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Functional finger upper-limb orthoses designed to make possible and/or improve the functional activities of the metacarpo-phalangeal finger (MP) joints during common daily activities. These devices also provide active thumb use and they facilitate the functional use of the hand. These orthoses (known ulnar deviation splint orthoses) typically consist of semi-rigid devices with plastic and/or aluminum finger rings. The orthoses may include hinges at the MP joints to make it possible flexion and extension of the joints providing unimpeded grasp and pinch. Functional ulnar deviation splint orthoses are intended for patients with ulnar deviations at the MP joints, frequently due to arthritis diseases.
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