Prosthetic Technology

Author: Geoff

May. 20, 2024

Prosthetic Technology

Body-powered prostheses are indispensable tools that restore the ability to pick up and grasp objects, supporting the user's sound hand. These prostheses are particularly effective when finger loss occurs at the PIP or MCP level. For higher amputation levels, movements of the upper arm, shoulder, and chest are captured and utilized by the harness and cable system to operate the hook or hand, much like a bicycle handbrake system.

If you're seeking more information, you can visit our website for the lower limb prosthesis for sale.

As users become accustomed to the tension variations on the cable, many find an enhanced sense of limb positioning and terminal device opening. Hooks, which can be made of aluminum, steel, or titanium, are often rubber-lined for improved grip. The gripping force of a voluntarily opened hook is determined by the number of rubber bands that keep it closed.

Components of a Body-Powered Prosthesis

Here are the fundamental components of a body-powered prosthesis:

  • A custom-fit socket
  • A terminal device such as a hook or hand
  • A wrist unit
  • A harness and cable system
  • An elbow unit for above-elbow prostheses
  • Both an elbow and a shoulder for shoulder disarticulation prostheses

Many amputees prefer the durability and basic functionality of body-powered prostheses, especially in rugged or wet environments. A custom silicone interface can enhance user comfort and is available in various colors.

For those interested in more specialized components, consider visiting the leading Prosthetic Parts Manufacturer.

Prosthetic Liner Guide: Types, Benefits & More

Often overlooked, prosthetic liners are essential for added comfort and efficiency. These liners significantly improve an amputee's quality of life, making the right choice of material vital for maximum protection and healthy recovery.

PrimeCare, based in Albuquerque and Las Cruces, produces custom prosthetics that cater to individual needs. This guide covers different types of liners, their benefits, maintenance tips, and recent technological advances.

What Is a Prosthetic Liner and Why Is It Important?

A prosthetic leg liner is a lightweight sheath, much like a second skin, made from silicone or other synthetic materials. It fits snugly around an amputee's residual limb for better fitting, increased comfort, and protection against moisture and skin issues. Prosthetic liners also keep prosthetics in place and minimize the risk of sores and itching.

Types of Prosthetic Liners

When considering prosthetic leg liners, two main factors stand out: pliability and durability. Below are some common types:

Durable Silicone Liner

These liners offer non-irritating, comfortable fits and are hypoallergenic. They have excellent shock-absorbing properties, making them a mid-range option with balanced elasticity and durability.

Urethane Liners

Known for their high durability and even pressure distribution, urethane liners are perfect for users with high activity levels, providing improved suspension through a higher tensile stiffness.

Thermoplastic Elastomer (TPE)

Ideal for those with atypical residual limb shapes, TPE liners mold to the limb for ultimate comfort and convenience, absorbing shear forces effectively.

Mineral Oil Gel

Soft and forgiving, mineral oil gel liners are beneficial for those with bony or hypersensitive areas. They protect against rubbing within the prosthetic socket but are less durable compared to other liners.

Polyurethane

With excellent "flow properties," these liners redistribute pressure evenly, providing a comfortable fit, making them suitable for sensitive or scarred limbs and active individuals.

Copolymer

Best for amputees with sensitive skin or low activity levels, copolymer liners offer extra protection, thanks to their soft, cushiony, and highly elastic properties.

Prosthetic Sleeves

Prosthetic sleeves are elastic garments worn over prosthetic limbs to reduce skin irritation and provide a comfortable fit. Made from stretchy materials like spandex or lycra, they often contain fabric liners to reduce sweat and slipping. Some even have pockets for storing small items.

To sum up, a prosthetic sleeve eases the wearing of a prosthetic liner by distributing pressure, reducing volume and friction, and providing an even interface between the limb and the socket.

For more details, please visit the elastic fiber adapter supplier website. We are a one-stop shop for prosthetic needs.

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