Journal of Rehabilitation Research & Development (JRRD)

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Volume 49 Number 4, 2012
   Pages 583 — 596

Abstract — Obstacle course: Users’ maneuverability and movement efficiency when using Otto Bock C-Leg, Otto Bock 3R60, and CaTech SNS prosthetic knee joints

Margrit R. Meier, PhD;1–2* Andrew H. Hansen, PhD;2–3 Steven A. Gard, PhD;2,4–5 Angus K. McFadyen, PhD6
1Department of Occupational Therapy and Prosthetics and Orthotics, Faculty of Health Sciences, Oslo and Akershus University College of Applied Sciences, Oslo, Norway; 2Department of Physical Medicine and Rehabilitation, Northwestern University Prosthetics-Orthotics Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; 3Minneapolis Department of Veterans Affairs (VA) Health Care System, Minneapolis, MN; 4Department of Biomedical Engineering, McCormick School of Engineering and Applied Science, Northwestern University, Chicago, IL; 5Jesse Brown VA Medical Center, Chicago, IL; 6School of Engineering and Computing, Glasgow Caledonian University, Glasgow, Scotland, UK

Abstract — 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.

Keywords:3R60, C-Leg, maneuverability, mental loading task, movement efficiency, obstacle course, prosthetic knee joint, SNS, Total Heart Beat Index, walking.

View HTML  ¦  View PDF  ¦  Contents Vol. 49, No. 4
This article and any supplementary material should be cited as follows:
Meier MR, Hansen AH, Gard SA, McFadyen AK. Obstacle course: Users’ maneuverability and movement efficiency when using Otto Bock C-Leg, Otto Bock 3R50, and CaTech SNS prosthetic knee joints. J Rehabil Res Dev. 2012;49(4):583–96.

Last Reviewed or Updated  Wednesday, May 30, 2012 10:24 AM

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