Influence of advanced prosthetic knee joints on perceived performance and everyday life activity level of low-functional persons with a transfemoral amputation or knee disarticulation.
Persons with a transfemoral amputation are shown to use between 27%-49% more energy to walk, and a significantly lower pace. Could the use of a microprocessor knee (MPK) limit the physical and mental load of walking with the prosthetics and thereby their functional abilities?
For the amputee, their perceived level of functionality may be of more significance than the improved gait itself. Studying this matter can prove difficult, as there are many exclusion criteria that will affect the results; these include both personal and mechanical factors. E.g. irritation caused by fixation of the accelerometer to collect data, or failure to walk safely on the prosthetic.
When amputees used a MPK they showed significantly higher levels of perceived functionality than when wearing the mechanical knee. Although the type of knee used did not influence how much activity the participant performed, it was evident that the more active the participant was (perhaps naturally) the greater the improvement in perceived functionality when using the MPK.
Persons with a leg amputation have adapted their lifestyle to manage the functional limitations associated; when a higher functioning prosthetic is applied further encouragement is necessary to influence a gradual increase in activity and get the most out of the prosthetic > From Theeven, et al., J Rehabil Med 44 (2012) 454-461. All rights reserved to The Authors
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