Article

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 micro
processor-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.

Langue : ANGLAIS