral transfemoral amputation (n = 9) crossed an obstacle (30 cm × 10 cm × 8 cm) placed along an 8.3 m walkway. This was completed in four different prosthetic conditions: a combination of two different knee components (microprocessor and non-microprocessor) with one of two ankle-foot components (rigidly or hydraulically articulating ankles). Full-body kinematics were recorded as participants crossed the obstacles.

Findings

Obstacle-crossing strategies were not influenced by the prosthetic component combination. Although small changes were observed in kinematics (joint angles and centre of mass movement) and outcomes such as toe clearance and foot placement, these differences were not statistically significant.

Interpretation

When using different combinations of prosthetic ankle-foot and knee components, lower limb transfemoral prosthesis users make very small changes to movements during obstacle crossing. Obstacle-crossing strategies and outcomes are also not highly influenced by manipulating component use, suggesting relatively high neuromotor flexibility in established unilateral transfemoral prosthesis users when crossing a small obstacle.

Item Type:	Journal article
Publication Title:	Clinical Biomechanics
Creators:	Hughes, L.D., Hafesji-Wade, A.E., Levick, J.L., Bisele, M. and Barnett, C.T.
Publisher:	Elsevier BV
Date:	October 2025
Volume:	129
ISSN:	0268-0033
Identifiers:	Number Type 10.1016/j.clinbiomech.2025.106649 DOI S0268003325002220 Publisher Item Identifier 2490903 Other
Rights:	This accepted manuscript is shared under a CC-BY-NC-ND license after a 12-month embargo period.
Divisions:	Schools > School of Science and Technology
Record created by:	Melissa Cornwell
Date Added:	05 Nov 2025 16:12
Last Modified:	05 Nov 2025 16:12
URI:	https://irep.ntu.ac.uk/id/eprint/54684

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