Types of Prosthetics and How They Are Chosen

Hearing a list of prosthetic types right after an amputation can feel overwhelming, especially when each one comes with a new name you have never used before.

This guide will walk you through the main types of prosthetics, how they are grouped, and how your care team decides which one fits your body and your goals.

Nothing here is rushed, and neither are you.

How Prosthetic Devices Are Grouped

Prosthetics are grouped mainly by which limb is missing and by how much of that limb remains, which sets the starting point for every other choice.

A prosthesis is an artificial device that replaces a missing body part, and the word prosthetic usually describes the same thing. Knowing a few simple categories makes the rest of this much easier to follow.

Most prosthetic limbs fall into two main categories. Lower limb prosthetics replace part of a leg or foot, and upper limb prosthetics replace part of an arm or hand.

Within each category, the amputation level matters. The amputation level is how much of the limb was removed, measured from a joint such as the knee or elbow.

If these terms feel like a lot at once, that is normal. Every prosthetic is built around your residual limb, which is the part of your arm or leg that remains after amputation.

Lower Limb Prosthetics

Lower limb prosthetics restore standing and walking, and the design depends mostly on whether the amputation is below or above the knee.

Lower limb prosthetics are the most common type, because legs carry your weight and getting back on your feet is often the first goal. The design starts with where the amputation sits.

A below the knee device, called a transtibial prosthesis, replaces the leg below the knee and lets you keep your natural knee. The way these below-knee prosthetic options fit has a direct effect on comfort and balance.

An above the knee device, called a transfemoral prosthesis, replaces the leg above the knee and adds an artificial knee joint. That knee joint mechanism can be a simple hinge or a microprocessor knee that adjusts to your speed, and your team will explain the knee options that suit you.

Every leg prosthesis also includes a prosthetic foot, which is the platform you push off from with each step. The full range of types of prosthetic legs runs from basic walking models to specialized running blades.

Upper Limb Prosthetics

Upper limb prosthetics replace part of an arm or hand and range from simple body powered devices to motorized hands that read your muscle signals.

Upper limb prosthetics restore reach, grip, and the small movements that fill an ordinary day. As with legs, the amputation level shapes the device.

A below the elbow device, called a transradial prosthesis, keeps your own elbow, while an above the elbow device, called a transhumeral prosthesis, adds an artificial elbow. A higher amputation at the shoulder needs a more involved prosthetic arm with more parts to control.

At the end of an arm prosthesis sits the terminal device, which is the hook or hand that does the gripping. A lifelike prosthetic hand can hold a fork, a phone, or a pen with a steady grip.

Arm prostheses are controlled in two main ways. A body powered prosthesis uses a cable and harness moved by your own shoulder, while a myoelectric prosthesis uses motors driven by the electrical signals your muscles make.

How Prosthetics Are Built and Worn

Whatever the limb, a prosthetic is held on by a socket and a suspension system, and its inner frame is either hidden or exposed.

Every prosthetic connects to your body through a socket, the custom shell that fits snugly over your residual limb. A comfortable prosthetic socket reduces pressure points and makes all-day wear sustainable.

A suspension system keeps the device from slipping, using suction, a pin lock, or a sleeve. The right prosthetic suspension keeps the limb secure as you move through your day.

Prosthetics also differ on the inside. Endoskeleton prostheses hide a central support pylon under a soft cover, while exoskeleton designs carry the load in a hard outer shell.

Specialized Prosthetics Beyond Arms and Legs

Prosthetics also restore parts of the body beyond limbs, where comfort and a natural appearance are often the primary function.

Not every prosthesis is built for walking or gripping. Some restore shape, balance, or a sense of feeling like yourself again.

After breast surgery, a breast prosthesis is a soft form worn inside a bra or against the skin to restore shape and balance. Many women explore the practical side of choosing a breast prosthesis with a certified fitter.

Other devices replace an eye, an ear, or part of the face, where a natural skin tone and lifelike detail matter as much as function. Some are low maintenance and worn mainly for appearance, while others restore a real task like speech.

How Your Care Team Picks the Right Type

Your prosthetist matches a type to your amputation level, your activity goals, and how your residual limb changes over time.

With so many types, it is normal to wonder which one is right for you. You do not choose alone.

Your prosthetist often uses a K level, a 0 to 4 rating of your expected mobility, to match components to your functional requirements. A new amputee and a long-time walker may need very different devices, and that is expected.

A few things guide the decision:

• Amputation level – how much of the limb remains and which joints you still have.
• Activity goals – whether you want to walk the dog, return to a physical job, or run.
• Residual limb shape – how your limb is healing and how it changes over the first year.
• Daily routine – the real tasks you do at home, at work, and in between.

Talk to your care team about that daily routine, because the best prosthesis is the one that fits your real day rather than a feature list. Go at your own pace, and ask every question you have.

Moving Forward With Confidence

The many types of prosthetics come down to a few clear questions about which limb, how much remains, and how you want to move.

The many types of prosthetics come down to a few clear questions, which limb is missing, how much of it remains, and how you want to move. Once you can name those, the long list of devices starts to feel manageable.

You do not need to memorize every term today. Both the easy days and the harder days are valid as you learn this new vocabulary.

Start small. Ask questions. Move forward step by step.

Frequently Asked Questions