If you’re an athlete, chances are you’re working and training year-round, which means you are more likely to get injuries.
Your ACL, or Anterior Cruciate Ligament (ACL) connects your thigh to your shin and is one of the main ligaments that helps stabilize your knee joint.
ACL injuries are common among athletes because you are more likely to tear or injure your ACL when stopping suddenly and changing direction. In fact, ACL tears affect more than 200,000 people a year.
Let’s learn more about ACL injuries.
ACL Injuries
ACL injuries, or ACL tears, are common knee injuries in sports. ACL injuries are typically the result of three things:
- Stopping and changing directions quickly
- Direct contact to the knee from opponents on the court or field
- Landing from a jump onto a bent knee then twisting and/or landing on the knee that is over-extended
ACL Tear Symptoms
If you’ve ever had a torn ACL, you’ll quickly recognize the symptoms. First, you might feel a “snapping” deep within your knee, as well as a great amount of pain.
- Severe pain and swelling
- Loss of motion
- Unstable knee and unable to hold any weight
Other structures in your knee (meniscus or medial ligament) can also be torn or injured in addition to your ACL.
ACL Sprain vs. ACL Tear: Do You Need the Same Brace?
Not all ACL injuries are the same, and the type you have directly affects which brace is appropriate.
ACL injuries are graded by severity:
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Grade 1 (Sprain): The ligament is stretched but structurally intact.
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Grade 2 (Partial Tear): Partial tearing with some instability.
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Grade 3 (Complete Tear): Full rupture. The ligament can no longer stabilize the knee on its own.
For Grade 1 and Grade 2 injuries, a hinged functional brace or a reinforced compression brace often provides enough support while the ligament heals. The ligament retains some function, so external support can compensate for the deficit.
A Grade 3 tear is a different situation. After surgery, you will typically be placed in a rigid ROM brace that limits movement to a controlled range. Once you progress to rehab and sport return, a functional ACL brace takes over for continued stability during activity.
If you are unsure of your injury grade, see an orthopedic specialist before choosing a brace. The wrong level of support for a complete tear can delay healing or increase reinjury risk.
ACL Injury Treatment
ACL injuries are often repaired with surgery. After surgery, knee braces are used in order to relieve discomfort and provide support. The best knee braces for ACL injuries have compression to support the knee without interfering with mobility, which also increases blood flow and reduces pain.
Consult a doctor before seeking treatment for your injuries.
ACL Injury Recovery
Recovery for ACL injuries varies depending on the severity of the injury or tear. It can take anywhere from two to six months. If you are an athlete and are returning to practice or training, it could even take up to 9 months or more to get back to your pre-injury condition.
Most, if not all people recovering from ACL injuries wear a knee brace, especially if they are in a high-intensity sport.
When to Stop Wearing Your ACL Brace
There is no single answer. Timing depends on your injury grade, whether you had surgery, and your activity level.
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Post-surgery (first phase): Most surgeons prescribe a rigid rehabilitative brace for 6 to 12 weeks after ACL reconstruction. This protects the graft during its most vulnerable healing period.
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Return to sport: Athletes are generally advised to continue with a functional brace for 9 to 12 months after returning to play, as the reconstructed ligament is still maturing even when it feels stable.
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Non-surgical recovery: For Grade 1 or Grade 2 sprains, many people can phase out their brace within 4 to 8 weeks as strength returns through targeted physical therapy.
The most common mistake is stopping too early based on pain levels. A knee can feel fine long before the ligament has regained structural integrity. Your surgeon or physiotherapist should clear you before you stop using a brace for high-impact activities.
Types of ACL Knee Braces
Just like ice cream flavors, there are so many different types of knee braces to choose from.
- Prophylactic braces protect the knees from injuries during contact sports.
- Functional braces support already injured knees.
- Rehabilitative braces limit knee movement after an injury.
- Unloader/off-loader braces provide relief to arthritis patients with knee pain.
Key Features of Knee Braces for ACL Injuries
- Hinges. Does it have hinges or is it a sleeve? Hinged knee braces work best for preventing ACL and other knee injuries.
- Adjustability. Is it adjustable? An adjustable brace will allow you to achieve the comfort and support you need while you are recovering.
- Support.Does it offer firm support? Your knee brace should be firm enough to keep your knee well stabilized, but not so much that it completely limits mobility.
Pro Tip: Getting a brace that is specific to protecting your ACL reduces your risk of tearing.
ACL Braces for Sports & Active Lifestyles
Athletes returning to sports after ACL injury need specialized braces designed for high-impact activities. Sports ACL braces feature lightweight, breathable materials with reinforced hinges that withstand cutting, jumping, and pivoting movements common in basketball, soccer, and skiing.
For runners, look for low-profile ACL braces with open patella designs that won't restrict your stride while providing lateral stability. Running-specific models use moisture-wicking fabrics to prevent chafing during long distances.
Waterproof ACL braces are essential for swimmers and water sports enthusiasts. Neoprene and synthetic materials maintain support when wet and dry quickly. These braces use corrosion-resistant hinges and non-slip straps that stay secure during aquatic activities.
Best Knee Brace for Torn ACL and Meniscus
A combined ACL and meniscus injury places two simultaneous demands on a knee brace: rotational control for the torn ligament and cushioned compression to reduce pressure on damaged cartilage. Rigid hinged braces with dual polycentric hinges are the most common recommendation because they address both needs — limiting dangerous forward tibial translation while the stabilizing frame takes load off the medial or lateral meniscus.
For athletes with this dual injury, a brace with adjustable ROM hinges allows controlled range of motion during early rehabilitation, then unlocks progressively as healing advances. Look for models with a popliteal relief cutout to reduce pressure behind the knee during flexion, a key comfort feature when meniscus swelling is present. Consult your orthopaedic surgeon or physiotherapist before selecting a brace for combined ACL and meniscus injuries, as severity of the meniscal tear affects the level of support required.
Best Knee Braces for ACL Injuries
We have a full collection of knee braces for ACL injuries that are durable, lightweight, and specifically designed to keep you in the game.
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FAQ
Can knee braces prevent ACL tears?
Knee braces can reduce ACL injury risk by 30-50% in high-risk sports, particularly for athletes with previous ACL injuries. Prophylactic braces work best when combined with neuromuscular training and proper technique.
What's the difference between a knee sleeve and ACL brace?
Knee sleeves provide compression and warmth but minimal structural support. Rigid ACL knee braces feature hinges and rigid supports that prevent dangerous knee movements and protect the ligament during recovery or sports.
How long should I wear an ACL knee brace?
Post-surgery, wear your ACL brace for 6-12 weeks as directed by your surgeon. For sports return, continue using a functional brace for 9-12 months. Athletes with chronic instability may need long-term bracing during high-risk activities.
What is the best knee brace for ACL recovery after surgery?
A rigid hinged ROM brace for the first 6 to 12 weeks post-surgery, transitioning to a lighter functional ACL brace once you return to activity. Your surgeon will guide timing and brace type at each phase.
Can I wear a knee brace instead of having ACL surgery?
Not for a complete tear, especially if you play sport. A brace supports the knee externally but cannot restore a ruptured ligament. Some partial tears are managed non-surgically with bracing and strengthening, but this depends on your injury grade and activity level. See an orthopedic specialist.
What knee brace is best for basketball or football with an ACL injury?
A rigid functional brace with reinforced polycentric hinges designed for cutting and lateral movement. Low-profile designs work best under compression gear. If you are post-surgery, get return-to-sport clearance from your surgeon before playing in any brace.
