Knee Braces for Osteoarthritis: What Does the Evidence Say?

Knee osteoarthritis is a common cause of joint pain, stiffness and reduced mobility, particularly in older adults. As the cartilage in the knee gradually wears down, everyday activities such as walking, climbing stairs or standing for long periods can become difficult. Alongside exercise therapy, weight management and medication, knee braces are often recommended as a conservative treatment. But how strong is the evidence supporting their use?

How Knee Braces Work

Most braces used for osteoarthritis are known as unloader or off-loading braces. These devices are designed to shift pressure away from the damaged part of the knee joint, usually the inner (medial) compartment where osteoarthritis most commonly occurs. By redistributing weight across the joint, the brace aims to reduce pain during movement and improve overall knee function.

Braces may also provide additional stability and improve alignment while walking, which can make physical activity more comfortable.

Evidence from Clinical Studies

Research suggests that knee braces can provide meaningful symptom relief for some people with knee osteoarthritis. Randomised controlled trials have shown that off-loading braces can reduce pain and improve functional scores compared with minimal support or placebo braces.

Some studies have also reported improvements in walking distance and daily activity levels after several weeks of brace use. These findings suggest that by reducing joint load, braces may help people stay more active, which is important for maintaining muscle strength and joint health.

However, the degree of benefit varies between individuals. Braces appear to work best for people with osteoarthritis affecting only one side of the knee joint rather than widespread joint damage.

Findings from Systematic Reviews

When researchers combine results from multiple studies, the overall evidence is generally considered moderate. Systematic reviews suggest that knee braces can lead to small to moderate improvements in pain and function, particularly in the short to medium term.

That said, many studies have small sample sizes or differences in brace design, making it difficult to draw firm conclusions about the exact size of the benefit.

Practical Considerations

One challenge with knee braces is long-term use. Some patients stop wearing them due to discomfort, bulkiness or difficulties fitting them under clothing. Proper fitting and guidance from healthcare professionals can help improve comfort and adherence.

The Bottom Line

Knee braces are not a cure for osteoarthritis, but research suggests they can provide symptom relief and improved function for some individuals. They are most effective when used as part of a broader management plan that includes strengthening exercises, physical activity and lifestyle changes. For many patients, they offer a simple, non-surgical option that may help delay more invasive treatments.