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Knee braces can provide support to the knee joint. People may find these products beneficial following surgery or injury.

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Knee braces are devices that provide support, stability, or pressure on or around the knee. Often, their purpose is to provide support during injury recovery or help prevent an injury from worsening.

Learn more about common knee injuries.

A person can find knee braces for sale online or in certain physical stores. Individuals may wish to speak with a doctor, physical therapist, or another healthcare professional before purchasing knee braces to ensure they have the correct support for their needs.

There are many types of knee braces. Some may offer more support for a particular area of the knee.

A 2019 study defined four main types of knee braces:

  • Functional braces: Reduce instability in the knee and protect and support the knee joint following an injury.
  • Prophylactic braces: People can wear these braces to help prevent or reduce the severity of knee injuries during contact sports.
  • Patellofemoral braces: Resist lateral displacement of the knee cap, decrease knee pain, and maintain alignment of the knee ligament.
  • Rehabilitative braces: Allow a person to have protected movement following an injured or surgically repaired knee.

The researchers of this study note that newer innovations in knee braces may add additional types and subtypes of braces that better describe their function. Therefore, people may wish to speak with their physical therapist or doctor to discuss which knee brace to use.

Knee braces can be a helpful therapeutic tool to provide support and pain management. A person or their doctor may consider knee braces to help with one or more of the following issues:

  • overuse injury to the knee
  • acute injury to the knee
  • following surgery
  • support for osteoarthritis

Sometimes, people use knee braces to prevent injury. However, some evidence suggests that prophylactic braces that provide injury protection may not work.

In a 2010 review, researchers found that the use of preventative knee braces lacked sufficient support. The authors also note that evidence supporting the use of preventative knee braces had biases and limited high-level studies.

More recent evidence also suggests little value in preventative knee bracing. In a 2018 study, researchers tested how prophylactic braces protected the joints on human limbs. Their findings indicate that both rotational movements of the knee or anterior impacts may both be safer for the person when not wearing a brace.

A person can consult with their doctor, physical therapist, or another healthcare professional about the best brace for their particular injury or condition before purchasing this type of product. Healthcare practitioners may be able to direct people to the correct support for their individual needs.

Some additional factors to consider when purchasing a knee brace include:

  • Materials: Some materials release moisture and are more sturdy or feel better than others, all of which can affect comfort.
  • Cost and insurance: Insurance may not cover all knee braces — most plans will require a prescription to cover at least some of the costs. Medicare Part B may help cover the costs of some medical equipment. A person can check with their insurance before purchasing a knee brace to make sure they cover the desired brace.
  • Type: Different types of knee braces may be more beneficial for certain injuries or conditions.
  • Support: Knee braces may support the outside or middle of the knee. Some knee braces may specify which area they support.
  • Size: Knee braces can come in a variety of sizes to accommodate different legs.
  • Left or right knee: Some braces are only suitable for the right or left knee.
  • Warranties and shipping: Companies may offer free shipping and warranties.

These knee braces may help with stabilizing the knee, offering pain relief, and providing extra support.

Please note, the writer has not tested these products. All information is research-based.

ELITE Bio-Logix Knee Brace

McDavid’s ELITE Bio-Logix Knee Brace is a functional brace. The company says it can help with pain relief and provide stability and support for most knee injuries.

The brace has the following features:

  • suitable for the right or left knee
  • various size options
  • additional compression sleeve

McDavid states that it has a flexible return policy and will consider returns and exchanges on a case-by-case basis.

DonJoy Advantage Deluxe Elastic Knee Brace

The DonJoy Elastic Knee Brace is a compression sleeve. The company states that the sleeve is suitable for those with mild sprains, strains, arthritis, swelling, and patellofemoral syndrome.

The sleeve comes in four size options and two colors. Additional features include:

  • suitability for both knees
  • expansion panels for freedom of movement
  • a slip-on design
  • an elastic band hem to stop migration

DonJoy offers a 30-day money-back guarantee. However, customers need to pay for return shipping.

McDavid Knee Support/Double Wrap

McDavid’s Knee Support/Double Wrap knee brace is lightweight and breathable. The company states this product is suitable for patellofemoral pain.

This brace has the following features:

  • fits either knee easily
  • comes with a strap for stabilization and a strap for compression
  • a lightweight design

McDavid’s return policy is flexible and operates on a case-by-case basis.

Superior Braces OA Unloader Knee Brace

The Superior Braces OA Unloader Knee Brace offers support for arthritis pain. The brace features:

  • a universal fit
  • suitability for the left or right leg
  • left leg support on the outside of the knee
  • right leg support in the middle of the knee
  • single strap adjustment
  • lightweight and low profile

Amazon’s return policy applies to this product.

Shock Doctor Ultra Knee Brace with Bilateral Hinges

Shock Doctor’s Ultra Knee Brace with Bilateral Hinges may provide pain relief, stability, and injury prevention. It also comes in several adult sizes.

The brace’s features include:

  • shock absorption
  • support for either knee
  • adjustable straps
  • support for conditions such as anterior cruciate ligament (ACL) injuries, patella instability, hyperextension, and ligament sprains

Shock Doctor’s return policy is flexible — the company states it will approach returns and exchanges on a case-by-case basis.

The knee plays an important role in movement and supporting the body. It is also prone to injury due to overuse and accidents. The most common types of injuries include ligament tears, fractures, sprains, and dislocations.

In a 2019 study, researchers found that rehabilitative functional knee braces helped improve outcomes and protect the knee during the healing process. The researchers noted that newer innovations in functional knee braces provided an improvement over older, static models.

However, a 2020 study investigating the effects of knee braces on ACL injuries found both soft and rigid braces can lead to increased internal rotation, which has links to instability and unnatural cartilage loading.

Another study from 2019 also recommended against the use of knee braces for ACL injuries. The researchers found that the braces did not help improve the clinical outcomes of people with ACL-reconstructed knees.

Arthritis support

The Arthritis Foundation states both rheumatoid arthritis and osteoarthritis can affect a person’s knees. Knee braces can help support an individual with arthritis in this joint.

Knee braces may provide the following benefits:

  • helping relieve kneecap pain
  • supporting proper knee alignment
  • helping ligaments heal
  • improving confidence in the joint

A 2017 study examined the effectiveness of a soft knee brace on arthritis in the knee. The researchers found that they improved self-reported pain levels, activity restrictions, confidence in the knee, and knee stability.

Learn more about arthritis in the knee.

The following are some frequently asked questions about knee braces.

Can a person wear knee braces all day?

A person should follow a healthcare professional’s instructions about how long they should wear a brace. Individuals should also adhere to all instructions when putting the knee brace on to ensure proper fit.

Do knee braces weaken knees?

While knee braces usually aim to provide support and alignment, they can also help with pain relief by offering slight pressure. Knee braces do not cause a person’s knees or legs to weaken and can encourage healing and rehabilitation.

A person should not self-diagnose knee pain or discomfort. When experiencing new or different pain, an individual should make an appointment with their doctor. A healthcare professional may be able to determine the cause of the knee pain and offer recommendations for the best brace to buy.

If knee pain worsens or does not improve, people can revisit their doctor or physical therapist. Healthcare professionals may recommend further treatment.

Knee braces can offer support and symptom relief to people with knee injuries or arthritis. A person may wish to work with their doctor or physical therapist to determine which type of brace will work best for their needs.

Individuals should immediately contact a doctor if their knee pain does not get better or worsens when using a knee brace.