| Summary: | 碩士 === 國立陽明大學 === 復健科技輔具研究所 === 93 === Rehabilitation of tendon rupture after surgery is an impact factor to affect the hand function. The dynamic splint is effectively able to prevent from tendon adhesion, abnormal scar formation and joint contracture. However, the appropriate traction force of dynamic splint is undetermined from previous literatures. Currently, the traction force of dynamic splint was depended on the therapist’s experience. Therefore the purpose of this study was to investigate the biomechanical behavior of repaired tendon (1) elongation at suture position, (2) the tendon excursion, and (3) the force of repaired tendon during dynamic splint treatment.
This study conducted the software ANSYS 8.1 to reconstruct a 3-D finger finite element model (FEM) by 8,744 elements and 10,342 nodes. To investigate the influence on different wound locations as well as different suture techniques, a total of eight FEMs were respectively constructed, consisting of (1)the A2 pulley with Kessler technique subjected to cable force with single stiffness (2)the A2 pulley with Kessler technique subjected to cable force with double stiffness (3)the A4 pulley with Kessler technique subjected to cable force with single stiffness (4)the A4 pulley with Kessler technique subjected to cable force with double stiffness (5)the A2 pulley with Becker technique subjected to cable force with single stiffness (6)the A2 pulley with Becker technique subjected to cable force with double stiffness (7)the A4 pulley with Becker technique subjected to cable force with single stiffness (8)the A4 pulley with Becker technique subjected to cable force with double stiffness.
The FEM results estimated that the A2 region with Kessler technique, and with Becker technique, and the A4 region with Kessler technique were suggested used cable force with single stiffness because it could reach the criteria of within 1mm elongation as well as over 3mm tendon excursion. However, the A4 region with Becker technique needed to impose double cable force since the cable force with single stiffness was not capable of generating enough 3mm tendon excursion.
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