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Aircast Air-Stirrup Ankle Brace

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Aircast Air-Stirrup Ankle Brace

The "standard of care" for the functional management of ankle injuries

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Acknowledged by the medical community for its superior performance in helping to heal ankle injuries.

The Aircast Air-Stirrup ankle brace is commonly worn immediately after injuring your ankle and throughout recovery because it helps accelerate rehabilitation. Since 1978, the Aircast Air-Stirrup Ankle Brace has been the brace the medical community has turned to for the functional management of ankle injuries. Functional management means wearing the brace enables you to continue your daily activities while recovering from your injury. The Aircast Air-Stirrup has been cited in over 100 medical journals for its superior performance in helping to heal ankle injuries.

It is the patented Duplex™ air cell system that makes the Air-Stirrup so successful at treating severe ankle injuries like third degree ankle sprains. This exclusive system incorporates two pre-inflated overlapping air cells (distal and proximal), that provide support and produce graduated compression when walking around. The compression helps reduce edema, the swelling that is caused by fluid trapped in your body's tissues, as well helping to accelerate rehabilitation.

The Air-Stirrup Ankle Brace is used to treat or prevent the following injuries:

  • Acute injuries of the ankle
  • Third Degree Ankle Sprains
  • Severe Chronic Instability

Product Features…and the benefits you’ll experience!

  • Semi-Rigid Shells
    Provides support and protection from inversion and eversion.
  • Anatomically Design
    Ensures you’ll get a comfortable fit.
  • Pre-Inflated Aircells
    The brace is ready to wear…all you have to do is strap it on.
  • Streamlined Fit
    Easy to fit in your shoe when it comes time for early protected weight-bearing movement.

Sizing and Measurements

Click on the Size Chart tab above to learn how to measure your ankle to determine what brace size you need.

Description Brace Length
Pediatric (XS) Ankle Brace 6.0" (15 cm)
Small Ankle Brace 8.7" (22 cm)
Training (Medium) Ankle Brace 9.0" (23 cm)
Standard (Large) Ankle Brace 10.5" (27 cm)
4.75 12

Aircast Air-Stirrup Ankle Brace reviews

I sprained my ankle during a tennis game and my doctor recommended this airstirrup. There is something about the aircells in this brace that made my ankle feel loads better when I was moving around. Wearing this brace and a whole lot of ice really helped me feel better. - Susan
My doctor suggested I use this when I sprained my ankle three weeks ago. It's very comfortable and allowed me to just use one crutch instead of two. - Tamara
I was a high school trainer years back and used these ankle supports exclusively to keep our boys SAFELY playing basketball. Great the time I lived near where these were originally mfg. I wholly endorse and back this product over any others. - Paul
This is a very useful brace and if it were made in black you could wear all the time, it is white, and it is awkward to have to wear something that is noticeable by everyone. - RJ
I like it a lot....I have one question, usually I use it with tennis shoe and sock - if I need to go to a wedding, can it be used in a heeled shoe? - Lindalee
I fractured my ankle 4 months ago. I broke 3 bones with a dislocation. I really had to be put back together. After 3 surgeries, a non weight bearing cast for 6 weeks, an Aircast boot for 6 weeks and gradual weight bearing, I am now wearing the Aircast splint. I find it hard to get into my New Balance shoes, which I now have to wear every day, I would doubt that you could wear it in a shoe with heels. I am looking forward to the day when the splint can go into the closet. However now it certainly helps with the stability of my ankle. I would recommend it for anyone who needs ankle stability for any reason. It is easy to put on, and if it rubs your ankle bone, it can be adjusted. - Barb
I like this a lot it's very comfortable. I fractured my ankle mildly when my horse fell on me and my whole leg is bruised but this doesn't make the bruising worse and it makes the ankle feel great. I do have a wedding and have no idea how to cover my foot because I can't walk but it's winter so I'm not going barefoot. Someone please help I don't know what to do. Anyways, this is really great. - Emma
I had a bad fall and my doctor recommended this product and after only seven days,I had grate results and was able to walk on my foot.This is a good product once it is used correctly. - laurs
Unfortunately I've suffered repeated ankle sprains since an ankle fracture in high school basketball. Years ago I was given this brace in the ER following a severe ankle sprain. I keep this brace in my first aid bag and following ice and ace bandaging, this is my go-to support. It is the best of all the many braces I have tried. It is very durable. I still have my original one (over 20 years old I think). I now keep one for 'dress' (so I have a nice clean one) and a couple for day-to-day and ranch chores and riding. I would never try wearing heels following an ankle injury. I have had to attend a wedding wearing this brace and have worn it with sandals, flats or low heeled dress boots depending on the weather. Excellent brace! - Kathe
I have temperamental ankles... Apparently I managed to fracture them at points in high school without even knowing it (I sure do now as an adult!). I hung onto the aircast I was given by an ER doc a few years back, and I'm really glad I did. These work!! I'm on my feet constantly at work, and this has been my saving grace after a recent sprain. These can be hard to get in a shoe, but they do what needs done. I did recently develop a blister on my inner ankle however. So I would suggest ensuring your socks are high enough. I always wear short socks (below my sneaker line) and they are not the best for this. As for wearing this with heels... If you need an air cast it's not the right time for heels of any sort. I love heels, but keeping your ankle strong and letting it heal is more important than fashion- wear flats, just for a bit til you're stronger. Depending on your ankle, you might have to give up heels altogether, but caring for it properly in the meantime will at least make that less likely. - Klutz
It is absolutely amaing how comfortable this brace is. I noticed the differecne from an ace bandage to the Aircast on the ride home. I couldn't feel every bump anymore. It is comfortable in every way possible. Absolutely awesome. - clumsyLO
I have sprained my ankles multiples times, apparently from weakness and un-diagnosed breaks or fractures in high school. These braces make all the difference in the world, especially when walking and driving. After my most recent sprain, I immediately got it out and put it on, and could tell the difference within hours. It doesn't fit well in shoes, but it's still getting an A in my grade book! - CallmeGrace

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Questions on Aircast Air-Stirrup Ankle Brace

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  • From Rick Gleitman at 10/7/2011 9:51 PM
    • 1) If my shoe size is a Mens 10 1/2", which size Aircast Air-Stirrup Ankle Brace would I order?
      2) Does Aircast still make the "Aircast Sport Stirrup Lateral Side?
      Please let me know the answers to the above two questions and which model I should order.

      Thank you,

    • Depending upon the injury and if you are wanting to be functional with the brace on, will vary for each brace. For post injury the Air-Stirrup brace, being a Men's size 10 1/2" the Medium will be a good size.
      For functional you may look at the A60 (will closest equivelant to the stirrup lateral side)
      Please let us know if you have more questions.
  • From Ashlen at 12/13/2011 2:13 PM
    • If I already had a cast on and am just getting my cast off after having a broken fibula (No surgery was needed) and am looking for something to help me get back to walking okay, and that I can use whenever I feel the need to while running, excercising, etc. is the Air-Stirrup Ankle Brace the best option or would the Air-Sport Stirrup Ankle Brace be a better option (i'm liking how it states it is narrow for daily shoe fitting.)
    • The Airsport is a better choice to wear during activity and exercising, it provides more joint stability and fits in a shoe better.
  • From Katie at 1/8/2012 2:51 PM
    • I have a VERY old aircast ankle brace which I shortened by cutting the top 1-2" so that it is 8" from bottom to top of brace. But I'd like to update it. My foot size is women's 11. Would the Small still work for me (since I'd prefer the shortest possible height).
    • Hi Katie,

      Yes, the small would work for you. It is just over 8 inches tall.

      If you have additional questions, please call 1-800-553-6019

      Have a nice day.
  • From John at 5/23/2012 12:00 PM
    • I wear a size 9 mens. I have a problem with my ankle rolling when hiking. This has resulted in a ankle injury. What size of aircast stirrup would you suggest for me. (my legs are slim)
    • If you are planning on hiking or being active, I would recommend the donjoy Velocity ankle brace. The Aircast Air-Stirrup is for post injury for everyday activities, inwhich case you could go with a medium.
  • From winnie at 5/31/2012 10:34 AM
    • a women's size 9 would be an air cast small or medium?
    • Medium
  • From Peggi at 6/5/2012 7:01 AM
    • I wear a ladies 8-1/2 shoe. What size brace would be appropriate for me?

    • The Aircast air stirrup is based on the height of the brace, which is shown on the page. The shoe size doesn't matter.
  • From Doreen at 6/20/2012 4:35 AM
    • Can you swim with the aircast?
    • Yes you can swinm in this, just rinse it with tap water after.
  • From Kathy at 8/2/2012 11:14 AM
    • After being in a hard cast for 4 weeks, ( fractured fibula) I was given this air cast air stirrup ankle brace. So my question is, Can I wear the brace while in a pool? Or will it damage? Thank you
    • You should rinse it in tap water afterwards and allow it to air dry.
  • From susan at 8/11/2012 6:13 PM
    • I received an aircast stirrup ankle brace while in the emergency room, but did not receive any instructions. Should I wear the brace while sleeping or in the shower? Or does my ankle need a rest from it a few hours a day?
    • You should wear it whenever your physicians has told you to wear it. I am not sure of your condition so I cannot comment on that. You can get the Air Stirrup wet, you should rinse it and allow it to air dry.
  • From Marshall Jagger at 12/15/2012 2:18 PM
    • where can I get parts ?
    • Hello,Mr. Jagger -

      You can purchase replacement parts by contacting our customer care 800-336-6569.

      Thank you and have a great day!
  • From Zakaria at 2/7/2013 5:55 AM
    • Hello,

      i have an ankle that is very weak, ie, it rolls over VERY quickly and it hurts .. I need a good ankle brace that blocks inversion movement almost completely yet still allows me to play soccer with it on a regular basis..

      Also, what are shipping costs to Belgium?

      Thank you very much

    • Hi Zakaria,
      A good option for your ankle to give it plenty of support while still getting out and playing soccer would be the Aircast Airsport Ankle Brace. Unfortunetly, at this time, BetterBraces does not ship outside the U.S.
      Here is the link from BetterBraces to get a visual of this brace.
  • From William Roy at 5/11/2013 10:21 AM
    • The strap (under the foot connecting the two side slats) on my air-stirrup ankle brace tore after just a few months use. All other pieces are still in good. Is there any way to get just a replacement strap?
    • Hello, William -

      Please give our customer service representatives a call at 800-336-6569 and they can assist you in getting that strap replaced. Depending on how long you've had the product, it still may be under the warranty so the straps can be replaced if that's the case.

      Thank you and have a wonderful day!
  • From kiki at 5/28/2013 12:33 PM
    • Should I wear this while I am icing my sprained ankle, or should I remove it?
    • Hello Kiki,

      Please contact your Physician regarding any restrictions they may have placed for you. Typically when you apply cold therapy to an ankle sprain you do so without any bracing, place a thin barrier between your skin and the ice. Again, contact your Physician with further questions.

      Have a Great Day.
  • From Stephanie at 5/30/2013 6:12 PM
    • When adding or removing air to the chambers, the "goop" that is in the valves gets pushed down into the air cell - do I need to worry about the cell not holding air once this happens? (had to release some air during high altitude travel and had to add air once back at sea level)

    • Hello Stephanie,

      How long have you had the Brace? You have a 6 month warranty. You shouldn't have a problem with adjusting the amount of air in the air cell. If it's past your warranty, we do have replacement aircells you may purchase.

      Have a Great Day.
  • From Traecey Anthony at 5/31/2013 10:07 AM
    • Our doctor has recommended the Aircast Air Stirrup Ankle Brace for my 10-year old to wear while recovering from a sprained/strained tendon in her left ankle. She is 4'11" tall. What size do you recommend? Thank you.
    • Hello,

      Sizing is determined by the length needed for the brace. I believe a small will work, the width of the brace is adjustable, you can change that at any time. The length of a Small will be 8.7 inch's.

      Description Brace Length
      Pediatric (XS) Ankle Brace 6.0" (15 cm)
      Small Ankle Brace 8.7" (22 cm)
      Training (Medium) Ankle Brace 9.0" (23 cm)
      Standard (Large) Ankle Brace 10.5" (27 cm)

      Please call us with any additional questions. 1-888-405-3251.
  • From Dan at 6/5/2013 4:52 AM
    • I already have an air cast but it is marked left & I just rolled my right ankle. Can I just flip it around & use on my right ankle?
      Thank You
    • Hello Dan,

      I believe you could try and do that, if for some reason you feel like its not comfortable, you could purchase online. Below find the link.

      Have a Great Day.
  • From Melodie at 6/29/2013 8:07 PM
    • After wearing the aircast for a day, the air seems to have pressed out. I've read the warnings about how too much air will make the cast cease to support the ankle. How much air is too much?

      How often is appropriate to refill it with air?

      And is blowing in the "straw" sufficient to fill it?

      Thank you.
    • Hello Melodie,

      After re-inflating the air cell be sure to fold over the tip of the air cell and secure it. You shouldn't need to refill air cell, too much air will not allow the air cell to mold around your ankle. The brace should be comfortable around your ankle.

      Thanks for contacting Donjoy.
  • From terry ludwig at 8/6/2013 5:55 PM
    • I'm an old guy 72. My left ankle was infected with a staff infection a year ago.
      It is bone on bone now. The surgeon said a ankle fusion would help with the pain.
      I would rather not do that. Would an ankle brace help? If so which one would you recommend? I weigh 220. 6-3" My toll free phone is 1-888-795 1232
    • Hello Terry,

      Take a look at the Airsport Ankle Brace, this brace has a medial and lateral rigid support. Used for moderate support. The A60 also has rigid support but more streamlined, for Mild Support.

      Thanks for Contacting Donjoy.
  • From Angie at 16/9/ at 7.00 o! Clock at 9/16/2013 2:03 AM
    • Do I wear my Air stirrup ankle brace to bed?
    • It depends on the injury, if sleeping causes pain and discomfort then yes I would wear the brace to bed.
  • From Shaun at 10/3/2013 3:03 PM
    • Is the sizing measurements from the top to bottom of the rigid part of the brace?

    • Shaun,
      Yes that is correct the measurements are in reference to the length of the ridged stirrup.
  • From John at 10/5/2013 1:57 PM
    • I have a sev 3 sprain. Doc's prescription said to get a Medium Aircast Ankle Brace. The medical supply store only has size Large (Air-Stirrup ankle brace). My foot is size 11, but I have pretty slim ankles and lower leg. Is Large ok, or should I get a Medium do you think?
    • John
      The Aircast air-stirrup ankle Brace is sized by the hieght of the brace going up your leg, not shoe size. The medium is standard size and has a height of 9", the large is 10.5". The large should be fine on your leg. If you have anymore questions please do not hesitate to ask. Thank you for contacting product support.
  • From celeste coar at 12/15/2013 10:00 AM
    • Would the Aircast air stirrup ankle brace restrict mobility of the ankle
      so it could be worn at night as well as while swimming? I have a
      sprained ankle and am in a walking boot in the daytime. Or do you
      have something less cumbersome than to sleep in than a boot (the xcel trax air)

    • Celeste
      You can wear it to bed if you like. Thank you for contacting DJO
  • From Corinne at 2/8/2014 5:47 PM
    • I shattered my tibia and fibula and many years ago and have plates and pins holding it all together. I have re-injured it more than once. I was told after the last injury that I should be wearing an Aircast brace everyday. My question is I'm a plus size woman (large calves) who wears size 9 shoes but I'm only 5'6" would you recommend the large size? From the way I read the measurements it seems to be based more on height. Help! Also does this sound like it would be the right brace for this type of injury/need? There are a lot to chose from. :)
    • Corinne
      The Aircast AirStirrup akle Braces are sized based on the hieght of the brace. So you would measure from you r heel up to the lower third of your tibia. The brace should sit just below the belly of your calf muscle. I would suggest the aircast Airsport ankle brace for everyday use. It goes by shoe size and fits better into a shoe than the Airstirrup. Take a look at this one;
  • From Becky at 4/29/2014 6:27 PM
    • I had a question i had surgery on my ankle four weeks ago. My shoe size is 7 1/2 in ladies i am not sure if i should get a small brace or medium. please let me know thanks
    • Thank you for your question. The small Air Stirrup is 6” in height and the Medium is 8.75” in height. Height is measured from the base of the outer shell to the top. Generally the small is used for pediatrics most likely the medium would be sufficient.
  • From bhoomika at 6/22/2014 10:08 PM
    • 40 yes old male, had calcaneus fracture before 4 yes, operated with multiple nails that time and all removed afterwards
      Still complaining of pain while walking and instability sometimes. Walks with weight on lateral foot and heel.
      Kindly suggest the type of aircast brace that suits him
      Also size. His shoe size is 10. Expecting quick reply

    • If his pain is in the heel the the AirCast AirHeel w/Stabilizers will give him some relief of pain and give some ankle stability. The brace has a iar bladder in the heel and anhillies area that absorbs shock to those areas. The medium should fit him
  • From Felipe at 7/2/2014 8:02 PM
    • My Ankle Brace is 10" (25 cm), should I go Medium or Large?
    • The medium should work fine
  • From Louie Means at 7/6/2014 4:41 PM
    • what size Aircast Air-Stirrup Ankle Brace
      should I get for my son if his shoe size is 10.5 or 11?
    • louie
      If he wears a men's 10.5- 11 then the large, otherwise the medium
  • From Kathleen at 7/30/2014 6:40 PM
    • Could this be used at night? An untreated sprain from 15 years ago makes my foot curl in at night and it seems to me that preventing that would just feel better.
    • Kathleen
      Not sure what you mean by curl. If you foot bends down in the night and the toes curl then the Air Stirrup will not prevent this. We do have a night splint that will keep the foot and ankle in a 90 degree or neutral position while you sleep.
  • From Lynn at 8/7/2014 3:30 AM
    • Cannot find shoe tha fits over my brace. Too wide near the ankle bone and stirrup area where injury is...what do I wear over foot w brace? Will it through my hips out or create other issues if I have a shoe on one foot and only a sock on brace for?
    • Lynn
      A tennis shoe shoud be able to fit over the brace if you loosen it a lot, but if not you can wear a sandle or slipper.
  • From Pat at 8/8/2014 12:10 PM
    • The air cells on my 2 week old air cast do not remain in place and shift while I am wearing it. I need to readjust the cells so the plastic outer shell does not rub on my leg. Is there a suggested way to keep them where they are supposed to be?
    • Pat
      Your aircast has a 6 month warranty so I suggest that you take it back to where you got it and get it exchanged for a new one for qhality reasons. If you purchased it direct from go ahead and call BetterBraces at 800.553.6019
  • From Don at 8/12/2014 8:28 PM
    • I have a 15 year old playing football had a grade 2 inversion sprain 3rd practice
      He hopes to return to doing getting back to some sports activities next week.
      What would be the best brace to protect him. and would it be best to have the original stirrup aircast on now and then something else to return to sport. He is 5 days post injury.
    • Don
      The original Aircast Stirrup is a good idea right now but when he is ready to play again the DonJoy Stabilizing Pro Ankle brace is a good brace for athletes because it is similar to getting their ankle taped without the loosness that occurs after 30 minutes. It fits into all shoes easily and offers good support.
  • From Elizabeth at 9/8/2014 3:31 PM
    • I am quite heavy and have a chunky calf. How long are the velcro strips? Or, rather, the cast can fit a calf of up to how many inches wide?
    • Elizabeth
      The maximum ankle circumference for one of these braces is 16.5" The top strap on a small is 17.5" and the bottom is 16.5" those lengths should go slightly with the height of the brace
  • From Shameze at 10/9/2014 8:55 PM
    • Hi I broke my ankle had a hard cast on for about a month now needed no surgery now the doctor have me on this air stirrup brace I was wondering since its okay for me to shower wear sneakers can i take the brace off during bedtime and put back on in the morning
    • You will need to call your doctor and ask if it is alright to take the brace off at bedtime
  • From Val at 10/19/2014 9:48 PM
    • Broke my ankle (distal fibia). ER put this on me, over a tightly wrapped ace bandage. Wearing brace to bed and can't sleep due to pain on top of foot and burning sensation on top of foot. Is this a common complaint? Any solutions?
    • Val
      The ace wrap may be too tightly wrapped, the ankle brace would not cause that pain. Also keep your foot elevated when you sleep
  • From Richard at 10/21/2014 2:57 PM
    • Several years ago I had a severe ankle sprain and wore an Air Stirrup Cast which I still have to wear when I'm hiking or even walking in a river while fishing. When my ankle is everted or bent inward I have severe pain. My Air Stirrup Cast nowr needs replacing or perhaps at this point I need a different type of support mainly as I say to prevent eversion of the ankle. I need something that I can use inside my fishing waders. The Air Stirrup does just that but what if anything different might you suggest?.

      Thank you.
    • Thank you for your question. The Aircast Air-Stirrup Ankle Brace is s a great product. You can also look at the Aircast Airsport. This brace will have ridged uprights to support the medial/lateral aspects of the ankle, much like the stirrup. This Airsport will also have a strap that will give additional support to the ankle by helping to stabilize the joint.
      The Aircast Airsport can get wet. You would want to make sure to rinse well and let it air dry completely prior to next use.
  • From Ken at 11/25/2014 1:24 PM
    • The air bladders on my braces are cracked and torn. The air has leaked out. How can I get replacement air bladders for my braces?
    • Ken
      I am sorry we do not sell replacement bladders for that brace you would need to purchase a new brace
  • From Ken at 12/1/2014 8:20 AM
    • I have training braces for both ankles. I damaged or shredded ligaments in both ankles.

      My question is how do I get replacement air cells for my braces. I used to be able to get them on your web site but they no longer seem to be available.

    • Ken
      You can still order the replacement aircels but you will need to contact DJO direct at 800-336-6569
  • From Eric at 12/9/2014 4:53 PM
    • Hello, My PT recommended that I get an air cast to use while transitioning out of a full boot. I have a size 15US foot and am 6'5" tall, my calf measures about 13.5" at 8" off the ground. Would the large aircast stirrup fit? Thank you.
    • Eric
      The large Aircast Ankle Stirrup should fit your ankle. The straps are 17.5 " long
  • From David at 1/21/2015 10:18 AM
    • I had major ankle reconstruction over 20 years ago, and have worn an air cast when playing basketball ever since. I like the brace, but the bottom strap breaks too frequently and the velcro straps lose their ability to hold too often. Is there another brace type that you would recommend?
    • David
      I would reccommend the Air Casst Air Sport Ankle Brace. The brace is a more supportive version of an Air Cast Stirrup and it would be better for sports and is more durable.
  • From Tim Martin at 2/10/2015 5:21 PM
    • The upper strap on the large is not long enough to reach around my wife's calf. What is your suggestion?
    • Tim
      You may need to go with another brace if the strap will not fit. Possibley a non-sirrup type brace such as the Don Joy Stabilizing Pro ankle brace. the size is based on the circumference of the ankle.
  • From Judith at 3/6/2015 7:20 PM
    • Can I wear the Air Stirrup for swimming?
    • Judith
      Yes you can wear this brace while swimming
  • From diana lamanno at 3/23/2015 8:15 AM
    • Diana
      Our Aircast Air Stirrups that are white are right and left specific so if you have one for the right it will not fit correctly for the left.

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