Abstract
Margin of stability of individuals fitted with transfemoral bone-anchored prosthesis using osseointegrated fixation
Prosthetics and Orthotics International, Vol.43(Supplemental 1), pp.474-474
International Society of Prosthetics and Orthotics (ISPO) World Congress, 17th (Kobe, Japan, 05-Oct-2019–08-Oct-2019)
2019
Abstract
BACKGROUND:
The concept of margin of stability in the medial-lateral direction introduced by Hof et al.[1] can characterize gait stability. Indeed, this margin has been presented for individuals with transtibial and transfemoral amputation fitted with socket-suspended prostheses [1]. Furthermore, margin of stability will be particularly relevant to further establish if direct skeletal attachment enabling osseoperception and overall better control on the prosthesis can improve balance during gait. However, this study is yet to be conducted.
AIM:
This study aimed at presenting the margin of stability during gait of individuals fitted with transfemoral boneanchored prosthesis attached to osseointegrated fixation.
METHOD:
Data extracted from a retrospective study included nine participants fitted with transfemoral screw-type osseointegrated fixation performing three gait trials at comfortable speed.[2] Kinematic and dynamic data were recorded simultaneously by a 6-camera 3D motion capture system and two force plates, respectively. The margin of stability corresponded to the difference in the medial-lateral direction between the centre of pressure and the extrapolated centre of mass at the time of the contralateral foot-off.[1] Furthermore, selected spatiotemporal gait characteristics (e.g., stride width, time of stance and double support, walking speed) were extracted and compared to the literature.[3]
RESULTS:
The margin of stability was 1.46 cm larger on the prosthetic side but 0.89 cm smaller on the contralateral side for the osseointegrated group compared to the socket group, respectively. Spatiotemporal gait characteristics were comparable (e.g., stride width and stance duration) or greater (e.g., duration of double support) for the osseointegrated group compared to the socket group. The difference in margin of stability between the two groups might be confounded by study designs. The socket group walked on a treadmill while the osseointegrated group walked overground. The length of residuum or the prosthetic knee may also have an impact on the results although no effect was found within our study.
DISCUSSION AND CONCLUSION:
This study seems to indicate that individuals fitted with transfemoral bone-anchored prosthesis walked with larger margins of stability at least on prosthetic side potentially due to longer double support. However, stronger evidence is required to confirm these results
Details
- Title
- Margin of stability of individuals fitted with transfemoral bone-anchored prosthesis using osseointegrated fixation
- Authors
- Vincent Gibeaux (Author) - Université Claude Bernard Lyon 1Alexandre Naaim (Author) - Université Claude Bernard Lyon 1Thomas Robert (Author) - Université Claude Bernard Lyon 1Raphael Dumas (Author) - Université Claude Bernard Lyon 1Rickard Brånemark (Author) - Massachusetts Institute of TechnologyLaurent Frossard (Author) - University of the Sunshine Coast
- Publication details
- Prosthetics and Orthotics International, Vol.43(Supplemental 1), pp.474-474
- Conference details
- International Society of Prosthetics and Orthotics (ISPO) World Congress, 17th (Kobe, Japan, 05-Oct-2019–08-Oct-2019)
- Publisher
- Sage Publications Ltd.
- Date published
- 2019
- DOI
- 10.1177/0309364619883197
- ISSN
- 1746-1553; 0309-3646
- Organisation Unit
- University of the Sunshine Coast, Queensland; School of Health and Behavioural Sciences - Legacy
- Language
- English
- Record Identifier
- 99513778902621
- Output Type
- Abstract
Metrics
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- Orthopedics
- Rehabilitation
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