A survey of human shoulder functional kinematic representations

Area of Science:

• Biomechanics
• Robotics
• Rehabilitation Engineering

Background:

• Human shoulder kinematics are complex due to a large range of motion (ROM).
• Current kinematic representations often oversimplify the shoulder as a ball-and-socket joint.
• The role of kinematic representations in applications like robot-assisted rehabilitation is often overlooked.

Purpose of the Study:

• To review and evaluate human shoulder functional kinematic representations.
• To assess the suitability of current approaches for high-reliability computational challenges in applications like robot-assisted rehabilitation.
• To propose improved kinematic representation strategies.

Main Methods:

• Systematic literature search and summary of existing research on shoulder kinematics.
• Analysis of current kinematic representations against computational challenges.
• Evaluation of the limitations of simplified kinematic models.

Main Results:

• Existing kinematic representations may not meet the high-reliability computational demands of advanced applications.
• Oversimplified models (e.g., ball-and-socket) are inadequate for complex shoulder function.
• A need exists for more sophisticated kinematic representations.

Conclusions:

• Current shoulder kinematic representations require enhancement to address computational challenges in fields like robot-assisted rehabilitation.
• Redundant, active, and functionally-oriented kinematic representations are proposed as a solution.
• A shift from reductionist approaches to more comprehensive functional understanding is advocated.