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RESEARCH Open Access Design of splints based on the NiTi alloy for the correction of joint deformities in the fingers

By Sergio Puértolas, José M Pérez-garcía, Luis Gracia, José Cegoñino, Elena Ibarz, José A Puértolas and Antonio Herrera


Background: The proximal interphalange joint (PIP) is fundamental for the functional nature of the hand. The contracture in flexion of the PIP, secondary to traumatisms or illnesses leads to an important functional loss. The use of correcting splints is the common procedure for treating this problem. Its functioning is based on the application of a small load and a prolonged stress which can be dynamic, static progressive or static serial. It is important that the therapist has a splint available which can release a constant and sufficient force to correct the contracture in flexion. Nowadays NiTi is commonly used in bio-engineering, due to its superelastical characteristics. The experience of the authors in the design of other devices based on the NiTi alloy, makes it possible to carry out a new design in this work- the production of a finger splint for the treatment of the contracture in flexion of the PIP joint. Methods: Commercial orthosis have been characterized using a universal INSTRON 5565 machine. A computational simulation of the proposed design has bee

Year: 2013
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