Frequently Asked Questions

frequently asked questions (WG80 Pro)

Q1. Who is the WG80 Pro designed for?

The WG80 Pro is suitable for users who want firmer and more stable lumbar support than a conventional back brace.

It may be particularly suitable for office workers who sit for long periods, long-distance drivers, and people

who frequently perform household tasks involving bending or lifting.

It may also suit users who want firmer support than the WG50 G2

but find the WD57P hard-frame structure too rigid or bulky.

Q2. What should I consider before using the WG80 Pro?

WG80 Pro is an inflatable lumbar traction device that can help those who need lumbar traction management due to conditions such as herniated discs and degenerative stenosis.

Individual suitability may vary. Users with severe pain, an acute condition, a diagnosed spinal condition, or those considering use before or after surgery should consult a healthcare professional before using the product.

or those considering use before or after surgery should consult a healthcare professional before using the product.

Q3. Is it okay to wear it continuously during daily life?

The WG80 Pro features a lightweight double-belt and soft-frame structure designed for everyday wear.

However, it is recommended to keep the recommended usage time and air pressure of the user manual rather than wearing it continuously for a long time.

If you feel uncomfortable, numbness, or pressure while wearing it, remove the air immediately and stop wearing it.

Q4. What are the advantages of the inflatable method?

The air-inflation system allows users to adjust the level of support

and traction according to their body shape and preferred fit.

Unlike a conventional back brace that relies mainly on compression,

the WG80 Pro uses adjustable air pressure to provide lumbar support and traction.

Q5. What is the biggest difference from WG50 G2?

The WG50 G2 is designed to balance everyday wearability

and lumbar support through its double-belt structure.

The WG80 Pro adds a soft-frame structure for users who prefer firmer and more stable support.

Q6. How is it different from the WD57P?

The WD57P uses a hard-frame structure to provide firm stabilization and support.

In contrast, the WG80 Pro uses a soft-frame structure designed to reduce bulk

while maintaining lumbar support and traction.

The WG80 Pro may be more suitable for users who want a balance between everyday wearability and support.

Q7. How do I choose the right size?

Measure your actual waist circumference at the navel with a tape measure and compare it with the size chart. The WG80 Pro comes in 6 sizes, from XS (24–25 in) to 2XL (36–40 in).

If the size is ambiguous, it is recommended to choose it considering the fit and adjustment.

FAQ (WG50G2)

Q1. Which users are suitable for the WG50 G2?

The Disk Doctor WG50 G2 is suitable for those who want higher support than the basic type while looking for lumbar support products that can be worn in everyday life.

I especially recommend this to those who fall into the following categories.

Those who have been suffering from a herniated disc (intervertebral disc protrusion) or chronic lower back pain for more than 3 years
Those with symptoms of radiating pain, such as leg numbness or a sensation of coldness in the legs
For those who have not seen sufficient results with conventional physical therapy or medication alone
People who sit and work for more than 6 hours a day or drive for long periods

In a clinical study of orthopedic surgery at Seoul Paik Hospital in Inje University College of Medicine, 80.5% of 328 people wearing Disk Doctor inflatable lumbar traction devices were diagnosed with intervertebral disc herniation, and 52.2% were patients with chronic low back pain for more than 3 years.

In other words, this product can provide substantial help to those with chronic back problems, not just simple fatigue.

Q2. What symptoms is WG50 G2 most effective for?

The Disk Doctor WG50 G2 is

It is suitable for those who require lumbar traction due to a herniated disc or spinal stenosis.

A double belt separated from the top and bottom strongly pushes the spine up and down when inflated to help distribute the load and relieve pain.

According to the Inje University Seoul Paik Hospital clinical study (1st), pain relief was confirmed within 3 days in 18 out of 22 (about 82%) after wearing an air-injected waist guard.

In addition, radiographic examinations after wearing showed that the gap between the 4th and 5th lumbar vertebrae was stretched by an average of 2 mm.

This is a figure that objectively shows that the pressure between the vertebrae is actually reduced.
In addition, in the second study (328 subjects), 90.5% (297 subjects) answered that they had pain relief effects after wearing them, which is higher than the pain relief response rate (63.4%) of conventional physical and drug treatments.

Q3. Is it okay to wear it continuously during daily life?

Yes, the disk doctor WG50 G2 is a model that considers both support and activity and is suitable for everyday wear such as housework, office work, and light walks.

However, it is recommended to remove the device when lying down or sleeping, as it may not provide the desired traction effect and may strain the body.

In the second clinical study at Inje University Seoul Paik Hospital, 74.7% of the wearers answered that they wear it for more than 12 hours a day, and the researchers concluded that "Wearing an assistive device does not interfere with daily life and helps relieve pain."

It has been clinically confirmed that the comfort is excellent even when worn for a long time.

Q4. What are the advantages of the inflatable method?

The Disk Doctor WG50 G2 is

After wearing, you can adjust the air pressure to finely customize the fit and support to suit the user's body type and condition.

It is a method whose effectiveness has been clinically confirmed.

According to Inje University research, the air-injected corset reduces disk pressure by about 25% (quoted by the research by Nachemson & Morris), and works by applying traction to the lumbar region between the lumbar vertebrae 1 and 5 with air pressure, not just a pressure method around the waist, creating a sense of space and stability between the vertebrae.

In addition, the effect of reinforcing the strength of the extensor muscles (muscles that straighten the back) was confirmed in isokinetic exercise evaluations after wearing.

What is the main difference between the WG30 G2 and the WG50 G2?

The Disk Doctor WG50 G2 is a high-end model for those seeking greater support and stability.

The higher belt height wraps around the lumbar spine over a wider range, and the double-belt structure provides stronger vertical traction.

The WG50 G2 is more suitable for those with relatively severe back discomfort or those diagnosed with conditions such as herniated discs or spinal stenosis.

Q6. How is it different from the WD57P?

The Disk Doctor WG50 G2 is a product focused on balancing daily usability and support.

It provides a high traction effect while allowing you to continue daily activities such as housework, office work, and going out even after wearing it.

On the other hand, WD57P has a strong intensive-support model that prioritizes higher stability, so it is suitable for those who need intensive waist care rather than daily activities.

Q7. How do I choose the right size?

Measure your actual waist circumference at the navel with a tape measure and compare it with the size chart. The WG50 G2 comes in 6 sizes, from S (24–26 in) to 3XL (41–46 in).

If your measurement falls between two sizes, choose based on your body shape and preferred fit.

Q8. Has the product's effectiveness been verified through clinical studies?

Yes, the Disc Doctor inflatable back brace is

The effectiveness was verified through official clinical research at the Department of Orthopedic Surgery, Seoul Paik Hospital, Inje University College of Medicine applying traction to the lumbar region

The key clinical results are summarized as follows.

As a result of the items, about 82% of the pain relief rate (1st clinical trial, 22 patients) confirmed pain relief within 3 days (90.5% of the pain relief rate (2nd clinical trial, 328 patients) responded to pain relief after wearing it compared to the existing treatment (63.4%)

High-level spinal spacing change average 2mm per lumbar spine 4-5 intervals After wearing muscle strength reinforcement, the lumbar extensor muscle strength effect is confirmed 74.7% of wearers wear for more than 12 hours. 88.1% of respondents who want to recommend other people's recommendations. This study includes not just a simple questionnaire, but an objective test using a constant-velocity motion measurement device (Cybex 6000).

FAQ (WD57P)

Q1. Who is the WD57P suitable for?

It is suitable for those who want firm waist support with a hard-frame structure and pneumatic traction.

In particular, it is usually visited by those who feel insufficient as a general protector or who need strong stabilization and traction at the same time, such as stenosis and severe disks.
In a clinical study at Inje University Seoul Paik Hospital (328 people), 52.2% of the wearers were patients with chronic low back pain for more than 3 years, and 64.3% were cases accompanied by radiating pain such as leg numbness.

This product has been confirmed to have a pain relief rate of 90.5% even in individuals with such complex and chronic symptoms.

Q2. Is the inflatable method actually effective?

This is a method that physically reduces disc pressure by using air pressure to **extend (traction)** the space between the 1st and 5th lumbar vertebrae up and down, rather than simple compression.

After wearing it, you can adjust the air pressure to finely customize the support to suit your body type and condition.

In the first clinical study (22 subjects), radiographic examination results after wearing it objectively confirmed that the space between the 4th and 5th lumbar vertebrae was stretched by an average of 2 mm, and an international study (Nachemson & Morris) also reported that an inflatable corset reduces disc pressure by approximately 25%

In addition, the effect of maintaining muscle strength in the lumbar extensor muscles (muscles that straighten the back) after wearing was also confirmed.

Q3. What is the difference between the WD57P and the WG50 G2?

Both products use an air-inflation traction system, but the key difference is the presence or absence of a hard-frame structure on the rear panel.

The WD57P's hard-frame structure directly supports the spine from behind, physically preventing the lower back from collapsing forward.

It provides a sense of stability, just like leaning back in a chair.
If the WG50 G2 is an everyday wear model that balances activity and support, the WD57P is an intensive care model that prioritizes stability.

If mobility is more important when going out, the WG50 G2 is suitable, and if strong fixation is needed indoors, the WD57P is suitable.

Q4. Can it be worn during daily life?

It can be worn in relatively static activities such as housework, office work, and indoor movement, but it is a model for those who prioritize solid support and fixation over activity.

In a clinical study, 74.7% of the wearers responded that they wore it for more than 12 hours a day, and the researchers evaluated this as “not significantly interfering with daily life.”.

However, this product is better optimized for intensive indoor care rather than strenuous outdoor activities.

Q5. Is it suitable for use by patients with spinal stenosis or severe disc problems?

Users with diagnosed spinal conditions should consult a healthcare professional before use.

The rigidity of the hard-frame structure combined with pneumatic traction effectively distributes the load on the spine.

72.0% subjects in the clinical study were diagnosed with herniated discs, and in the first study (22 subjects), approximately 82% subjects experienced pain relief within 3 days of wearing.

In the second study (328 people), 90.5% also reported pain relief, which is significantly higher than the relief rate of conventional physical therapy and drug treatment (63.4%).

However, if you are in a pre- or post-operative condition, we recommend consulting with your doctor before wearing it.

Q6. How do I choose the right size?

Measure your actual waist circumference at the navel with a tape measure and compare it with the size chart. The WD57P comes in 6 sizes, from S (24–26 in) to 3XL (41–46 in).

If the hard frame position is too tight, the pressure can be increased, so if the measurement perimeter falls within the size boundary, please choose a size that is one step larger.

Q7. I spend a lot of time sitting; is it okay to wear this?

The hard-frame design may provide noticeable support during seated activities.

The hard panel supports the spine from behind to keep it upright, preventing the lower back from collapsing during prolonged sitting.

However, if worn for a long time, the bottom of the belt may touch your thighs and cause discomfort, so please adjust the wearing position slightly higher than usual to find the optimal position.

Q8. Can I wear it under my clothes when going out?

Due to the thickness of the back panel, it may be visible through thin clothing.

We recommend wearing it under loose outerwear when going out, or using it for intensive indoor care.

WG50 G2 is more suitable for outings where activity is important.

Q9. Can I use it immediately after surgery?

If it is immediately after surgery, you must make a decision after consulting with the attending specialist.

Inje University's clinical study also confirmed an auxiliary effect on both acute and chronic low back pain patients, but the timing of wearing may vary depending on the surgical site and recovery condition.

Use after surgery should be determined only in consultation with the treating healthcare professional.

Q10. Has the product's effectiveness been verified through clinical studies?

Yes. Two official clinical studies were conducted at the Department of Orthopedic Surgery, Seoul Paik Hospital, Inje University College of Medicine, and,

The effectiveness has been proven through objective data using radiographic examination and an isokinetic motion measurement device (Cybex 6000).

FAQ (CS500 G2)

Q1. How much and how many times a day should I use the CS500 G2?
A. We recommend using the CS500 G2 about 3–4 times a day, for 15–20 minutes per session.
When using it for the first time, rather than using it for too long, start with short sessions and gradually increase the time according to your condition.

Q2. Is it normal for my jaw to hurt when I put air in it?
A. Fit may vary individually depending on the shape of the jaw and head.
If you inflate it with too much air or tighten the dial excessively, you may feel strong pressure on your jaw, so we recommend starting with a low setting and using it slowly.
If you feel strong pressure on your chin but little support for your neck, check the wearing position and method again.

Q3. It feels like the traction isn't working well. Is this normal?
A. The traction sensation may vary depending on the amount of air injected, wearing position, degree of dial adjustment, and body type.
The CS500 G2 itself expands by about 4 to 5 cm, but the neck does not actually extend that much.
If the traction feels weak, check the wearing position, dial adjustment, and air pressure. Use the device only within the recommended range specified in the user manual.

Q4. In what position should I use the CS500 G2?
A. The CS500 G2 can be worn while sitting or standing, and with the dedicated stand included as a standard component, it can also be used while lying down.
The most common way is to use it while sitting, which works well when you are seated comfortably, such as during a break at work or while watching TV.
When you want to relax your body and use it for a focused session at home, you can choose the lying-down position.
In any position, keep a stable posture so that your neck and body do not lean to one side, and do not use the product while walking, moving around, or driving.

Q5. Can I use it lying down?
A. Yes. The CS500 G2 comes with a dedicated stand as a standard component, so you can use it while lying down without any additional purchase.
Place the stand on a flat surface and secure the product firmly, then lie down straight and adjust the position so that your neck and chin rest evenly on the product.
Inflate slowly starting from the lowest level, and avoid using it for long periods while asleep. Please refer to the user manual for detailed setup instructions.

Q6. My neck is short or thick. Can I still use it?
A. The fit may vary depending on your neck length, neck circumference, and jaw shape.
Start with the dial and air pressure set low, and find the wearing position that suits you best.

Q7. Can it be used for straight neck, forward head posture, or reverse cervical curve?
A. The CS500 G2 can be used to manage neck and shoulder strain built up from long hours of looking down.
However, neck conditions and their causes vary from person to person, so results may differ individually. For more complex conditions such as a reverse cervical curve (cervical kyphosis), we recommend consulting a medical professional before use.

Q8. Can I use it if I have a neck condition?
A. If you have a medical condition or significant discomfort, we recommend consulting a professional before use.
Start at a low intensity, and stop using it if numbness or discomfort continues during use.

Q9. Is after-sales service available if the product won't inflate or the hose or dial breaks?
A. Yes. The Disk Dr. CS500 G2 comes with free after-sales service for 1 year from the date of purchase, paid after-sales service from year 1 up to year 7.
If you experience any issues during use, such as inflation problems or issues with the hose connection or dial, please contact our customer service center. Providing the product name, date of purchase, and the barcode information on the product will help us process your request faster. Repair methods and costs may vary depending on the product's condition.

Q9. Can the bracket and traction belt be washed?
A. Yes, they can be washed.
However, after locking it tightly so that water does not enter the air inlet, you should hand wash it lightly with a neutral detergent. After washing, it is recommended to dry it naturally in the shade.

FAQ (CS300)

Q1. How much should I use the CS300 per day?

A. It is generally recommended to use CS300 2 to 4 times a day, divided into 15 to 20 minutes each time.
Rather than wearing it for a long time from the beginning, it is better to start from a short time and adjust it according to your condition.

Q2. Can the CS300 be used while lying down?

The CS300 may be used while seated or lying down, provided that the user maintains a comfortable and stable position.
Do not use the product while walking or moving around.

Q3. Is it normal to feel pressure or tightness when wearing the device?

A. If you tighten the Velcro too hard or inject too much air at once when using it for the first time, it may feel stuffy.
In the beginning, it is recommended to adjust the Velcro to a comfortable level and then slowly adjust to low pressure. If you feel uncomfortable, it is recommended to adjust by reducing the usage time.

Q4. Can I talk while wearing it?

A. The CS300 supports the jaw area, so there may be some restrictions on the movement of opening the jaw wide.
However, general conversation is possible, and the exact fit and degree of inconvenience vary from person to person.

Q5. I experience discomfort around my shoulders or neck while using it. Is it okay to continue using it?

A. When first using the device, you may experience unfamiliar pressure or mild discomfort around the neck or shoulders while traction is being applied.
In this case, it is recommended to adjust by reducing the time of use and lowering the pressure. Since the fit and response vary from person to person, it is better to adjust it according to your condition rather than overuse and use it for a long time.

FAQ (DIDOC FIT)

Q1. Is it necessary to have degenerative arthritis or a patella problem to use this?

That is not the case. Even if you have not received a diagnosis, anyone who meets the criteria below can use it.

For those who feel strain on their knees while exercising, such as running, hiking, badminton, or weightlifting
For those whose knees twist or experience sharp pain when going up and down stairs
People whose knees frequently get tired due to jobs that require standing or walking for long periods
For those who started running after gaining weight and feel strain on their knees
For those who feel that existing knee braces provide insufficient support

In actual reviews, not only those diagnosed with degenerative arthritis and dislocation of the patella, but also those who started running for a diet, those who felt uncomfortable with their knees after hiking, and those who felt pain during squat exercises were often used and reported satisfaction.

Q2. What are the symptoms for which customers most frequently seek DIDOCFIT?

Based on an analysis of actual buyer reviews, the people with the following symptoms made the most purchases.

Knee pain during running and exercising — Exercise-related pain was the most motivation to purchase, such as "because my knee is uncomfortable whenever I run" and "because of knee strain while exercising."
Patella problems — People who usually have to wear protective pads due to dislocation of the patella and tendonitis often sought it because they wanted to wear it and support it.
Ligament Injury and Rehabilitation — There were people who used it for light rehabilitation exercises after anterior cruciate ligament rupture or surgery, or for the purpose of relieving iliotibial band pain.
Degenerative arthritis and cartilage damage — there were also many cases where people purchased these products to support their knees during daily walking due to their parents' or their own cartilage and joint problems.
Knee strain after hiking — it has been confirmed that people who experienced significant knee discomfort during descent are using it for trekking.

Q3. How do I select the size?

It is most accurate to measure the center of the knee with a tape measure and select based on the size chart.

If you fall within the borderline size range, please consider the thickness of your thighs and calves when making your selection.
There was a review stating, “I was on the borderline for the size, so I bought a smaller size and it is a bit tight.”.

Depending on your body type, you may feel a gap in the patella area when inflating; this is a characteristic of the open patella structure and is within the normal range for wear.

If you have a body type with a well-developed lower body, we recommend choosing one size larger for a comfortable fit.

Q4. Should I avoid wearing it too often? Is there an appropriate daily wearing time?

There is no separate time limit.

It is recommended to wear it during activities such as exercise, household chores, and long-distance trekking, as it does not cause discomfort even when worn for extended periods and actually provides stable support for the knees.
In an actual review, it was stated, “I wore it almost every day for a month while doing squats, and it was a great help.”,

Reviews have confirmed that “I ran a 10km marathon and experienced no discomfort” and “I used it comfortably even during long-distance trekking.” However, if you have skin irritation or blood circulation issues, we recommend removing it periodically.

Q5. Does the pain actually decrease after wearing it?

It was confirmed that there were numerous instances in reviews mentioning pain improvement.

“The pain in my right iliotibial band has almost disappeared.”

“The pain has decreased a lot because it is supported by air pressure.”

“I had a knee injury that made trekking very uncomfortable, but now I can enjoy it comfortably.”

“I had avoided exercise because of my bad knees, but this product provided firm support, eliminating the pain and allowing me to start running again.”

However, the effects you experience may differ depending on your personal symptoms and how you wear them, and if you have severe pain or a specific disease, please consult a specialist at the same time.

Q6. What is the difference between DIDOCFIT and NK10?

NK10 is a medical device specialized in fixing and supporting the knee area.

On the other hand, DIDOCFIT is an inflatable knee brace designed to consider both comfortable wear and mobility during sports activities.

If you want both comfort and support while engaging in activities with a lot of movement, such as running, hiking, or badminton, DIDOCFIT is more suitable.

Expressions such as “it is comfortable to exercise because it is an open type” and “a brace that becomes more comfortable the more you run” were also confirmed multiple times in the reviews.

Q7. Which product is more suitable, DIDOCFIT or NK30?

The NK30 is a long-sleeve type that covers not only the knee joint but also the thigh muscles and ligaments more widely.

It is suitable for those who need wide support above and below the knee, or for those for whom ligament protection is a priority.

DIDOCFIT is better suited for those who want to maintain maximum mobility while providing intensive support to the center of the knee.

In an actual review, a person who used NK30 with him compared, "The NK30 felt tight on the thigh side, but the DIDOCFIT clearly held the knee and did not interfere with the activity."

Q8. Which activities is DIDOC FIT suitable for?

It is highly utilized throughout exercises that use the knee repeatedly, such as running, climbing, jogging, badminton, fitness (squat), walking, and long-distance trekking.

The major activities identified in the review are as follows:.

Running/Jogging — “I ran a 10km marathon and felt no discomfort,” “It felt like it provided more robust protection starting from the 3km mark”
Hiking & Trekking — “Used it comfortably even for long-distance trekking,” “My knees felt better when descending”
Weight Training · Squats — “I did 150 squats and felt no pain,” “It provides good knee support when squatting”
Badminton — “It’s really good when playing badminton”
Daily Walking — “I walk 10,000 steps every day with almost no discomfort,” “It is much more comfortable when walking”

Q9. Who would you recommend DIDOCFIT to?

We especially recommend this to those who meet the following conditions.

Those who have used several existing knee pads but left them unattended due to lack of support, those who feel their knees shake or twist during activities such as running and climbing, those who want to resume light exercise after dislocation of the patella, pain in the long neck ligament, and damage to the cruciate ligament need knee support when walking daily due to degenerative arthritis and cartilage damage. Those who seek ventilated and active products instead of thick and stuffy protective pads

Frequently Asked Questions (DIDOC FIT AIR)

Q1. How do I select the size?

DIDOC FIT AIR is a one-size-fits-all product, so no separate size selection is required.
The package includes straps of two different lengths, so you can choose the strap that fits your leg circumference.
If your thighs or calves are on the thicker side, choose a long strap; if they are on the slimmer side, choose a short strap.
The degree of compression can be finely adjusted by the amount of air injected, allowing for a fit that fits your body shape.

Q2. In what situations do customers look for DIDOC FIT AIR the most?

DIDOC FIT AIR is a product primarily sought after by those who experience strain on their knees while running, working out, hiking, or walking in daily life.
Knee pain during running or jogging is the most common motivation for purchase.
It is common for people who are concerned about their knees while running or experience recurring knee pain after running to seek help for the first time.
“There is also someone who said, ”I bought this because of knee pain while running, and I can definitely feel the pain decreasing.”.
It is also frequently purchased for the purpose of protecting the knees during weight training or squats.
It is usually visited by those who feel knee strain in both weight and running or squat movements, and many beginners who have just started exercising buy it for preventive purposes.
There are also cases where people purchase it before hiking or trekking.
The purpose is to prevent excessive strain on the knees during the descent section of a long-distance hike.
There are also people looking for it for daily wear for everyday walking and commuting.
People who feel that their knees are not as good as before or feel unstable even during light walks choose it for daily use because of its light and slim fit.
In summary, DIDOC FIT AIR is the most used product for the purpose of reducing strain on the knee that is repeated during exercise and daily life rather than a serious disease.

Q3. I currently have a knee brace; would it be better to purchase the DIDOC FIT AIR?

If the protector you are currently using fits well, it is fine to continue using it.
However, if any of the following apply to you, DIDOC FIT AIR will make a definite difference.
This is the case when tightening is frustrating, when loosening it feels ambiguous due to lack of support, when the brace slips down or is pushed during activity, and when wearing it for a long time, the pressure is uncomfortable.
In fact, many people said, "The protector I used before was uncomfortable when tightened, and it was ambiguous because it lacked a feeling of holding it when loosened, but this is convenient because you can control the air pressure yourself."
Even if you feel unfamiliar with the air injection method, it is simple to use and easy to attach and detach, so even those who use it for the first time can use it without difficulty.

Q4. Does wearing DIDOC FIT AIR actually reduce knee pain?

DIDOC FIT Air is not a medical device that treats knee pain, but is a product that stably supports the knee with air pressure to reduce the burden on the knee during activity.
It doesn't directly eliminate the pain itself, but rather it catches the knee shaking or moving unsteadily

It is the principle that makes pain feel less intense during activity.
In fact, there are many people who have had this experience.
For those who experienced knee pain while running →
“I can definitely feel the pain decreasing.

Don't regret trying out various cheap braces; settle on this one.”
For those who frequently experience knee pain →
“It provides good support. I think I'll use it well when running as well.”
Those who felt burdened while walking or running →
“It makes running and walking less strenuous. I highly recommend it.”
However, the perceived effect may vary depending on the cause of individual symptoms and how it is worn.
If the strain on the knees is simple, you often feel the effects, but,
If there are structural problems such as ligament damage, cartilage damage, or arthritis
Products with stronger support, such as DIDOC FIT or the NK series, may be more suitable than DIDOC FIT AIR.
If the pain persists or is severe, we recommend consulting a specialist.

Q5. Should I avoid wearing it too often? Is there an appropriate daily wearing time?

There is no separate time limit.
Many people wear it daily not only during exercise but also in everyday life such as commuting and walking.
Some customers have commented that the product remains comfortable during extended wear and is suitable for everyday use. However, excessive air pressure may restrict circulation. Adjust the pressure to a comfortable level and stop using the product if you experience excessive tightness, numbness, or discomfort.

Q6. There are several types of Disk Doctor knee braces. How do I choose the right one?

You can choose based on your purpose of use and the level of symptoms.
DIDOC FIT AIR is suitable for those who want a light and slim fit with important activity, such as running, fitness, jogging, and daily walks.
It features an adjustable one-size design so you can use it without worrying about the size.
DIDOC FIT is suitable for those who need stronger support, such as climbing, badminton, and squats, or who need more knee stability due to patellar or ligament-related support needs
NK10 and NK30 are suitable for those with knee diseases such as degenerative arthritis and cartilage damage, and NK30 supports the thighs and ligaments widely.
If your goal is simple exercise assistance and daily wear, please consider the DIDOC FIT AIR; if you have knee pain or a condition, please consider the DIDOC FIT or NK series first.

Q7. Who is DIDOC FIT AIR the best fit for?

DIDOC FIT AIR is the best product for those who need knee protection during exercise but find thick, bulky braces burdensome.

For those who want to lightly protect their knees during activities such as running, weight training, or jogging,

For those who want to wear a free size conveniently without worrying about the size,

For those who want to directly adjust the compression intensity according to the situation,

For those who want to wear it comfortably every day, such as during commutes or walks,

For those who have tried several braces but found them uncomfortable because they felt stuffy or kept slipping down,

It is suitable for beginners who have just started fitness or running and need light knee protection for preventive support.

Frequently Asked Questions (NK10)

Q1. What is the difference between NK10 and NK30?

Both the NK10 and NK30 are inflatable knee braces, but they differ in range of support and fit.
The NK10 is a short type that provides intensive support to the center of the knee.
Its short length minimizes snagging during activities, and it is not very noticeable even when worn under long pants.
It is suitable for those who want to wear lightly during hiking, exercise, and daily life, and those who need to move freely due to a lot of activity.
In fact, many people have told me that “since it is a short type, there is absolutely no discomfort when moving around.”.
NK30 is a long type that covers a wider range of areas up to and down the knees. It is suitable for those who need more stability in their entire knees by supporting the lower thighs and upper calf, and those who have severe knee joint damage or are in rehabilitation after surgery.
In summary, NK10 is suitable if you want activity and easy wear, and NK30 if you need wider and stronger support.

Q2. Who would you recommend the NK10 to?

NK10 is the most sought-after product for those who have to continue their activities even if they feel burdened by their knees.
It is most sought after by people experiencing knee pain while hiking or descending.
The knee strain is concentrated when coming down rather than when going up, and many people said, "My knees didn't hurt at all when I went down" after wearing NK10.
Many people also wear this if they experience knee clicking or aching during weight training, squats, or running.

Those who enjoy sports with frequent changes of direction, such as badminton, tennis, and soccer,
People with jobs that require standing all day or going up and down stairs,
Those suffering from degenerative arthritis, cartilage damage, or undergoing rehabilitation after surgery,

This product is also frequently recommended for those looking to give it as a gift to their parents.
Even if the knee pain is not very severe, it is also suitable for those who feel unstable when walking or want to wear it for preventive purposes.

Q3. How do I select the size?

NK10 is most accurate to choose the size based on the center of the knee.
Measure the center of the knee before the thigh or calf and compare it with the size table.
There is one thing to note.
Even if your knee circumference meets the size criteria, those with well-developed thigh muscles may find the upper part of the product tight when worn.
As mentioned by someone who said, “I chose S based on my knee size but exchanged it for M because of my thighs,” if you are a man with well-developed lower body muscles, please consider choosing one size larger.
Since the pressure intensity can be controlled by air injection, if the size is caught on the boundary, you can improve the fit by adjusting the air pressure even if you choose a more relaxed side.

Q4. If the size is on the borderline, which size should I choose?

If the measured value is caught in the boundary section, it is recommended to consider the thigh and calf thickness together.
If your thighs or calves are relatively thick, please choose a large size first, and if you are slim, choose a small size first.
NK10 can directly control the pressure intensity with the amount of air injection, so even if the size is a little relaxed, you can keep the knee close through the air.
On the contrary, please be careful because the size that is too tight can be uncomfortable to wear or put pressure on blood circulation even when the air is removed.
Since there may be differences in feeling depending on the body type, it is recommended to check the size table togetAher after measuring the exact tape measure before purchasing.

Q5. Are there larger sizes available?

Currently, the NK10 is available in sizes S, M, and L.
If the knee circumference is far out of the recommended range, it may be difficult to choose the size, so be sure to measure the center of the knee before purchasing and check it with the size table.
For body types with thick thighs or thick lower body overall, choosing one size larger than the knee circumference can help increase comfort when worn.

Q6. Can I wear it all day?

There is no separate strict time limit for wearing.
Many people wear them for a long time during commuting, throughout work, and throughout the mountain climbing process.
Some people said, "There was no inconvenience even if I wore it all day long," and "It's okay to wear it all the way around."
However, if you wear it directly on your bare skin, wearing it for a long time may cause itching or skin irritation at the back of your knee.
If your skin is sensitive, it is recommended to wear it over a thin cotton innerwear or loosen it for a while in between to rest your skin.
Excessive injection of air pressure can put a strain on blood circulation, so please adjust it according to your condition while maintaining proper pressure.

Frequently Asked Questions (NK30)

Q1. How do I select the NK30 size?

For the NK30, please check the center of the knee circumference first, but,
It is important to make sure to also consider the circumference of the lower thigh and upper calf when selecting.
The NK30 is a long type that is longer than the NK10 and has a structure that wraps around down to the lower thighs.
There are quite a few people who have said that they chose based only on knee circumference and found it uncomfortable because the thighs were too tight.
"I ordered an S just looking around my knee as a gift, but my thighs and upper calf were too tight, so I exchanged it for an M," someone said.
In addition to the knee circumference standard, it is recommended to consider the circumference to the lower thigh and upper calf.
The detailed size of the entire product is marked at the bottom of the product details page, so please check and select.

Q2. If the size is on the borderline, which size should I choose?

If the size is caught in the boundary section, it is safe to choose a larger size based on the thickness of your thighs as a priority.
Since NK30 is a structure that covers not only the knee but also the bottom of the thigh, it may be difficult to wear if the thigh is thick even if the size is small based on the knee circumference.
The amount of air injection and the strap can adjust the pressure strength, so even if you choose a slightly more relaxed size, you can increase the adhesion of the aero.
On the contrary, if the size is too small, it can be difficult to tighten your thighs or wear them, so if you get caught on the boundary, consider the larger one first.

Q3. What is the difference between NK30 and NK10?

Both products are inflatable medical knee braces, but they differ in range of support and mobility.
The NK30 is a long type that covers widely up to the knees.
It supports the lower thigh and upper calf together, making it suitable for those who need greater stability for the entire knee.
NK30 is suitable for cases where overall support is needed due to poor knee condition, such as degenerative arthritis, cartilage damage, ligament injury, or post-surgery rehabilitation, or when you want wider and stronger support than NK10.
“Some people have also mentioned that "the longer product seems to provide better support than the short one.".
The NK10 is a short type that provides intensive support only to the center of the knee.
Its short length allows for freedom of movement, and it is not very noticeable even when worn under long pants.
It is suitable for those who want to hike, exercise, and go about their daily lives while lightly protecting their knees.
There are many people who try the NK10 first, are satisfied, and then purchase the NK30 as an additional unit.
It is also a good idea to differentiate between using NK10 for daily activities and light exercise, and NK30 when your knee condition is worse or you need overall support.

Q4. Does the NK30 come as a single side only, or as a set for both?

The NK30 is sold individually. Purchase two units to wear the product on both knees.
If you want to wear them on both knees, you must purchase 2 separately.
In the reviews, there was also a comment saying, “I tried one side and liked it so I ordered another one.”,
“Many people have told me that they purchased additional ones to wear on both sides.
Please be sure to check the product composition before purchasing and order the required quantity.

Q5. How do I release the air after inflating it?

Lightly press the button in the center of the air inlet to release the internal air.
Many people have told me that it is easy to operate, requiring only a light touch with a finger.
To inflate, connect the enclosed hand pump to the valve and press a few times. Once you reach your desired compression level, detach the pump. If the compression feels too strong, gently press the valve button to release a small amount of air and adjust the pressure to your preference.
When using it for the first time, you can quickly learn how to use it by referring to the enclosed instruction manual.

Q6. Can I wear it all day? Can I wear it while sleeping?

There is no separate time limit for wearing, so you can wear it freely for as long as needed during hiking, exercise, or daily walking.
There are many people who wear it all day long.
However, wearing it while sleeping is not recommended.
While sleeping, changes in posture can cause excessive pressure or strain blood circulation, and it is difficult to perceive the pressure yourself. It is recommended to wear it during daytime activities and remove it before going to bed. You can directly adjust the compression intensity by controlling the amount of air injected, so if you experience numbness or discomfort while wearing it, please release some air or loosen the strap.

Q7. Can I use it for hiking, walking, or exercising?

The NK30 is the most widely used product by people who need knee support during hiking, walking, and daily activities.
In particular, many people have told us that the strain on their knees has been significantly reduced when going up and down stairs and descending.
“There are also people who have shared their experiences, saying, ”Going up and down stairs became much easier because the air pressure supported my knees,“ and ”I felt less knee pain even after hiking.”.
Many people wear them in their daily lives, even while exercising such as weightlifting, squatting, badminton, tennis, and golf.
However, if you have severe knee pain or are in the middle of rehabilitation after surgery, it is recommended that you start with light walking and gradually adapt rather than engaging in strenuous exercise.
When first wearing it, it is recommended to start with short activities and gradually increase the wearing time according to the condition of your knee.