Floor-to-stand transition strategies observed in individuals with unilateral transfemoral amputation
4 affiliations
- 1Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
- 2Prosthetics and Orthotics Support Center, Tetsudo Kosaikai Foundation, Tokyo, Japan
- 3Arts et Metiers Institute of Technology, EPF Engineering School, Université Sorbonne Paris Nord, IBHGC-Institut de Biomécanique Humaine Georges Charpak, Paris, France
- 4Department of Medical and Robotic Engineering Design, Faculty of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
Abstract
Lower-limb amputation is frequently associated with impaired mobility and an elevated risk of falls, making the restoration of functional independence a primary objective in rehabilitation. The ability to rise from the floor—referred to as the floor-to-stand transition (FTST)—is essential for post-fall recovery; however, the movement strategies employed by individuals with unilateral transfemoral amputation (uTFA) remain poorly characterized. This study aimed to characterize FTST strategies in a sample of individuals with uTFA and examine potential demographic differences between the observed strategy groups. Sixteen individuals with uTFA performed a single FTST trial from a long-sitting position. Movements were video-recorded and evaluated by independent reviewers. Two distinct FTST strategies were observed in the present sample: (i) a rise primarily supported by the intact limb with assistance from one or both upper limbs (n = 11), and (ii) a trunk rotation into a quadruped-like posture followed by bilateral hand support to achieve standing (n = 5). No statistically significant differences in demographic or clinical characteristics were observed between groups. However, participants who adopted the trunk-rotation strategy tended to be older and required more time to complete the FTST than those who adopted the intact-limb strategy, although these differences did not reach statistical significance. These findings highlight the compensatory biomechanical adaptations employed by individuals with uTFA in the absence of active knee control. Rehabilitation should therefore emphasize movement-specific training that accounts for biomechanical demands and age-related differences to enhance safety and efficiency during post-fall recovery.
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BibTeX
@article{mizuno2026floortostand,
title = {{Floor-to-stand transition strategies observed in individuals with unilateral transfemoral amputation}},
author = {Yukihiko Mizuno and Ryota Morishima and Shio Katoh and Genki Hisano and Hiroaki Hobara},
journal = {Frontiers in Rehabilitation Sciences},
year = {2026},
month = oct,
doi = {10.3389/fresc.2026.1959397},
url = {https://doi.org/10.3389/fresc.2026.1959397},
note = {CC BY},
}
RIS
TY - JOUR
TI - Floor-to-stand transition strategies observed in individuals with unilateral transfemoral amputation
AU - Yukihiko Mizuno
AU - Ryota Morishima
AU - Shio Katoh
AU - Genki Hisano
AU - Hiroaki Hobara
PY - 2026
DA - 2026/10/23
JO - Frontiers in Rehabilitation Sciences
DO - 10.3389/fresc.2026.1959397
UR - https://doi.org/10.3389/fresc.2026.1959397
AB - Lower-limb amputation is frequently associated with impaired mobility and an elevated risk of falls, making the restoration of functional independence a primary objective in rehabilitation. The ability to rise from the floor—referred to as the floor-to-stand transition (FTST)—is essential for post-fall recovery; however, the movement strategies employed by individuals with unilateral transfemoral amputation (uTFA) remain poorly characterized. This study aimed to characterize FTST strategies in a sample of individuals with uTFA and examine potential demographic differences between the observed strategy groups. Sixteen individuals with uTFA performed a single FTST trial from a long-sitting position. Movements were video-recorded and evaluated by independent reviewers. Two distinct FTST strategies were observed in the present sample: (i) a rise primarily supported by the intact limb with assistance from one or both upper limbs (n = 11), and (ii) a trunk rotation into a quadruped-like posture followed by bilateral hand support to achieve standing (n = 5). No statistically significant differences in demographic or clinical characteristics were observed between groups. However, participants who adopted the trunk-rotation strategy tended to be older and required more time to complete the FTST than those who adopted the intact-limb strategy, although these differences did not reach statistical significance. These findings highlight the compensatory biomechanical adaptations employed by individuals with uTFA in the absence of active knee control. Rehabilitation should therefore emphasize movement-specific training that accounts for biomechanical demands and age-related differences to enhance safety and efficiency during post-fall recovery.
SN - 2673-6861
ER -