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A biomechanical study of normal functional wrist motion.
Clinical Orthopaedics and Related Research
|July 1, 1984
Summary
This study determined the optimal wrist motion for daily activities. Most tasks require 10° flexion to 35° extension, providing a basis for evaluating wrist function and developing prostheses.
Area of Science:
- Orthopedics
- Biomechanics
- Human Factors Engineering
Background:
- Understanding the functional range of wrist motion is crucial for assessing disability and designing implants.
- Previous studies have not comprehensively quantified wrist motion during activities of daily living (ADLs).
Purpose of the Study:
- To objectively determine the range of wrist motion (ROM) required for common activities of daily living (ADLs).
- To establish an evidence-based range for functional wrist movement.
- To inform the design of wrist prostheses and surgical interventions.
Main Methods:
- Nineteen healthy adults participated in the study.
- A uniaxial electrogoniometer was used to measure wrist motion.
- Participants performed 15 distinct activities of daily living.
Main Results:
- Personal care activities required wrist motion from 10° flexion to 15° extension.
- General activities like eating and reading involved wrist motion from 5° flexion to 35° extension.
- The optimal functional wrist motion for most ADLs was identified as 10° flexion to 35° extension.
Conclusions:
- The determined functional wrist ROM provides an objective standard for evaluating wrist impairment.
- This data can guide the selection of optimal wrist positions for arthrodesis (surgical fusion).
- Findings will aid in the development of improved wrist arthroplasties (joint replacements) and prostheses.