Stiff Knee
Knee stiffness is the feeling of trouble moving the knee joint or the loss of range of motion in the knee, which impedes your flexibility, strength and stability throughout the entire leg. If you suffer from stiff knees, then you know all about difficulty straightening or bending your knee - not to mention the struggle with walking normally. Stiff knee problems can affect your daily living, so it's important to get a handle on what's causing your knee stiffness for effective treatment.
Common Causes of Knee Stiffness and Pain
There are many causes of stiff knees which can dramatically affect the kind of knee pain treatment your doctor recommends. Oftentimes, the more information you can share about the injury (is there stiffness behind the knee? Stiffness in the front of the knee? Did you recently participate in strenuous activity?), the easier it is to isolate the cause of knee stiffness. In most cases, stiff knees are also accompanied by knee pain.
Trauma to the Knee Joint - A recent injury to the leg, such as a knee sprain, ACL tear, bone fracture, or meniscus tear, may be a factor in knee stiffness. Many knee injuries may swell up as damage to the area causes blood and other fluids fill the joint. This may cause a stiff knee and make the area difficult to bend or straighten. In the case of injury, it is common for both knee stiffness and knee pain to be present at the site of trauma.
Arthritis - One of the most common causes of knee stiffness is arthritis. There are many types of arthritis, but the ones most associated with stiff knees are knee osteoarthritis (the wearing down of the knee joint as we age), rheumatoid arthritis (an auto-immune disease that causes chronic inflammation of the joints), and post-injury arthritis.
Knee Bursitis - Around our bones and tendons there are small, fluid-filled sacs known as bursae. These help with cushioning and supporting areas such as the knee joint. If a bursa sack becomes inflamed, it is known as bursitis. This inflammation around the knee may cause stiff knees and knee pain.
Gout - Gout is a type of arthritis where the consumption of certain foods and beverages causes uric acid to fill up in the joints, leading to swelling. As a result of that swelling, patients with gout often find themselves with stiff knee pain.
Knee tendonitis/tendinitis (also known as patellar tendonitis) - Tendonitis may occur from overuse of the knee, especially in athletes participating in sports that involve a lot of jumping. This may cause inflammation in the patellar tendon, which in turn causes discomfort toward the front of the knee, right below the kneecap. This pain may make it difficult for patients to bend or fully straighten the leg, a sign of knee stiffness.
Diagnosing a Stiff Knee
If you are suffering from knee stiffness, consult your physician for further assessment. He or she may ask about your recent activities and also review your medical history. Your doctor may also request a radiological exam, such as an MRI or X-ray.
What can be done for Knee Stiffness
As with most conditions, it's important to determine the cause of your stiff knee in order to receive the appropriate treatment. You should always see your physician for an appropriate diagnosis of your stiff knee problem. Here are some common ways to help relieve knee pain associated with stiffness:
In the case of recent trauma or injury to the knee joint, you may want to consider cryotherapy (cold therapy). Ice the area with ice packs. In some cases, your doctor may also recommend a cryotherapy product which will provide prolonged cold to the area. (These are often used for patients who have knee stiffness from recent knee surgery as well.)
For knee stiffness as a result of swelling, your doctor may aspirate (or drain) the area. For example, an ACL tear may cause the knee joint to fill with blood. To relieve the area of pressure, your physician may use a needle to remove some of the excess blood and fluid. This may help minimize the swelling and also reduce stiffness in the knee.
Physical therapy may also be recommended for knee stiffness. A physical therapist will work with you to increase your range of motion and to find exercises that help decrease inflammation. Exercise helps to stretch the muscles and strengthen the areas around the joint.
Nutrition and weight loss may be another recommendation in the cases where weight may play a role in the knee stiffness. In the case of gout, a change in diet may help reduce the amount of uric acid in the body.
While these are the most common treatments for stiff knee, it is not a comprehensive guide. Be sure to consult your physician for any knee stiffness problems to get the most appropriate treatment for your situation.
Best Selling Knee Braces
-
$219.99On Sale 0% Off Save $0.00(31) ReviewsStay in the game with the brace built for explosive movement and serious support. The Bionic Fullstop trains proper ACL motion and protects on every pivot and cut. Trusted by athletes who don’t know the meaning of “slow down.”
The Bionic FullStop Knee Brace can be used to treat or prevent the following knee injuries:
- ACL Injuries
- Meniscus Injuries
- Moderate Ligament Sprains of MCL, LCL, and PCL
- Patella Support
- Hyperextension Prevention
- Joint Instability
- Post Surgery Protection
-
Special Price $77.99 Regular Price $86.99On Sale 10% Off Save $9.00(67) ReviewsLock in stability, dominate every move. Polycentric hinges with hyperextension stops + anti-migration wrap-around fit means this brace locks you tight through every jump, cut, and sprint Breathable neoprene, stretch-web closures, stash pocket and reflectivity keep you agile, comfortable, and game-ready—day or night
The Bionic Knee Brace can be used to treat or prevent the following knee injuries:
- MCL and LCL Instabilities
- Knee Hyperextension
- General Meniscus Support
-
Special Price $86.99 Regular Price $95.99On Sale 9% Off Save $9.00(9) ReviewsLock into performance-grade support with bilateral polycentric hinges. Moisture-wicking Drytex material and open-patella design keep you cool, agile, and on‑point through every cut and sprint. Adjustable top/bottom straps and anti-slip silicone hem ensure this brace stays put when you're pushing limits on the field or court.
The Bionic Drytex Knee Sleeve can be used to treat or prevent the following knee injuries:
- Medial / Lateral Ligament Protection
- Hyperextension
- Range of Motion Protection
- Elbow Instability
-
Special Price $61.99 Regular Price $68.99On Sale 10% Off Save $7.00(3) ReviewsLock in elite-level support through every cut and sprint. Dual aluminum polycentric hinges and hyperextension guards control lateral and medial instability—ideal for ACL, MCL, meniscus, or sprain rehab. Breathable neoprene with moisture-wicking terry lining, wrap-around fit, and anti-slip pads keep it snug, comfortable, and game-ready from kickoff to cool-down .
The Bionic Comfort Hinged Knee Brace can be used to treat or prevent the following knee injuries:
- Meniscus Injury
- MCL and LCL Protection
- Knee Instability
- Hyperextension
- Strained Muscles or Tendons
- Sprained Ligaments
-
Special Price $69.99 Regular Price $77.99On Sale 10% Off Save $8.00Engineered for athletes who demand mobility and support. The 4-way stretch knit fabric delivers compression to manage swelling, while removable plastic hinges provide medial/lateral stability during dynamic movements. Ideal for sports like basketball, volleyball, and soccer, this lightweight sleeve offers a secure fit with adjustable straps and a patella buttress to protect the kneecap.
The Hinged Knit Knee can be used to treat or prevent the following knee injuries:
- Overuse Injuries
- Patella Tracking Disorder
- Muscle Imbalance
- Strained Muscle or Tendons
- Mild Sprains
- Blunt Trauma
-
Special Price $29.99 Regular Price $33.99On Sale 12% Off Save $4.00(2) ReviewsLock In. Level Up. Dual-pull straps and removable buttresses deliver customizable patellar tracking and lateral stability. 4-way stretch knit and low-profile design keep you agile—ideal for runners, jumpers, and game-day warriors.
The Deluxe Knit Knee With Stays can be used to treat or prevent the following knee injuries:
- Mild knee sprains and strains
- Inflammation
- Arthritis
- Bursitis
- Overuse Injury
- Patellofemoral Syndrome
-
Special Price $48.99 Regular Price $53.99On Sale 9% Off Save $5.00(2) ReviewsStabilize Your Stride Dual-pull straps and removable buttresses deliver customizable patellar support for peak performance. Lightweight 4-way stretch knit ensures comfort and flexibility during every workout.
The Dual-Pull Patella Stabilizer Knee Sleeve can be used to treat or prevent the following knee injuries:
- Runner's Knee
- Patellofemoral Syndrome (PFPS)
- Patella Maltracking
-
Special Price $43.99 Regular Price $43.99On Sale 0% Off Save $0.00(51) ReviewsEngineered for athletes who demand support without compromise. The TriZone Knee Support combines compression and bracing in a single sleeve, featuring three strategically placed zones for enhanced stability and comfort. Crafted with carbonized bamboo for natural odor control and breathability, it's ideal for sports like basketball, running, and volleyball.
The Trizone Knee Support Brace can be used to treat or prevent the following knee injuries:
- Tendonitis
- Meniscus Injury
- Muscle Strain
- Over Use Injury
- Mild Joint Instability
- Need for Compression