title: Obstacle course: users' maneuverability and movement efficiency when using Otto Bock C-Leg, Otto Bock 3R60, and CaTech SNS prosthetic knee joints.
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.
authors: Department of Occupational Therapy and Prosthetics and Orthotics, Faculty of Health Sciences, Oslo and Akershus University College of Applied Sciences, Norway. Margrit-R.Meier@hioa.no
authors: Margrit R
authors: MR
authors: Meier
authors: Andrew H
authors: AH
authors: Hansen
authors: Steven A
authors: SA
authors: Gard
authors: Angus K
authors: AK
authors: McFadyen
mesh_terms: D000328:Adult; D000368:Aged; D000674:Amputees / Q000534:rehabilitation*; D000704:Analysis of Variance; D001186:Artificial Limbs; D001696:Biomechanical Phenomena; D018592:Cross-Over Studies; D004526:Efficiency; D005260:Female; D005684:Gait; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D009068:Movement; D017060:Patient Satisfaction; D014741:Video Recording; D016138:Walking