Modern technology has made amazing strides, and myoelectric prostheses are leading the brigade in changing the face of innovative artificial limbs. If you think that advanced artificial limbs that can mimic natural arm or hand movements using your own muscle signals sounds futuristic, then you’re not alone. Think again, because it is already changing lives one futuristic limb at a time.
But you may ask: Is a myoelectric prosthesis the right solution for you, in case you require one?
In this blog, we explore what a myoelectric prosthesis is, how it works, and what training for it entails along with other related topics.
What Is a Prosthesis?
A prosthesis is an artificial limb or body part specifically designed so that it can replace an amputated arm, leg, hand, or foot. Prosthetic limbs are used following an amputation because of an injury, disease or genetic defects. Prostheses enable individuals to regain mobility and perform daily activities, such as writing, gripping, or typing.
The word “prosthesis” has roots in the Greek language. It comes from the word prostithenai, meaning “to add” or “to place before.” In medicine, it indicates adding something to the body to replace what is missing.
What Is a Myoelectric Prosthesis?
A myoelectric prosthesis is a high-tech artificial limb that uses electrical signals from the muscles in your residual limb and controls movement. In other words, the user’s body instructs the prosthetic arm or hand to open, close, grip, or rotate.
Myoelectric limbs do not depend on harnesses or cables; they provide natural motion and a better appearance.
Who Can Use a Myoelectric Prosthesis?
Myoelectric prostheses should be ideally used by people who have upper limb amputations below the elbow (transradial) or above the elbow (transhumoral). The person needs:
- Good muscle control in the residual limb
- Healthy skin where sensors can be placed
- Motivation and training, and adaptation
Adults and older children can both use a myoelectric prosthesis to get a natural, improved movement
What Are Myoelectric Hands?
Myoelectric hands are one of the most advanced types of prosthetic devices. They work using the electrical signals from your muscles to control the hand’s movements.
There are two types of myoelectric hands:
1. Single-Motor Hands
These can only open and close, so they’re great for simple tasks like gripping objects. A big benefit is that they can be covered with a lifelike glove, so they look very natural and realistic.
2. Multi-Articulating Hands
These are more advanced. The fingers can move individually, allowing for more complex tasks like typing, lifting small items, or using a smartphone. They often come with multiple grip settings for different activities. Popular multi-articulating myoelectric hands include:
- TASKA Hand: tough and waterproof
- Bebionic: known for natural grips and precision
- i-limb: customisable via a mobile app
- Michelangelo Hand: offers smooth, natural movement
These hands come in different sizes and styles and can be matched to your needs for daily life, work, or even sports.
Components of a Myoelectric Prosthetic Arm
A myoelectric prosthetic arm is a special kind of artificial arm that moves by using the small electric signals from your muscles. Main parts that make it work:
- Electrodes to pick up signals from muscles.
- A battery to power the system.
- Motors for moving the fingers, wrist, or elbow.
- A microprocessor to read muscle signals and instruct the motor.
- Socket is the part that fits over your limb and holds everything together.
- Outer shell or glove for a natural look.
- Prosthetic components which could be mechanical or advanced digital/electronic versions such as; hand, wrist joint, elbow joint and shoulder joint.
How Does a Myoelectric Hand Work?
A myoelectric hand uses natural electrical signals from the user’s muscles to control movement. The user, by contracting the muscles in their residual limb, gives out signals which are detected by small sensors in the prosthetic. The signals are processed and conveyed to tiny motors inside the hand. Consequently, it allows it to open, close, or grip like a real hand.
Why Choose a Myoelectric Hand or Arm?
You can choose a myoelectric hand or arm for more functionality, natural appearance, and independent movement.
Key Benefits:
- Natural movement of fingers and wrist
- Improved grip control and strength
- No harness needed, lesser strain
- Better appearance, sleek, skin-toned design
- Multiple grip patterns (some devices offer programmable grips)
Myoelectric limbs are preferred for transradial (below-elbow) and transhumeral (above-elbow) amputations. They offer freedom that mimics the body’s natural motion.
Myoelectric Prosthesis Training: What to Expect
Training is essential to get the most from your prosthesis. After fitting, users undergo myoelectric prosthesis training to learn how to control movements using residual muscle signals.
Training usually includes:
- Muscle strengthening to enhance signal control
- Signal differentiation to operate multiple functions
- Functional tasks such as holding a cup, buttoning a shirt, writing
- Daily maintenance
Are Myoelectric Limbs Suitable For All?
Myoelectric limbs may not suit everyone. Checklist to consider:
- Sufficient muscle signal strength in the residual limb.
- Commitment to training and adaptation
- Desire for functional and cosmetic enhancement.
- Good skin condition for electrode placement.
- Realistic expectations and support system.
- In some cases, those with very high amputation levels or severe skin/scar issues may need alternative solutions.
Myoelectric Prosthesis Products at KARE Prosthetics & Orthotics
At KARE Prosthetics & Orthotics, we offer a carefully curated range of myoelectric prosthetic hands and arms to suit different needs, activity levels, and goals. Whether you’re looking for basic functionality or advanced multi-grip performance, we have the right solution for you.
Popular myoelectric prosthetic solutions:
1. TASKA Hand
- Water-resistant and suitable for regular use
- Strong and durable for active lifestyles
- Multiple grip options for everyday tasks like holding tools or bottles
- Comfortable socket integration
2. Bebionic Hand
- 14 grip patterns supports precision and power grips
- Lightweight reduces strain on the residual limb
- Natural finger movement smooth and controlled
- Available in different hand sizes
3. i-limb Quantum
- Gesture control change grips with a simple motion
- Mobile app connectivity customise grip settings
- Smart features auto-grasp and tap-touch capabilities
- Stylish and cosmetic covers available
4. Michelangelo Hand
- Anatomical design mimics the natural hand look and movement
- Soft grip technology for delicate handling
- Rotating the thumb improves grip functionality
- High-level comfort and control
Why Choose KARE Prosthetics & Orthotics For Myoelectric Prosthetic Limbs?
If you are considering a myoelectric hand to regain precise finger movements or a full myoelectric arm to restore independence in daily tasks, you are in the right place. And the best part? You don’t have to figure it out alone. We offer:
- Personalised fitting and socket design
- On-site myoelectric prosthesis training
- Maintenance and repair support
- Consultant prosthetists with years of experience
- Individual and Compassionate care
If you are looking for the next-gen prosthetic technology that works with your body, not against it? Visit KARE Prosthetics & Orthotics today. Book a consultation to explore myoelectric options.
Frequently Asked Questions
Q: What is the difference between a mechanical and a myoelectric prosthesis?
The primary difference between a mechanical and a myoelectric prosthesis is in the method that they are operated. Mechanical prostheses operate using cables and a body harness. However, advanced myoelectric prostheses utilise electrical motors and electrodes to enhance movement.
Q: What are myoelectric prostheses made of?
Myoelectric prostheses are made from a mix of materials like metals, composites, and polymers for strength and function. Additionally, the prostheses have electronic parts, including motors, batteries, and sensors, for the user to control the hand’s movement with their muscles.
Q: What is the purpose of myoelectric prosthesis?
A myoelectric prosthesis primarily helps to restore functionality to an individual who has lost a limb. The myoelectric prosthesis utilises electrical signals from the user’s muscles to control the movement of the prosthetic limb.
Q: What is the cost of a myoelectric prosthesis?
A myoelectric prosthesis can cost anywhere from ₹2,00,000 to ₹70,00,000+, making it a significant investment, excluding repairs and replacements. The more sophisticated the prosthetic components, such as hand, wrist joint, elbow joint and shoulder joint get, the costs add up.
Q: How long do myoelectric prostheses last?
Myoelectric prostheses may last 3 to 5 years before they have to be replaced; however, the user may need to replace a few components more frequently. Several factors, such as wear and tear, physical changes in the user’s body, can affect lifespan.
Final Thoughts
Choosing a prosthesis is so much more than a medical decision. A myoelectric prosthesis is not a replacement device; it is your lost limb in a new form, offering intuitive control powered by your own body, helping you reconnect with everything from simple tasks to complex movements. This technology adapts to your goals, your lifestyle, and your journey.
At KARE Prosthetics & Orthotics, we specialise in personalised solutions and initial consultation to long-term support; we’re by your side every step of the way.
Book a myoelectric prosthesis consultation with KARE today.
