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Hand injuries are a frequent problem in actual society. These are often caused while working or exercising, but simple everyday activities can also be the cause. The most common injuries are those related to soft tissue; specifically, muscles, tendons, and ligaments. To improve therapy results and reduce its cost and needed time, a self-rehabilitation system for soft tissue injuries in the hands was developed. The proposed system is meant to be implemented on Smart TVs and can be used in the home of the injured people. To identify the most common movements of the injured limbs, and design proper therapies to be displayed by the system, an exoskeleton prototype which supports four degrees of freedom of the hand was constructed. We examined scenarios to provide services for individuals and created a scenario-based prototype, which was tested by an exercise therapist to verify compliance with the requirements of users.

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The production of interactive multimedia content is in most cases an expensive task in terms of time and cost. Hence, optimizing production by exploiting the reusability of interactive multimedia elements is mandatory. Reusability can be triggered by a combination of reusable multimedia components and the appropriate use of metadata to control the components as well as their combination. In the same way, digital libraries comprise vast digital repositories, a wide range of services, and user's environments and interfaces, all intended to support learning and collaborative research activities. In this article, we discuss the reusability and adaptability aspects of interactive multimedia content in a digital library's learning environment. We extend a component-based architecture to build interactive multimedia visualization within digital library's learning environment with the use of metadata for reusability and customizability.