Prosthesis with hydraulic and pneumatic joints

Prosthetic technology is becoming more innovative each day, aiming to enhance the quality of life for users. Prostheses with hydraulic and pneumatic joints are one of the most significant components of this advancement. So, what exactly are these prostheses, how do they work, and how do they make our lives easier?

What are Prostheses with Hydraulic and Pneumatic Joints?

Prostheses are designed to mimic a lost part of the body. Prostheses with hydraulic and pneumatic joints are specifically developed for joint areas such as the knee and elbow.

Hydraulic prostheses use fluids to facilitate movement, while pneumatic prostheses achieve controlled motion through air pressure. Both types provide users with more natural and fluid mobility.

Prices of Prostheses with Hydraulic and Pneumatic Joints

Prosthesis prices can vary depending on the technology, materials, and brand used. On average, hydraulic prostheses range between 6700 USD and 16800 USD, while pneumatic prostheses are priced between 4200 USD and 9250 USD. Microprocessor-controlled prostheses tend to be more expensive.

Hydraulic and Pneumatic Connection Prosthesis Types

Hydraulic joint prostheses are ideal for individuals who engage in sports or lead an active lifestyle. Their fluid-based systems adapt to rapid movements.

Hydraulic prostheses operate by circulating fluid between joints, resembling car shock absorbers. Pneumatic prostheses, on the other hand, utilize compressed air to facilitate movement.

These systems can automatically adjust to the user’s weight and movement dynamics. If we were to list these prostheses:

3R31 Prosedo

The Prosedo 3R31, featuring a mechanically locked knee joint with hydraulic sitting support functionality, is an ideal prosthetic solution, particularly for older users. The hydraulic sitting support, which can be individually adjusted according to the user’s body weight, makes sitting on a bed or chair much easier. When the manual locking mechanism is released, the resistance during bending is controlled, facilitating a smooth and supported sitting process. This allows the user to distribute their weight evenly between the prosthetic leg and the sound leg.

These features not only improve balance but also reduce the load on the sound side, enhancing user comfort and long-term health. The Prosedo 3R31 offers an innovative design aimed at improving the daily quality of life for elderly users.

3R60 EBS

Safety and comfort are primary expectations in the use of prosthesis. A natural and healthy walking pattern is important for users to be able to move comfortably in their daily life activities. The 3R60 EBS Knee Joint developed by Ottobock is designed to meet these requirements. 3R60 offers a safe, comfortable and natural walking experience thanks to EBS (Ergonomically Balanced Stride) technology. Its multi-axial structure increases movement efficiency by optimizing the lifting of the foot from the ground during the step. This feature allows the user to walk at various speeds and is particularly recommended for individuals with mobility levels between 2 and 3. 3R60 is an ergonomic and innovative prosthetic joint solution to improve users’ quality of life.

3R80

Knee joints designed with a mono-centric structure and rotational hydraulic technology aim to meet the daily needs of prosthetic users, offering safe and effective use at varying speeds. Continuously developed to support users’ independent mobility, these joints provide maximum comfort and safety for everyday activities.

Based on the principle of rotational hydraulics, the 3R80 knee joint is a suitable option for users with a body weight of up to 150 kg. Thanks to hydraulic control in both the stance and swing phases, it delivers an experience that closely resembles a physiological walking pattern at varying speeds. This feature facilitates challenging movements such as descending stairs alternately or climbing inclines, enhancing the user’s freedom of movement.

Additionally, the 3R80 stands out with its water resistance up to a depth of 3 meters and a manual locking function for increased safety on wet surfaces. This innovative design is developed to enhance the quality of life for prosthetic users, enabling them to perform daily activities more independently.

3R106 PRO

The modular knee joint offers a prosthetic solution suitable for all amputation levels, from knee disarticulation to hemipelvectomy. Users with a moderately active lifestyle and an interest in physical activities can benefit from the advantages provided by the mechanical 3R106 Pro knee joint.

The servo-pneumatic control system enables smooth and fluid transitions between different walking speeds. Designed for body weights of up to 125 kg, the 3R106 Pro offers a robust and durable experience for long-term use. Its needle bearing technology enhances the joint’s durability with low wear characteristics, ensuring long-term reliability.

The 3R106 Pro is an innovative prosthetic knee joint developed to optimize mobility and allow users to perform daily activities more naturally and comfortably.

7E9

The Ottobock 7E9 is an advanced knee prosthesis supported by microprocessor technology. By analyzing movements in real time, it provides natural and balanced motion for activities such as walking, running, and climbing stairs. Made from lightweight and durable materials, it offers comfort for both daily use and outdoor activities.

With its energy recovery system, it allows extended use with less effort. Its customizable settings can be optimized to meet the user’s specific needs, ensuring comfort and performance.

It is an ideal choice, particularly for individuals with an active lifestyle and athletes.

HELIX 7E10 Hip joint

The HELIX 7E10 prosthetic joint is an innovative solution specifically developed for users with a body weight of up to 100 kilograms. It is designed to enhance the daily quality of life for individuals who have undergone hip disarticulation or hemipelvectomy (amputation at the pelvic region).

This prosthesis not only provides a high level of comfort and safety but also supports freedom of movement with a natural walking pattern. Its advanced technology significantly reduces the risk of falls while ensuring optimal sitting and posture features for maximum comfort during both daily activities and periods of rest.

With its dynamic structure and ergonomic design, the HELIX 7E10 offers a unique experience, raising the standards of living for its users.

Össur Mauch Knee Plus

Össur has developed a special version called Mauch Knee Plus for users with heavy load-bearing needs. This model incorporates the advanced technology used in the standard Mauch Knee while being optimized for individuals requiring a higher weight capacity.

Retaining all the features of the standard model, the Mauch Knee Plus offers a more durable and robust frame, making it a suitable option for users weighing up to 166 kg.

Total 2100

The Total Knee 2100, designed by Össur, is a multi-axial knee prosthesis with 3-phase hydraulic swing control, developed to provide superior durability against the challenges faced by more active prosthesis users.

Compared to the Total Knee 2000 model, it offers a 25% increase in hydraulic fluid capacity and a reinforced metal frame, ensuring higher control, maximum efficiency, superior safety, and durability.

The multi-axial joint structure, designed to adapt to high impact levels, varying speeds, and heavy loads, offers the following advantages:

The geometric locking system provides enhanced safety during movement.
Increased hydraulic fluid capacity enables faster and safer movement.
Adjustable stance phase flexion and extension resistance settings provide personalized comfort and control for the user.

This innovative design offers a safer, more efficient, and more durable solution for users with an active lifestyle.

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Frequently Asked Questions

What is the difference between hydraulic and pneumatic joint prosthetics?

Hydraulic prosthetics operate using fluid pressure, while pneumatic prosthetics work with air pressure. Hydraulic systems are stronger, whereas pneumatic systems are lighter.

Are the maintenance requirements for these prosthetics difficult?

No, with regular maintenance and cleaning, they can be used for a long time.

How long does it take to learn how to use a prosthesis?

This period can vary from a few weeks to a few months, depending on the individual’s adaptation ability and the type of prosthesis.

What are the advantages of microprocessor-controlled prosthetics?

These prosthetics contain smart sensors that make movements more natural and enhance the user’s quality of life.

Do hydraulic and pneumatic prosthetics come with a warranty?

Yes, they typically come with a warranty of 2 to 5 years.

Things to Consider for Prosthesis Users

There are several points to consider while using a prosthesis:

Maintenance and cleaning should be done regularly.
The prosthesis should be used according to the manufacturer’s instructions.
Expert supervision should not be neglected.

"As someone who has tried various prosthetic models for many years, I found the performance of hydraulic-jointed prosthetics to be quite impressive. Their natural mobility and durability have provided great comfort in my daily life. I am particularly pleased with them when climbing stairs and during long walks."

Since I started using a pneumatic-jointed prosthesis, my physical activities have become easier. Its lightweight structure allows me to use it comfortably for long hours. Additionally, its silent operation has increased my comfort in social settings.

"I was undecided when choosing between hydraulic and pneumatic prosthetics, but based on expert advice, I chose the hydraulic prosthesis. The stability and quick response time it provides during sports were very important to me. My movements are now more controlled and fluid."

"The pneumatic-jointed prosthesis was an excellent choice for me, especially due to its lightweight and easy maintenance. Although there was a bit of an adjustment period during the initial use, it quickly felt natural. I now feel much freer when doing my daily tasks than I did before."

"I use a microprocessor-controlled hydraulic prosthesis equipped with advanced technology, and this device has improved my quality of life more than I expected. With both its durability and customizable features, it provides an excellent experience in my daily life. I've definitely gotten great value from my investment."

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