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Robotics in Neurorehabilitation: Beyond the Hype—Understanding What It Can (and Cannot) Do

Dr. Rishabh Pathak
Over the past decade, robotic neurorehabilitation has become one of the most discussed innovations in neurological recovery. Robotic gait trainers, upper-limb rehabilitation systems, exoskeletons, and AI-assisted rehabilitation devices are increasingly being adopted by hospitals and rehabilitation centres worldwide. However, an important question remains: Are robots the future of neurorehabilitation—or are they simply another tool in the rehabilitation toolbox? As clinicians and researchers, we must move beyond marketing claims and focus on scientific evidence, patient selection, and clinical reasoning. What is Robotic Neurorehabilitation? Robotic neurorehabilitation involves the use of electromechanical devices that assist, guide, resist, or augment movement during therapy. These technologies include: • Robotic gait trainers • Wearable exoskeletons • Upper limb robotic rehabilitation devices • End-effector robotic systems • Sensor-based rehabilitation platforms • AI-assiste...
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Formal Problems in Biomechanics

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Dr. Rishabh Pathak


Formal problems in biomechanics typically involve applying mathematical and physics principles to analyze and solve complex biomechanical scenarios. These problems often require a deep understanding of human movement, forces, torques, energy, and motion analysis. Here are some examples of formal problems in biomechanics:


1.     Joint Forces and Torques: Calculate the forces and torques acting on a specific joint during a particular movement, such as knee forces during squatting or shoulder torques during overhead throwing.


2.     Muscle Moment Arms: Determine the moment arms of muscles around a joint to analyze their mechanical advantage and contribution to joint movement and stability.


3.     Center of Mass Calculations: Calculate the center of mass of a body segment or the whole body in different positions to understand balance, stability, and movement coordination.


4.     Impulse-Momentum Analysis: Use impulse-momentum principles to analyze the forces and accelerations involved in a specific movement, such as jumping, running, or throwing.


5.  Energy Expenditure Calculations: Calculate the energy expenditure during different activities or exercises based on metabolic equations, work done, and power output.


6.  Gait Analysis: Analyze the kinematics and kinetics of human gait to assess walking or running patterns, joint angles, ground reaction forces, and muscle activations.


7.   Projectile Motion: Solve problems related to projectile motion, such as calculating the range, height, velocity, and angle of projection of a thrown object or a jumping athlete.


8.   Mechanical Work and Power: Calculate the mechanical work done and power generated by muscles during specific movements or exercises, such as lifting weights or cycling.


9.   Stress and Strain Analysis: Analyze the stress and strain distribution in bones, tendons, or ligaments under different loading conditions to assess injury risk and mechanical properties.


10. Biomechanical Modeling: Develop biomechanical models to simulate and analyze complex movements, such as sports techniques, rehabilitation exercises, or ergonomic tasks.


These formal problems require a combination of theoretical knowledge, mathematical skills, data analysis techniques, and critical thinking to derive meaningful insights into human movement mechanics and performance. By practicing formal biomechanical problems and applying analytical approaches, researchers, practitioners, and students can deepen their understanding of biomechanics and enhance their problem-solving abilities in this interdisciplinary field.

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