Article

The performance and movement efficiency of prosthesis users while traversing a
multisectional obstacle course (OC) were evaluated using a crossover design with
random allocation of three prosthetic knee joints: the SNS (CaTech; Dayton, Ohio)
the C-Leg (Otto Bock; Duderstadt, Germany), and the 3R60 (Otto Bock). Twelve
users completed the OC twice with each joint, once without and once with a mental
loading task (MLT). The performance was objectively assessed using time
measurement from digital video recordings, and the Total Heart Beat Index was
used to estimate movement efficiency. A 1 mo familiarization period was provided
for each knee joint before data collection. It took longer to complete the OC
with the 3R60 compared with either the SNS or the C-Leg. No significant time
differences were found between the C-Leg and the SNS, but differences between the
3R60 and the SNS (slalom and rock sections) and between the 3R60 and the C-Leg
(rock section) were observed. Within the simulated sand section, two participants
fell with the C-Leg, one with the 3R60, and none with the SNS. Movement
efficiency without MLT was similar between all joints, but with an MLT a
significant decrease in movement efficiency was observed with the C-Leg. Previous
experience using an SNS had no influence on the results.

Langue : ANGLAIS