Top Five Unloader Knee Braces

Thinking about purchasing an unloader knee brace to help with your arthritis? We break down the best and most popular products so you don’t have to.

Popular Unloader Knee Braces

Unloader knee braces can provide powerful relief from osteoarthritis (OA) symptoms. Considered one of the best conservative options out there for treating OA, unloader knee braces can dramatically delay or eliminate the need for knee replacement surgery. They also provide a viable alternative to pharmaceutical drugs and painkillers. This is attractive for those looking to avoid the potentially dangerous side-effects associated with their long term use.

If you search for the term “unloader knee brace” using Google you will find almost 20,000 results. That’s an intimidating amount of products and information to sift through. To make your life easier we have broken down the features and compared five of the most popular products on the market.

Unloader Knee Brace Comparison

If you haven’t purchased an OA Unloader knee brace in the past, it can be confusing to decipher the differences between products. It is important to realize that depending on the type of osteoarthritis you have some braces may provide much greater benefits than others.

Product Comparison of Popular Unloader Knee Braces

Adjustable Fit

As you probably already know OA can be very painful, which often results in the habitual avoidance of placing weight on the injured knee. Overtime disuse and a more sedentary lifestyle can lead to muscle atrophy around the thigh muscles. If you start exercising or working with a physical therapist or trainer, it is possible to regain the lost muscle mass. Given that your thigh may fluctuate in size over time it is important that your brace be adjustable. Interchangeable padding and customizable straps can both help to ensure your brace fits you properly for the long term. Most unloader knee braces are customizable to some degree. While most brace come in different sizes, some of them like the Bregg Solus One and Donjoy OA Defiance can be customized and molded specifically to your leg.

Functional Stabilization (Side-to-Side Stability)

While walking, hiking or going up and down stairs, you may have experienced a feeling of instability in your knee. More specifically, due to malaligned joints and specific muscle weakness, the knee joint often has the tendency to collapse inwards (valgus) or less commonly outwards (varus). An Unloader knee brace with a rigid carbon fibre frame provides support that stops your knee joint from collapsing laterally. This can help you feel more secure when traversing uneven or unpredictable terrain. Ossur’s Unloader One accomplishes while maintaining a minimalist design.

Knee Joint Alignment

Unicompartment Unloading Diagram

A malaligned knee joint is one of the possible contributors to the development of osteoarthritis.1 The poor alignment is usually due to a varus deformity (bow legged appearance) or valgus deformity (knock knee appearance). Unloader knee braces such as the Orthomen OA Unloader can help correct this by repositioning the knee joint. Using a tension strapping system, unloader knee braces actively pull one side of the knee up, while pressing the other side down. This can put the joint into a more normal position – allowing for a more equal pressure distribution on the cartilage.

Partial Pressure Relief (Unicompartment Unloading)

The pain and disability accompanying advanced knee osteoarthritis is the result of inflammation caused by bone on bone friction within the joint . In areas of your knee where the cartilage has worn down, increased pressure creates inflammation and joint irritation. Unloader knee braces can help by re-aligning the joint to take pressure off these areas.

As discussed earlier they do this by re-aligning the knee joint via the braces strapping system. This is an effective solution for those that have unicompartmental OA in either the lateral tibiofemoral compartment or the medial tibial compartment.

Astonishingly, the number of people with this OA in a single knee compartment is extremely low. A recent study showed that among patient’s considering knee replacement:

  • 59% had OA in all three areas (compartments) of their knee.2
  • 28% had OA in two compartments of the knee.2
  • Only 4% had unicompartmental OA.2
Knee Compartment Anatomy Diagram

What does this mean? Due to the technological limitations of traditional bracing technology – less than 4% of OA patients will benefit from braces that offer only uni-compartment unloading (partial pressure relief). Furthermore, if a patient with multi-compartment OA uses one of these braces they risk accelerating damage to other areas of their knee. For most individuals suffering from OA an unloader knee brace that provides total pressure relief (Tri-compartment Unloading) will be safer, supply a better long-term solution, and provide a superior immediate benefit.

Total Pressure Relief (Tricompartment Unloading)

Tricompartment unloading means that all three pressure points of the knee are unloaded simultaneously. This has benefits for all arthritic areas of the joint not just one. For the majority of OA patients this is the ideal solution – weight loss is often recommended for this same reason as it also provides tricompartment unloading.

Contemporary bracing technology is not able to accomplish tricompartment unloading, as it doesn’t reduce the total load on the knee, rather it simply redistributes elsewhere in the joint. Spring Loaded’s Levitation®2 uses a spring loaded hinge, which actively absorbs force as the knee is bent – taking pressure off the entire joint. As far as your knee is concerned this is the equivalent of instantly losing a significant amount of bodyweight. A recent biomechanical study has confirmed that the Levitation knee brace reduces the load on the knee by up to 64%.3 This is currently the only knee brace on the market built to address moderate and severe multi compartment osteoarthritis. It also one of the best option for conservative management of osteoarthritis.

Pain Relief – Squatting, Lunging, Kneeling (Patellofemoral Unloading)

If you have OA in the patellofemoral compartment of your knee, you likely experience difficulty when getting into a deep knee bend. As your knee bends the pressure between the back of your kneecap and the rest of the joint increases dramatically. Braces that provide only tibiofemoral compartment unloading will not be very effective in helping with this issue. Here the Levitation knee brace, due to it’s spring hinge, is better suited to deal with the issue. The more you bend your knees, the more the springs compresses, supporting you in movements like squatting, lunging and kneeling.

Increase Strength

Do you have difficulty getting in and out chairs? Walking up stairs? If so your knee pain is likely negatively impacting your knee strength. This is typically not something that an unloader knee brace is capable of doing. Strength enhancement is more in the domain of exoskeleton technology than knee braces. Currently the Levitation knee brace, again owing to it’s spring hinge technology is the only product in this category that augments knee strength during movement.

Which Unloader Knee Brace is Right for You?

If you have uni-compartment tibiofemoral OA, there are many unloader knee braces that could provide you with benefits. Here you should compare price, aesthetic appeal and comfort. However, if like most individuals you have multi-compartment OA, there is really only one viable option – Levitation.

Tri-compartment unloading is an exciting new treatment for severe knee osteoarthritis. Here rather than replacing the damaged areas, they are unloaded. A new type of knee brace – exoskeleton hybrid brace uses spring technology to provide additional support to the joint, reducing pressure by up to 64%.3 To learn more about this innovation, click the button below.

Or Call 1.877.209.8780 to Speak to a Bracing Specialist

References

  1. Hunter, D. J., Sharma, L., & Skaife, T. (2009). Alignment and osteoarthritis of the knee. JBJS, 91(Supplement_1), 85-89.
  2. Heekin, R. D., & Fokin, A. A. (2014). Incidence of bicompartmental osteoarthritis in patients undergoing total and unicompartmental knee arthroplasty: is the time ripe for a less radical treatment?. The journal of knee surgery, 27(01), 077-082.
  3. McGibbon, C. & Mohamed, A. Knee Load Reduction From an Energy Storing Mechanical Brace. Canadian Society for Biomechanics (2018)