Novel Procedure for Determining the Finger Force in Flexion Depending on the Finger Position

Abstract Introduction: The design and development of a novel dynamic hand orthosis that allows individual progressive adaptation to the patient’s condition require knowledge about maximum voluntary contraction forces fingers. following work presents test setup procedure for determination isometric finger during flexion depending on various positions tasks. Methods: places fingers in certain (position 0: grasping plate; position 1-3: circular cylinders three different diameters). force measurement is carried out using pressure sensing: A capacitive sensor placed each fingertip. To perform tasks, subjects are asked defined groups single against boundary system. For proof concept, measurements performed with six compared reference values from literature. Results: separated can be captured tasks varying positions. Furthermore, total all active determined. It shown (IMRLtask; 78.4N ± 25.8N, d2) higher than index (25.8N 3.4N, d2). activity IMRL-task. results also show tendency increase increasing flexion. Further investigations may improvements method. In this potential revealed discussed. However, functionality demonstrated.