Why Having a Robotic Third Arm Is Closer Than You Think

how close are we to robotic limbs

Having an extra robotic arm might soon become as routine as carrying a smartphone. Sounds extreme, right? It might not be so far-fetched anymore.

Think about how much easier it would be to multitask or accomplish tasks if you had an extra limb. But this isn’t just a dream. Thanks to the advances made in robotics, we might soon realize this dream.

The University of Chicago conducted a study demonstrating a brain-computer interface enabling users to control robotic arms with their thoughts.

The technological advancements in robotics have enabled the replication of human movements and enhanced them with sensory feedback. This brings us closer to the reality of having a robotic third arm. This article explores why having a third robotic arm is closer than you think.

The Concept of a Robotic Third  Arm

A robotic third arm is an artificial limb that imitates a human arm’s functions. It is either integrated into a person’s body or used with their existing limbs.

how far have robots come

Unlike prosthetic arms, mainly used to replace lost or non-functional limbs, robotic third arms enhance human capabilities by providing additional reach, agility, or strength.

The purpose of a robotic third arm can vary depending on the specific application. Still, generally, its main functions include:

  1. Augmented Productivity

A robotic third arm can assist individuals in completing tasks more efficiently by providing additional support for holding objects, tools, or equipment.

This can be particularly helpful in manufacturing, construction, or healthcare, where tasks often require multiple simultaneous actions.

Companies like ABB and FANUC produce robotic arms for industrial automation purposes. These robotic arms are used in manufacturing plants to perform assembly, welding, and material handling tasks.

  1. Rehabilitation and Therapy

In healthcare settings, robotic third arms can be used for rehabilitation to assist patients in regaining motor control and strength following injuries or surgeries. These devices can provide targeted support and feedback during therapy sessions, facilitating recovery.

Robotic exoskeletons, such as those developed by Ekso Bionics, are used in medical rehabilitation settings to assist patients with mobility impairments. These exoskeletons provide powered assistance to help individuals regain strength and mobility in their arms and legs after injuries or surgeries.

  1. Enhanced Accessibility

For individuals with disabilities or physical limitations, a robotic third arm can offer increased independence and mobility. By compensating for missing or impaired limbs, these devices can help users perform daily activities with greater ease and confidence.

Companies like Ossur have developed advanced prosthetic arms with robotic components that offer greater functionality and flexibility than traditional prosthetics.

These robotic arms can be controlled by muscle signals or other advanced control mechanisms, allowing users to perform intricate tasks precisely.

The Potential of Robotic Arms

Recent advancements in robotic arm technology demonstrate significant versatility, agility, and adaptability. Here are some noteworthy breakthroughs and creations:

  1. Soft Robotics

Advancements in soft robotics have led to the creation of flexible and compliant robotic arms that can interact safely with humans and handle fragile objects.

Due to their rigidity, traditional robotic arms cannot interact with delicate objects or navigate complex environments.

However, the Harvard Biodesign Lab has developed the “Soft Robotic Gripper,” which uses soft materials and pneumatic actuators to grasp objects gently, mimicking the capabilities of a human hand.

  1. Brain-Computer Interfaces (BCIs)

Researchers have made considerable advancements in creating Brain-Computer Interfaces (BCIs) that allow users to control robotic arms using their thoughts.

For instance, the BrainGate project, led by researchers at Brown University, has developed a neural interface system that enables individuals with paralysis to control robotic arms.

This breakthrough has allowed them to perform tasks such as drinking from a cup or feeding themselves, significantly enhancing their quality of life.

  1. Collaborative Robots (Cobots)

Collaborative robots, or cobots, are designed to work alongside humans without protective barriers.

These cobots come equipped with advanced sensors and control algorithms that allow them to detect and respond to human presence, reducing the risk of injury in shared workspaces.

Universal Robots and Rethink Robotics have developed cobots for various industries, including manufacturing, logistics, and healthcare.

  1. Enhanced Sensory Feedback

Recently, researchers have been working on integrating sensors and haptic feedback systems into robotic arms to provide users with a sense of touch and proprioception.

The LUKE arm, developed by DEKA Research and Development, is an example of such a prosthetic arm. It incorporates sensors and actuators that give users tactile feedback, allowing them to grasp and manipulate objects more easily and naturally.

Challenges and Ethical Considerations

Technical Challenges

Researchers and engineers are working to overcome various technical challenges in creating and implementing functional robotic arms. Notable among the difficulties include

Dexterity and Manipulation.

One of the main challenges in designing robotic arms is achieving the same level of dexterity and manipulation capabilities as human arms and hands.

Even though robotic arms can be equipped with multiple degrees of freedom and sophisticated end-effectors, replicating human hands’ intricate movements and tactile sensitivity is still a significant technical challenge.

Sensing and Perception

Robotic arms need precise and dependable sensing and perception abilities to interact with their surroundings and perform tasks independently.

However, integrating sensors into robotic arms that can precisely measure forces, identify objects, and provide real-time feedback can pose technical challenges.

Human-Robot Interaction

It is essential to ensure safe and intuitive interaction between humans and robotic arms to be successfully used in various applications, such as industrial automation, healthcare, and assistive robotics.

However, designing robotic arms that can work collaboratively with humans while avoiding collisions, respecting safety constraints, and understanding human intentions poses technical challenges.

Power and Energy Efficiency

Robotic arms require considerable power to perform tasks efficiently. However, traditional power sources, such as batteries, tend to be bulky, heavy, and limited in energy capacity.

Improving robotic arms’ power and energy efficiency is a significant technical challenge, especially for systems that operate for extended periods without recharging, such as mobile and autonomous systems.

To tackle the technical difficulties in robotics, interdisciplinary collaboration and innovation in areas such as robotics, materials science, and artificial intelligence are vital.

Overcoming these challenges can enable researchers and engineers to unlock the full potential of robotic arms, thereby empowering industries, enhancing human productivity and quality of life, and facilitating new applications and services.

Ethical Implications

The use of robotic arms in everyday life raises several ethical considerations that must be addressed to ensure responsible and equitable deployment of this technology. Some of the key ethical considerations include

Job Displacement

Using robotic arms to perform tasks traditionally carried out by humans can lead to job displacement and economic upheaval in specific industries.

This implies that manufacturing, logistics, and other sectors employees may experience unemployment or job uncertainty as robotic arms become more skilled and cost-effective.

Inequality and Access

The benefits of robotic arm technology may be unevenly distributed, leading to further inequality between individuals and communities.

Factors such as cost, availability, and accessibility of robotic arms may disproportionately benefit affluent individuals and exacerbate disparities in healthcare, education, and economic opportunity.

Privacy and Data Security

Robotic arms equipped with sensors and artificial intelligence algorithms may collect and process sensitive data about individuals, including personal preferences, movements, and interactions.

Ethical considerations include protecting the privacy and security of individuals’ data, obtaining informed consent for data collection and use, and implementing robust cybersecurity measures to prevent unauthorized access and misuse of data.

To ensure that robotic arms’ development, deployment, and use in daily life align with ethical considerations, policymakers, industry stakeholders, researchers, and the public must collaborate and engage with each other.

This collaboration will help establish responsible guidelines, regulations, and best practices for using robotic arms. By proactively addressing ethical concerns, we can unlock the potential of robotic arms to improve human well-being, increase productivity, and promote social and economic equity.


The potential and value of robotic arm technology are immense and transformative. Advancements in robotics have brought us closer to a future where having a robotic third arm is not just a dream but a practical reality.

Robotic arms can enhance productivity and accessibility and revolutionize healthcare and rehabilitation to improve human well-being and quality of life.

Although there are technical challenges and ethical considerations, researchers and engineers are making remarkable progress in overcoming obstacles and pushing the boundaries of innovation.

It’s inspiring to envision a future where humans and machines work together seamlessly, augmenting each other’s capabilities and unlocking new possibilities.

Join Our Tech Community!

Subscribe & get an instant FREE gift! + receive news, updates, and special gifts straight to your inbox.

You Might Also Like

Where Should We Send The Gift?

Provide your name and email, and we’ll send the guide directly to your inbox!

How to Create the Perfect ChatGPT Prompt for Precise Answers!

Crafting an effective prompt is a learnable skill. Your choice of words in the prompt directly influences ChatGPT’s responses. This guide will show you the key elements for getting the right response.