TITLE

Load applied on bone-anchored transfemoral prosthesis: Characterization of a prosthesis--A pilot study

AUTHOR(S)
Frossard, Laurent; Hggstrm, Eva; Hagberg, Kerstin; Brnemark, Rickard
PUB. DATE
September 2013
SOURCE
Journal of Rehabilitation Research & Development;2013, Vol. 50 Issue 5, p619
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The objectives of this study were to (1) record the inner-prosthesis loading during activities of daily living (ADLs), (2) present a set of variables comparing loading data, and (3) provide an example of characterization of two prostheses. The load was measured at 200 Hz using a multi-axial transducer mounted between the residuum and the knee of an individual with unilateral transfemoral amputation fitted with a bone-anchored prosthesis. The load was measured while using two different prosthetic knees, mechanical (PRO1) and microprocessor-controlled (PRO2), during six ADLs. The characterization of the prostheses was achieved using a set of variables split into four categories, including temporal characteristics, maximum loading, loading slopes, and impulse. Approximately 360 gait cycles were analyzed for each prosthesis. PRO1 showed a cadence improved by 19% and 7%, a maximum force on the long axis reduced by 11% and 19%, and an impulse reduced by 32% and 15% during descent of incline and stairs compared with PRO2, respectively. This work confirmed that the proposed apparatus and characterization can reveal how changes of prosthetic components are translated into inner-prosthetic loading.
ACCESSION #
90131545

 

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