Using the robotic device REAplan as a valid, reliable, and sensitive tool to quantify upper limb impairments in stroke patients

• Published in: Journal of rehabilitation medicine Vol. 46; no. 2; pp. 117 - 125
• Main Authors: Gilliaux, M, Lejeune, T, Detrembleur, C, Sapin, J, Dehez, B, Selves, C, Stoquart, G
• Format: Journal Article
• Language: English
• Published: Sweden 01.02.2014
• Subjects: Aged; Aged, 80 and over; Biomechanical Phenomena; Female; Humans; Kinematics; Male; Manual dexterity; Middle Aged; Neuromuscular Diseases - diagnosis; Neuromuscular Diseases - etiology; Neuromuscular Diseases - rehabilitation; Prospective Studies; Reliability; Reproducibility of Results; Robotics; Stroke - complications; Stroke Rehabilitation; Strokes; Upper Extremity; Upper limbs
• ISSN: 1650-1977; 1651-2081; 1651-2081
• DOI: 10.2340/16501977-1245

To validate a protocol assessing upper limb kinematics using a planar robot among stroke patients. Prospective cohort study. Age-matched healthy subjects (n = 25) and stroke patients (n = 25). Various kinematic indices (n = 44) were obtained from 4 tasks performed by subjects with REAplan, a planar end-effector robotic device. The metrological properties of this protocol were studied. In stroke patients, 43 kinematic indices showed moderate to excellent reliability (intraclass correlation coefficients (ICC) range 0.40-0.95; and minimal detectable changes range 9.9-121.1%). In healthy subjects, 25 kinematic indices showed moderate to excellent reliability (ICC range 0.40-0.91) and 3 indices showed a laterality effect (p < 0.05). Many of these indices (27 of 44) were altered in stroke patients in comparison with healthy subjects (p < 0.05). The Box and Block test (manual dexterity) and Upper Limb Sub-score of the Fugl-Meyer Assessment (motor control) showed moderate to good correlations with, respectively, 13 and 4 indices (r > 0.40). Finally, a principal component analysis allowed the elaboration of a short version of the protocol, reducing the number of indices to 5 (i.e. Amplitude, CVstraightness, Speed Metric, CVjerk metric and CVspeed metric). This study provides a standardized, valid, reliable and sensitive protocol to quantify upper limb impairments in stroke patients, using a planar robot.