Title :
Comparison of robotic and clinical motor function improvement measures for sub-acute stroke patients
Author :
Celik, Ozkan ; O´Malley, Marcia K. ; Boake, Corwin ; Levin, Harvey ; Fischer, Steven ; Reistetter, Timothy
Author_Institution :
Dept. of Mech. Eng. & Mater. Sci., Rice Univ., Houston, TX
Abstract :
In this paper, preliminary results in motor function improvement for four sub-acute stroke patients that underwent a hybrid robotic and traditional rehabilitation program are presented. The therapy program was scheduled for three days a week, four hours per day (approximately 60% traditional constraint induced therapy activities and 40% robotic therapy). A haptic joystick was used to implement four different operating modes for robotic therapy: unassisted (U), constrained (C), assisted (A), and resisted (R) modes. A target hitting task involving the positioning of a pointer on twelve targets was completed by the patients. Two different robotic measures were utilized to quantify the motor function improvement through the sessions: trajectory error (TE) and smoothness of movement (SM). Fugl-Meyer (FM) and motor activity log (MAL) scales were used as clinical measures. Analysis of results showed that the group demonstrates a significant motor function improvement with respect to both clinical and robotic measures. Regression analyses were carried out on corresponding clinical and robotic measure result pairs. A significant relation between FM scale and robotic measures was found for both of the analyzed modes. Regression of robotic measures on MAL scores resulted in no significance. A regression analysis that compared the two clinical measures revealed a very low agreement. Our findings suggest that it might be possible to obtain objective robotic measures that are significantly correlated to widely-used and reliable clinical measures in considerably different operating modes and control schemes.
Keywords :
haptic interfaces; interactive devices; medical robotics; patient rehabilitation; Fugl-Meyer scales; clinical motor function; haptic joystick; hybrid robotic; motor activity log scales; rehabilitation program; robotic therapy; smoothness of movement; subacute stroke patients; target hitting task; trajectory error; Haptic interfaces; Medical treatment; Regression analysis; Rehabilitation robotics; Robotics and automation; Robots; Samarium; Shoulder; Tellurium; Wrist; Rehabilitation robotics; haptic assistance; motor function recovery; stroke measures;
Conference_Titel :
Robotics and Automation, 2008. ICRA 2008. IEEE International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-1646-2
Electronic_ISBN :
1050-4729
DOI :
10.1109/ROBOT.2008.4543585