The Vertical Ground Reaction Force and Temporal-Spatial Parameters of Transfemoral Amputees Wearing Three Prosthetic Knee Joints Available in Thailand: a Pilot Study

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Thanyaporn Rakbangboon
Manunchaya Samala
http://orcid.org/0000-0002-6244-7209
Sunee Bovonsunthonchai
Gary Guerry
Kasun Kithsiri Rupasinghe
Loganayaki Ramakrishnan
Stephney Weerasinghe
Jeewantha Sasika
Pham Thi Hoa
Thanatat Charatrungolan

Abstract

Objective: To examine the temporal-spatial characteristics of transfemoral amputees using three prosthetic knees available in Thailand. In addition, the estimated vertical Ground Reaction Force (vGRF) was explored, in particular the graphical differences in the M-shape of the vGRF pattern amongst each of the knees and the sound limb.
Methods: Three transfemoral amputees were fitted with three different prosthetic knee joints (Chulalongkorn University (CU) Polycentric Knee Joint, Prosthesis Foundation Knee, Otto Bock 3R20) and performed walking trials while the vGRF and temporal-spatial parameters were collected for all participants.
Results: Similarities existed amongst GRF metrics across all prosthetic knees. Stance and swing time in the CU Polycentric Knee Joint was similar to that of the sound limb. Walking speeds were highest in the Otto Bock 3R20 and lowest in the Prosthesis Foundation Knee.
Conclusion: This preliminary pilot testing revealed similarities amongst all three prosthetic knees. Future research with more participants and additional analysis could further elucidate characteristics of these prosthetic knees.

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How to Cite
Rakbangboon, T., Samala, M., Bovonsunthonchai, S., Guerry, G., Rupasinghe, K. K., Ramakrishnan, L., Weerasinghe, S., Sasika, J., Hoa, P. T., & Charatrungolan, T. (2019). The Vertical Ground Reaction Force and Temporal-Spatial Parameters of Transfemoral Amputees Wearing Three Prosthetic Knee Joints Available in Thailand: a Pilot Study. Siriraj Medical Journal, 71(5), 399–404. https://doi.org/10.33192/Smj.2019.60
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Original Article