Hinged Knee Brace: Shock Doctor Maximum Support Compression Knee Brace - for ACL/PCL Injuries, Patella Support, Sprains, Hypertension and More for Men and Women


  • PREVENTS AND PROTECTS - Helps prevent and heal medial and lateral instability, minor patella instability, meniscus injuries, minor ligament sprains, hypertension, arthritis, and more
  • MOISTURE AND ODOR PREVENTION - Antimicrobial and airflow vented tech to reduce odor, bacteria, and moisture, so you can stay comfortable through the toughest days and workouts
  • BOOST MOVEMENT AND COMFORT - Heavy duty bilateral dual hinges provide support while allowing you to move comfortably with four-way stretch Lycra mesh and pre-curved anatomical design, fits left and right knee
  • PREMIUM MATERIALS - Latex-free, premium stitching, and integrated flexible side stabilizers, stays in place and includes easy grip tabs for accurate fitting
  • LIFTS AND COMPRESSES - Compression supports soft tissue, joint alignment and relief, and boosts therapeutic heat for improved blood flow which aids in healing tendon and muscle
  • This product is intended to be close-fitting for the best protection so it may fit small. If your measurements are close to the maximum size range, we recommend sizing up for comfort. Sizing will vary.
  • Note: Kindly refer “how to measure” video included before purchase
  • Kindly refer the sizing image before buying this product


Shock Doctor

Product Code:



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Shock Doctor, a leader in sports protection. Hardcore protection, fearless performance. Bilateral support hinges for stability and increased performance.

Product details
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • ASIN: B0875TKRV1
  • Item model number: 875

I had dislocated my knee 2 days before I received this brace. I was in such pain I couldn't move. I was literally screaming in pain. My wife was ready to call the EMS. After about an hour, I finally got it to pop back into place. The first thing I did was get on Amazon and find this brace. Do not want to go through that pain again. I had my rotator cuff torn in 2 places in a motorcycle accident and the pain didn't compare to dislocating a knee. Please do as it suggests and actually measure your knee 2" below the kneecap. It has a sizing chart and it suggest getting 1 size larger. Personally, I didn't see the logic in this, but my wife convinced me to follow instructions and buy the XXL. I am so glad I did, it fits very snugly but not so much that it cuts off circulation. It keep the lateral movement of my knee almost to nothing. I do find I have to take it off at night when I sleep just to let it breathe. I would recommend this to anyone with any kind of knee problems. It gives it the support it needs and keeps you from being in agonizing pain. If I could give this a 10 star rating, I would.
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I totally blew my knee out during Krav Maga class by landing off-balance on my left leg. I never had a knee injury before so it was a new experience. I couldn't even put any weight on it without it feeling like my leg was going to separate at the knee. We went to the local Walgreens and got a basic pair of crutches and the best knee brace they had on the shelf, which is the Mueller Hinged Wraparound Knee Brace, Black, Lg. I wore that one for about 5 days before it started to feel like it wasn't giving me much support, no matter how much I tightened it. I was getting into my car and moved my leg just right (or just wrong) and tweaked my knee again, even with the brace on.

Knowing that my knee is worth the expense to keep from re-injuring it, I ordered this Shock Doctor knee brace and was thankful that Amazon has Sale Day delivery in my area.

Be sure to order the right size! ** Ignore the note about it running small! You want to err on the side of it being small because it does stretch and break in! **

In case you need it, here are the sizes:
S = 12.25" - 13.25"
M = 13" - 14"
L = 13.75" - 14.75"
XL = 14.5" - 15.5"
XXL = 15.25" - 16.25"

My upper calf is 15" in diameter 2" below the kneecap as instructed to measure, so I ordered a Large. Yes, it was a tad small, but it worked out for me.

++++ HOW TO PUT IT ON ++++
To install it, slide it over your leg like you would anything else. It will feel VERY tight in the calf area. Grab the sides of the top opening where the little grippers are and pull it on until it is in place, then wrap the straps around accordingly. YOU WANT IT TO BE TIGHT IN THE CALF THE FIRST TIME YOU WEAR IT!

It will seem like it is way too small the first day. Also, the straps that wrap around the back of your knee feel like they are digging in the back of your leg. Adjust them once in a while or put a think piece of cloth on the back of your knee for a while. After a while, they break in as well.

Day 1 - will feel very tight.
Day 2 - will still feel very snug, but more comfortable.
Day 3 - you can wear this all day and not even think about it.

It definitely needs time to break in and stretch to fit your leg, but once it does, it is awesome.

So let's talk about the most important part...THE SUPPORT...

The first time I put it on and tightened the straps down, I felt like I could do jumping jacks on a sprained knee. Of course, I knew better...but it feels VERY solid and VERY secure. It drastically helped me get back to walking around and building strength in my knee again. I suppose the only downside, other than the break-in period, is the confidence it gives you that if you are not careful, you can start acting "normal", overdo it and hurt your leg again. Remember, it is just a support and not something built by Tony Stark. Also, you cannot bend your leg fully as the straps in the back get in the way, but if you are wearing this, you probably shouldn't be bending your leg that far anyway.

Of course, everyone's injuries and body structure is different so your results may vary, but this was without a doubt the best I could buy for my injury and to avoid injuring it again.

So this is my second order of what I believed to be a perfect brace, and I got ripped off on the new model. They have added extra stitching around the hinges, but the reduced the amount of velcro on the top and bottom straps so you cannot get the same fit you had before, so if you wanted a tighter fit as I needed in my case, the brace doesn't stay secure and slides down my leg. So now I just lost time and money, because I can't return it. There should have been a notice that the model was changed this significantly that it affects the overall wear. Another cost saving measure gone wrong. Really disappointed.

Very impressed with the increased stability. I injured my knee playing indoor soccer (a couple times) and did not get it checked out by a doctor. Since the first injury my knee has been "wobbly" side-to-side, and I was fearful of putting full weight on it when slowing or pivoting. After wearing this brace twice in-game, I feel much more confident in making cuts and placing weight at various angles that I could not achieve without the added support. I would certainly not recommend others use this brace as an alternative to seeing a medical professional as I have, but it does do a great job of giving back confidence for someone who is working on rebuilding strength in an injured knee.

There are so many positive things about this brace that make it great. The fabric is very strong and is stitched well. The X straps hold everything in place better than any other brace I've used in the past (outside of the $1500 one insurance paid for after a full ACL reconstruction), and it does not slide down my leg after time like most braces tend to do. I very much like that the hinges lock at 180 degrees to prevent hyper-extension. And finally, the Velcro on the straps are legit and does not let go until giving a firm pull.

The one word of caution I would offer, as many others have also commented, is to buy the size larger than you think you need. This beast is meant to hug your knee tight, and can be a bit of an effort to get it on and off. That said, the tiny struggle for putting on and taking off is absolutely worth the added support and confidence while wearing it. Pro tip: I use the ends of hinges to pull up and push down to help move it into place. To again echo others, this brace is not meant to be worn for several hours at a time. It's not uncomfortable, but I definitely don't forget that I'm wearing it, and it is a relief once it's off again.

There aren't any negatives about the brace that would make me think twice about buying another one of these if necessary or recommending to someone else in my situation. Bang for the buck, this brace is the real deal.

I have grade 2 injuries (serious) to the ACL and PCL on my left knee. I'm waiting for reconstructive surgery. The hospital supplied a Medi M.4s PCL Dynamic Brace (costing hundreds of pounds) which does a fantastic job of ensuring the tibia doesn't move backwards due to the torn PCL. A top product!

Although the Medi brace is lightweight and relatively comfortable, it's still hard to wear 24/7. Also, after a while it affects the soft tissues where pressure is applied.

I tried a simple, wrap-around neoprene knee support costing £15. As you'd expect it provided almost no forward support for the tibia. A waste of money for my needs.

This Shock Doctor Ultra Knee Support (silly name) is pretty good. Obviously nowhere as effective as the Medi brace, but gives support and confidence for moderate walking. I'm too scared of making the damage worse to try anything more ambitious. Definitely better than nothing and can be worn under jeans all day.

I needed to restart some kind of cardio exercises after several months away. I can't run right now, and don't enjoy cycling. So I've been wearing this in the pool (front crawl with no leg use). It works fine.

It's well thought out and well made. Some reviewers said to go up a size. I measured 2" below the patella as 37cm and got the Large (35-37.5cm). It's very snug and I only just get it on and off, but I wouldn't want to go up a size.

It’s so good I’ve brought a second one! Why? I’ve had the the first brace for 4years, brought awaiting surgery after tearing my left meniscus,(tried 2 different makes prior to shock doc), to keep working (I’m a plumber, so on & off my knees all day), it’s been absolutely superb, comfortable to wear all day, excellent support. After op, wore on return to work during rehab, also for sports, after op. I continued to wear for ‘heavy duty’ sports since op, skiing 6 times (brought a specialty ski knee support, very expensive, was really uncomfortable compared to shock doc so reverted to shock doc after 1st day), bike park Wales 3 times & over 20 Airsoft games- I mention this to give a good idea how good this support has been! It’s a little frayed now but still comfy. However I’ve now torn my right meniscus & the old brace has ‘shaped’ itself to my left knee.
So brought a new one for my right knee & guess what: it’s just as good!
Don’t look any further than this support, it’s superb!

I have been using these supports (2 of them - one on each knee) at least once a week for about 5 weeks only - yet one of them has come apart along a seam already! Having paid this much for them (£65 each) I'm really not impressed at all at the durability. While I was using them the support is good, but flexibility and comfort aren't great - I assumed this was a trade-off against the higher support level than other knee braces I've used. I will be reaching out to either Amazon or the manufacturer for a refund or replacement as I really think they should have lasted longer for the price I paid.

This product has been amazing for the numerous times that I have used it. I have had reconstructive ACL (hamstring tendon repair) and was recommended this by my surgeon. Although more expensive than many on the market, it is worth it! Within weeks I was using it to do simple walks and found that the increased support made me much more confident on my feet. I will do another review once I am able to run!

The only thing I would say is that initially I ordered a M, but had to replace with a L. My knee circumference is in the M bracket, but my quads are a too big for that size (former competitive rugby player and cyclist) so bear that in mind. I managed to change to the bigger size no problem.

It's comfortable, even after hours of use, and simple to wash.

I bought two of these for my gammy knees, although I only need to use one regularly when cycling. I've been carrying a partially torn ACL for a few years which, although not bad enough to operate on, still gives me grief. After having experienced lots of post-cycling pain, and a neoprene knee sleeve that was only partially effective, I thought I'd give these a crack. Well, all I can say is that in the space of a week, I feel like I'm in my early 20s again! The compression & support are absolutely wonderful, and the hinge completely prevents hyperextension. The support fits like a glove and doesn't come loose (make sure you get the straps nice and tight - doesn't affect comfort - just prevents slippage). The support is very mobile and doesn't restrict movement in any way - it feels like some kind of orthotic device that should cost a lot more than it does. I only wish I'd had one of these for the past ten or so years.

I received the shock doctor knee brace in perfect condition - in packaging and promptly. 10/10.

I had a knee operation in April 2018. I had a meniscus tear that ruptured some fluid sack between my knee bones on the outer side (for months i thought it was related to my IT band) and needed an operation. My surgeon performed key hole surgery and removed 20% of damaged cartilage. He told me I'd be on my feet running 10km runs in 6 weeks. I booked more work (I was working in the private security field) and got there limping at best. For all intents and purposes I could walk just fine, but any impact felt like a sharp sensitive pain - and immobilized me for a day or two with extreme swelling. 4/10 to my surgeon.

I took a gamble buying this and just finished my 2nd week running - zero swelling, zero pain. I think anyone who has had similar problems should really buy this. 10/10

I am middle aged female, petite. I have torn meniscus. I bought this brace after reading about many different braces. It's the best money I ever spent and well worth paying extra for a decent brace. I got the medium but it was too big so I got the small. A few weeks in and it feels like part of my leg. I am 100% supported. I don't do sports. I am delighted just to be able to walk around and do stuff. I am able to go out and have flown with it on. While I decide my next steps I am so glad I found this. Very sturdy but comfortable and a couple of weeks in has moulded to my leg shape. I hardly notice it. This is a 10/10 for me.

I really took my time researching the right product for my knee injury, I opted solely on this product based on the sheer positive reviews. The price was a bit more than I wanted to pay but I decided to gamble on the investment.
Absolutely no regrets for me, this support has become a must-have for work, home & play..until my slot for surgery comes up..this is now the next bit of kit that goes on straight after the undies in the morning...no if's or but's.

Will seem tight as a sleeve opposed to a wrap around but I tried the bigger size which was also tight even tho the hinges were far too big and once I'd broken it in it was fine, stick to the guide chart!

As for the quality of the product, not only was it extremely well made but it did it's job better than I could've ever imagined.
I did some minor ligament damage about 4 years ago and have since caused cartilage damage from multiple further injuries resulting from the 1st, some skiing, some drunken dancing, some simply running, the knee just crumbles underneath me. It doesn't hurt but I won't be able to get up for a few minutes or walk properly for a couple of days. Every time the knee gets weaker causing injuries to occur easier and more often but more to the point I could no longer ski for more than a few hours at a time before it was too weak and the other leg was burning from doing all the work.

From the moment I put this support on I felt indestructible again and even had a little go in the park for the 1st time in a couple of years!
I actually used the phrase "It's like having a new knee" to my friend.

Bought this along with another brace after a recent meniscus tear. Wore this mainly in the first 48 hours to protect the knee and avoid any further injury and it was brilliant. Just as good as the fibre glass braces from the hospital. Absolutely no movement in the knee joint and the slight compression helped to reduce the swelling.

I bought another, slightly smaller brace because I wanted to be able to get back out running as soon as possible. And I'm glad I did because I don't think you could run comfortably in this for any sort of distance. It is definitely for rehab and recovery rather than activity but does the job brilliantly.

I've had a ACL reconstruction in 2008 and in January I had a large tear in my cartilage -both injuries down to football.

There was some initial confusion with the size guide , I'm not a particularly large person (6'1 13 stone) but was measuring 15" circumference below my knee, so I was in-between the sizes for xlarge, looking at the recommendations from other people saying to go a size above what size category you fall in I decided to go with the xxl knee brace and it fits comfortably.

I've been for a run today wearing the brace, there is some discomfort initially, the knee felt heavier and there was some rubbing behind my knee and where my other leg was brushing against the support, but you'll adapt to these soon enough. (my knee discomfort could also be down to this being the first run since I injured my knee in Jan).

I will say besides the initial discomfort, I felt 100% confident in this knee brace and if it gives people that confidence to get back to what they enjoying doing then I'd definitely recommend.

I also fell over on this run as I was paying to much attention to song choice rather than where I was going and I had no issues from my knee, it done its job with protecting the knee.

I would recommend, can't really put a price on protecting your knees.

Tore my median and anterior cruciate ligaments in a freak skiing accident last year. At the time and during my rehabilitation I feared that might be the end of skiing for me as the damaged knee feels significantly different to the other one. The main problem is that the structure of the knee feels “loose” despite a significant amount of physio and muscle training. Decided to give the Shock Doctor Ultra a try after reading positive reviews and crikey did it deliver. Just got back from a week in the Italian Alps and went skiing every day - the brace is comfortable, breathable, well designed so it can easily be worn under salopettes, and most importantly it gives incredible support which seems to stabilise the whole joint. Not a twinge even after a full day on the slopes. The hinges and cross brace straps really give you confidence that the original injury is being protected. Take care with sizing when ordering as my measurements put me right in the middle of the medium bracket but the brace is a really snug fit. Might be an idea to go up a size as you will still be able to adjust using the straps. I have also started wearing the brace whilst playing tennis and again it just gives you more confidence that the knee will not give way. Overall a great product that works brilliantly.

I’ve had bad knees for over 20 years through playing rugby league.
During this time u bought several different makes which helped and kept me playing
I had a total knee replacement 12 months ago. Which went well. I’ve started doing more and more training but not overdoing it I damaged my Interior medial ligament started wearing my old braces again which helped but felt uncomfortable
I searched online all reviews available on knee braces this came out among the best at 9/10 for overall protection
I ordered 2 put them on as soon as they arrived. Taking my others off
Wow what a difference more support more comfortable less pain
Would recommend these to whoever will listen

Fantastic knee brace. I brought this when my knee was giving me some trouble on runs over 5k. It really seemed to do the job. Its fit is good. Takes a minute or 2 to get on and do up but once on does give a good amount of support to the knee.
It is comfortable when on. I started off easy only wearing it for an hour during normal walking around. Slowly building the time up before using it for a run.
During running it is comfortable and after the first 5 minutes I forgot I had it on. My knee felt supported without impacting my running technique. Has really helped and now I dont really use it but that is because I dont have the trouble that I used to. I will always keep it around though as if I get any more knee trouble I will get it straight back on.

After trying material compression supports with no success I didn't hold up much hope with this one.
Ive never been so pleased to be wrong.
After a knee injury in Oct I've struggled to run longer than 10 mins before the pain got to much. An MRI later and no permanent damage found Ive been at a loss as to what else to try. This support is a godsend and I'm able to run with just the odd twinge and no pain afterwards.
This is my new best friend and well worth the extra cost :)