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Questions and Answers
Which position is optimal for static orthoses?
What is imperative for prehension and grasp with dynamic orthoses?
Which fingers remain the primary target for grasp and prehension in dynamic orthoses?
Which joints are responsible for producing 85% of intrinsic digital flexion?
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Which joints are the most important for finger function as they contribute 77% of total arc of finger flexion?
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What percentage of overall arc of finger motion do the PIP joints contribute?
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True or false: PIP joints produce more intrinsic digital flexion than the MP joints?
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True or false: The arc from 45-90 degrees provides normal function relatively for finger motion?
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True or false: The PIP joints contribute 20% to the overall arc of finger flexion?
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What percentage of overall hand function does the thumb provide in an uninjured patient?
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What are the top concerns for positioning and optimization of web space in prehension?
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How are orthoses divided based on their purpose?
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True or false: The thumb provides 50% of overall hand function in an injured patient?
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True or false: Orthoses can only serve therapeutic purposes?
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Study Notes
Orthoses Positioning and Function
- Optimal position for static orthoses promotes comfort and alignment, enhancing healing.
- Key for prehension and grasp with dynamic orthoses is the ability to flex and extend effectively.
- Primary target for grasp and prehension in dynamic orthoses includes the thumb and index fingers.
Joints and Finger Flexion
- Joints responsible for 85% of intrinsic digital flexion are the metacarpophalangeal (MCP) joints.
- The most important joints for finger function, contributing 77% of total finger flexion arc, are the proximal interphalangeal (PIP) joints.
- PIP joints contribute approximately 50% of the overall arc of finger motion.
Statements on Joint Function
- True: PIP joints produce more intrinsic digital flexion than MCP joints.
- True: The arc from 45-90 degrees constitutes normal function for finger motion.
- False: PIP joints contribute 20% to the overall arc of finger flexion; they contribute around 50%.
Thumb Functionality
- In an uninjured patient, the thumb accounts for 40% of overall hand function.
- In an injured patient, the thumb provides approximately 50% of overall hand function.
Prehension and Orthotic Purpose
- Top concerns for positioning and optimization of web space in prehension include maintaining hand function and comfort.
- Orthoses are divided based on their purpose: therapeutic, functional, or protective.
- False: Orthoses can serve multiple purposes, including but not limited to therapeutic applications.
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Description
Test your knowledge of wrist orthoses with this quiz! Learn about the optimal positioning for static and dynamic orthoses, the importance of wrist flexion for prehension and grasp, and the target control for finger range of motion. Keywords: wrist orthoses, static orthoses, dynamic orthoses, prehension, grasp, finger range of motion.
