Qualification of Wrist Functional Performance During Dart Thrower's Movement

Area of Science:

• Biomechanics
• Orthopedics
• Sports Medicine

Background:

• Wrist joint kinematics are crucial for daily activities.
• The dart thrower's motion is proposed as a comprehensive model for wrist function assessment.
• Traditional range of motion measures may not fully capture dynamic wrist capabilities.

Purpose of the Study:

• To examine wrist movement characteristics during dart throwing using gyroscopic data.
• To quantitatively validate functional wrist performance between healthy controls and post-surgical patients.
• To propose a novel approach for dynamically assessing wrist functionality.

Main Methods:

• Utilized inertial sensors to collect gyroscopic data during dart throwing.
• Employed quaternion representation and a distance metric to describe multi-dimensional dart throwing trajectories.
• Compared functional wrist performance between eight healthy subjects and eight post-surgical patients.

Main Results:

• Silhouette clustering evaluation demonstrated consistency between the proposed quaternion-based distance metric and expert assessments.
• The approach successfully captured relative wrist joint motions, differing from traditional range of motion metrics.
• Quantitative outcomes provided insights into significant changes in wrist joint signatures.

Conclusions:

• The proposed method reliably captures wrist functionality during dart throwing motion.
• This approach offers a dynamic alternative to traditional measures for assessing wrist joint health.
• The findings provide valuable data for understanding wrist joint changes in various clinical scenarios.