Achilles tendinitis is a condition that causes pain and discomfort in the back of the heel, often affecting those who engage in activities that put stress on the Achilles tendon. This condition can range from mild discomfort to severe pain, impacting everyday activities and athletic performance. Understanding the symptoms, causes, and treatment options is crucial for managing this common overuse injury effectively.
What is Achilles Tendinitis?
Definition and Overview
Achilles tendinitis is an inflammation of the Achilles tendon, which connects the calf muscle to the heel bone. This condition, also known as Achilles tendinopathy, occurs when the tendon is stressed or overused. The tendon can become thickened and painful, leading to symptoms that can significantly interfere with daily life. It is essential to recognize these symptoms early to prevent further complications, such as a tendon rupture.
How Common is Achilles Tendinitis?
Achilles tendinitis is a common condition, particularly among athletes and individuals who engage in repetitive physical activities. Runners, for example, are at a higher risk due to the continuous stress placed on the foot and ankle during running. However, it is not only athletes who suffer; anyone who suddenly increases the intensity or frequency of their activities can develop this condition. The prevalence of Achilles tendinitis highlights the importance of awareness and preventive measures in sports medicine.
Who is Most at Risk?
Individuals most at risk for Achilles tendinitis include those who participate in sports that involve running, jumping, or sudden starts and stops. Additionally, people with tight calf muscles or those who wear improper footwear are more susceptible to developing this condition. Age can also be a factor, as tendon flexibility decreases over time, increasing the risk of injury. Understanding these risk factors can help in preventing the onset of Achilles tendinitis.
Recognizing the Symptoms of Achilles Tendinitis
What Are the Early Signs of Achilles Tendinitis?
Early signs of Achilles tendinitis often include a mild ache in the back of the heel, swelling, and tenderness. These symptoms of Achilles tendinitis might be more noticeable after physical activity or first thing in the morning. Recognizing these early signs is crucial for initiating appropriate treatment and preventing progression.
How Do Symptoms Progress Over Time?
If left untreated, the symptoms of Achilles tendinitis can progress from mild discomfort to severe pain, potentially leading to an Achilles tendon rupture. Over time, the tendon may become more inflamed and the pain more persistent, especially during physical activity. This progression underscores the importance of early intervention and management to avoid long-term damage.
When Should You See a Doctor?
You should see a doctor if you experience persistent pain and swelling in the back of your heel that does not improve with rest. If the pain becomes severe or if you suspect a tendon rupture, seeking medical attention is crucial. A physical exam and imaging tests, like an MRI, can help diagnose the extent of the injury and guide treatment options. Early consultation with a healthcare professional can prevent further complications and aid in recovery.
What Causes Achilles Tendinitis?
Anatomy of the Achilles Tendon
The Achilles tendon is the largest and strongest tendon in the body, connecting the calf muscles to the heel bone. It plays a critical role in walking, running, and jumping by allowing the foot and ankle to move efficiently. When the tendon is subjected to excessive stress or repetitive strain, it can become inflamed, leading to Achilles tendinitis. Understanding the anatomy of the Achilles tendon helps in identifying how injuries can occur and how they can be prevented.
Common Risk Factors
Several risk factors can contribute to the development of Achilles tendinitis. These include overuse, improper footwear, sudden increases in physical activity, and biomechanical issues such as flat feet or tight calf muscles. Age and certain medical conditions, like obesity and diabetes, can also increase the risk. Recognizing these factors and addressing them can help reduce the likelihood of developing this painful condition.
How Does Overuse Lead to Tendinitis?
Overuse is a primary cause of Achilles tendinitis, often resulting from repetitive stress on the tendon without adequate rest. This overuse injury is common in athletes who train intensively without allowing time for recovery. The constant strain can lead to micro-tears in the tendon, causing inflammation and pain. Understanding how overuse contributes to tendinitis is important for developing effective prevention and treatment strategies.
Can Other Medical Conditions Contribute?
Yes, other medical conditions can contribute to the development of Achilles tendinitis. Conditions such as arthritis, obesity, and certain genetic predispositions can increase the risk of tendon inflammation. These conditions can affect the overall health of the tendon, making it more susceptible to injury. Addressing underlying medical issues is an important part of a comprehensive treatment plan for Achilles tendinitis.
Diagnosing Achilles Tendinitis
How is Achilles Tendinitis Diagnosed?
Diagnosing Achilles tendinitis typically involves a thorough physical exam, during which a doctor will assess the range of motion, pain, and swelling in the affected area. They may also inquire about the patient’s activity level and recent changes in exercise routines. This initial assessment helps in determining the severity of the condition and the appropriate course of treatment.
What Tests Are Used?
In addition to a physical exam, imaging tests such as an MRI or ultrasound may be used to evaluate the condition of the Achilles tendon. These tests can provide detailed images of the tendon, helping to identify tears or inflammation. Imaging is especially useful for distinguishing between different types of Achilles tendinitis and for planning surgical interventions if necessary.
What Can You Expect During a Doctor’s Visit?
During a doctor’s visit for Achilles tendinitis, patients can expect a comprehensive evaluation that includes a review of their medical history and a physical exam. The doctor may perform tests to assess the flexibility and strength of the calf muscles and Achilles tendon. In some cases, further imaging tests might be ordered to get a clearer picture of the injury. This thorough evaluation helps in forming an effective treatment plan.
Treatment Options for Achilles Tendinitis
Non-Surgical Treatments
For most cases of Achilles tendinitis, nonsurgical treatment options are highly effective. These may include rest, ice application, and over-the-counter pain relievers to reduce inflammation and pain. Physical therapy is often recommended to strengthen the calf muscles and improve flexibility. A physical therapist can guide patients through specific exercises designed to support recovery. Also, you can use our very own HEM Ankle Rehab system, which has shown great results.
When is Surgery Necessary?
Surgery may be necessary for severe cases of Achilles tendinitis, particularly if there is a tendon rupture or if nonsurgical treatments have failed. Surgical options vary depending on the extent of the injury and can range from removing damaged tissue to repairing a torn tendon. Surgery is typically considered a last resort and is followed by a comprehensive rehabilitation program to ensure proper healing.
How Long is the Recovery Process?
The recovery process for Achilles tendinitis varies depending on the severity of the condition and the treatment approach. Non-surgical treatments may lead to improvement within a few weeks, while surgical recovery can take several months. Adhering to a rehabilitation program that includes strengthening exercises and gradual return to activity is crucial for a successful recovery.
Preventing Achilles Tendinitis
Can Lifestyle Changes Help?
Lifestyle changes can significantly help in preventing Achilles tendinitis. Maintaining a healthy weight, wearing supportive footwear, and incorporating rest days into exercise routines are beneficial strategies. Gradually increasing the intensity of physical activities can also reduce the risk of overuse injuries. These simple modifications can have a profound impact on tendon health.
What Exercises Strengthen the Achilles Tendon?
Strengthening exercises for the Achilles tendon include calf raises, heel dips, and resistance band exercises. These exercises help to improve the strength and flexibility of the calf muscles and Achilles tendon, reducing the risk of injury. A physical therapist can provide guidance on proper technique and progression to ensure safety and effectiveness.
How Important is Proper Footwear?
Proper footwear is crucial in preventing Achilles tendinitis. Shoes that provide adequate support and cushioning can help absorb shock and reduce stress on the Achilles tendon. It’s important to choose footwear that is appropriate for the specific activity, whether it’s running, walking, or playing sports. Regularly checking and replacing worn-out shoes can also help prevent injuries.
FAQ
Can Achilles tendonitis heal itself?
In many cases, Achilles tendonitis can heal itself with proper rest and care. Reducing activity, applying ice, and using over-the-counter pain medication can facilitate healing. However, if symptoms persist or worsen, it’s important to seek medical advice to prevent further complications.
What are 2 signs of Achilles tendonitis?
Two common signs of Achilles tendonitis are pain in the back of the heel and swelling around the Achilles tendon area. These symptoms can be more pronounced during or after physical activities and may improve with rest.
Can you walk on Achilles tendonitis?
Walking on Achilles tendonitis is possible, but it may cause discomfort or pain. It’s important to limit activities that exacerbate symptoms and allow time for the tendon to heal. Supportive footwear and orthotics can help alleviate pain when walking.
What is the best way to treat Achilles tendonitis?
The best way to treat Achilles tendonitis involves a combination of rest, ice application, physical therapy, and gradual return to activity. Strengthening exercises and proper footwear can aid in recovery and prevent future occurrences. In severe cases, medical intervention may be necessary.
Conclusion
Key Takeaways
Achilles tendinitis is a common condition that affects the Achilles tendon, causing pain and swelling in the back of the heel. Understanding the symptoms, risk factors, and treatment options is essential for effective management. Early intervention, lifestyle changes, and appropriate treatment can prevent complications and promote recovery. Proper footwear, strengthening exercises, and gradual activity progression are key strategies in preventing Achilles tendinitis. If symptoms persist, consulting with a healthcare professional is crucial for a tailored treatment plan.
Pay once. Get lifetime access.
30 day money back guarantee
15 YEARS. 100K HEALED.
Once I started HEM, the swelling and bruising subsided significantly and on the 4th day, I was walking comfortably again. I was shocked!
– Erikka Fernando
Thank you so much! It’s pretty amazing that I am doing as much as I am after a severe sprained ankle! Thanks for your support!!!
– Laurie Prindle
From the desk of Scott Malin, NASM-CPT
Creator, HEM Ankle Rehab
March 27, 2025
If you want to heal your ankle fully & fast…
And get back to doing what you love PAIN-FREE, without the fear of re-injury…
This will be the most important thing you ever do for yourself.
Here’s why:
My name is Scott Malin and fifteen years ago, I had to give up what I love… playing basketball. It literally crushed me to give it up!!
But, I had sprained my ankles so many times that I could no longer play.
Every time it happened, I used R.I.C.E. (rest, ice elevation, compression), but my ankles took months to heal and just kept getting weaker and more painful.
I tried everything, including ankle braces, but they made my ankles even weaker and then my knees started hurting too!
When I sprained my ankle one last time and had to crawl off the court, I knew I was done.
That night, I sat in my apartment and cried.
I was in my early thirties and thought I had to give up what I loved for the rest of my life.
But, I had no other option…
My ankles were just way too weak, stiff and unstable and painkillers/ice did nothing anymore.
As I lay in bed, staring up at the ceiling, I remembered back to when I trained with a clinician for the National Academy of Sports Medicine and Soft Tissue Therapist for the Los Angeles Clippers.
I also thought about a revolutionary Naturopath that taught me so much about healing the body naturally.
Then, I came up with a crazy idea…
It instantly improved how my ankle felt.
And the more I did it, the better my ankle got.
By day 6, my ankle was 100% pain-free and felt stronger and more stable than BEFORE I got injured.
The best part… I PLAYED BASKETBALL AGAIN, BUT THERE WAS NO PAIN!!
Afterward, I cried again, but they were tears of joy!!
When I told them what I did, my basketball buddies laughed and said I was crazy.
They called me a “dreamer”.
But, I didn’t care.
Because I had nothing to lose and everything to gain.
I threw my ankle braces away.
After months of late nights, early mornings, and lots of trial and error…
I created a complete, at-home healing system with incredibly reliable results:
- Heals new ankle injuries including ANY type and grade of ankle sprain.
- Heals old ankle injuries that never fully healed.
- Heals weak and unstable ankles.
- Even heals most Achilles, calf and foot injuries!
Since I was a fitness trainer, I was able to help all my clients (celebrities and athletes) whenever they got injured (which happened a lot!).
I was even on the news a few times!!!
The response from my clients was so overwhelming that a few of them eventually convinced me to make it available to everyone.
And even though it is incredibly complete, I always wanted to keep it SUPER simple and easy to do.
So, just follow along with me on any device and that’s it!
You get instant access to all the videos, which are short and focused on quickly giving you the information you need.
I will show you the absolute BEST rehab techniques, exercises, stretches, activations, holistic techniques, prehab techniques, etc….
These are techniques you will NOT find online anywhere else.
You will learn the perfect form for everything to get the best possible results.
It has taken many years of incredibly hard and dedicated work, but I am so humbled that over 100,000 people have healed themselves fully and fast with my program.
If you don’t believe me, please, check out all the reviews, including video testimonials, before and after pictures, etc. from people of all ages.
And listen, I know you’re probably still skeptical. That’s totally fair…
That’s why we have a very simple, no hassle, 30 day money back guarantee, so it’s completely risk-free to give it a try right now.
I created this program, because I don’t want others to go through all the pain and misery that I did!!
I don’t want anyone else to give up what they love…
Life is too short!!!
And now, there’s an easy way you can heal yourself and get back to your life.
I wish you all the best and thank you!!
Pay once. Get lifetime access.
30 day money back guarantee
Pay once. Get lifetime access.
30 day money back guarantee
15 YEARS. 100K HEALED.
Once I started HEM, the swelling and bruising subsided significantly and on the 4th day, I was walking comfortably again. I was shocked!
– Erikka Fernando
Thank you so much! It’s pretty amazing that I am doing as much as I am after a severe sprained ankle! Thanks for your support!!!
– Laurie Prindle
From the desk of Scott Malin, NASM-CPT
Creator, HEM Ankle Rehab
March 27, 2025
If you want to heal your ankle fully & fast…
And get back to doing what you love PAIN-FREE, without the fear of re-injury…
This will be the most important thing you ever do for yourself.
Here’s why:
My name is Scott Malin and fifteen years ago, I had to give up what I love… playing basketball. It literally crushed me to give it up!!
But, I had sprained my ankles so many times that I could no longer play.
Every time it happened, I used R.I.C.E. (rest, ice elevation, compression), but my ankles took months to heal and just kept getting weaker and more painful.
I tried everything, including ankle braces, but they made my ankles even weaker and then my knees started hurting too!
When I sprained my ankle one last time and had to crawl off the court, I knew I was done.
That night, I sat in my apartment and cried.
I was in my early thirties and thought I had to give up what I loved for the rest of my life.
But, I had no other option…
My ankles were just way too weak, stiff and unstable and painkillers/ice did nothing anymore.
As I lay in bed, staring up at the ceiling, I remembered back to when I trained with a clinician for the National Academy of Sports Medicine and Soft Tissue Therapist for the Los Angeles Clippers.
I also thought about a revolutionary Naturopath that taught me so much about healing the body naturally.
Then, I came up with a crazy idea…
It instantly improved how my ankle felt.
And the more I did it, the better my ankle got.
By day 6, my ankle was 100% pain-free and felt stronger and more stable than BEFORE I got injured.
The best part… I PLAYED BASKETBALL AGAIN, BUT THERE WAS NO PAIN!!
Afterward, I cried again, but they were tears of joy!!
When I told them what I did, my basketball buddies laughed and said I was crazy.
They called me a “dreamer”.
But, I didn’t care.
Because I had nothing to lose and everything to gain.
I threw my ankle braces away.
After months of late nights, early mornings, and lots of trial and error…
I created a complete, at-home healing system with incredibly reliable results:
- Heals new ankle injuries including ANY type and grade of ankle sprain.
- Heals old ankle injuries that never fully healed.
- Heals weak and unstable ankles.
- Even heals most Achilles, calf and foot injuries!
Since I was a fitness trainer, I was able to help all my clients (celebrities and athletes) whenever they got injured (which happened a lot!).
I was even on the news a few times!!!
The response from my clients was so overwhelming that a few of them eventually convinced me to make it available to everyone.
And even though it is incredibly complete, I always wanted to keep it SUPER simple and easy to do.
So, just follow along with me on any device and that’s it!
You get instant access to all the videos, which are short and focused on quickly giving you the information you need.
I will show you the absolute BEST rehab techniques, exercises, stretches, activations, holistic techniques, prehab techniques, etc….
These are techniques you will NOT find online anywhere else.
You will learn the perfect form for everything to get the best possible results.
It has taken many years of incredibly hard and dedicated work, but I am so humbled that over 100,000 people have healed themselves fully and fast with my program.
If you don’t believe me, please, check out all the reviews, including video testimonials, before and after pictures, etc. from people of all ages.
And listen, I know you’re probably still skeptical. That’s totally fair…
That’s why we have a very simple, no hassle, 30 day money back guarantee, so it’s completely risk-free to give it a try right now.
I created this program, because I don’t want others to go through all the pain and misery that I did!!
I don’t want anyone else to give up what they love…
Life is too short!!!
And now, there’s an easy way you can heal yourself and get back to your life.
I wish you all the best and thank you!!
Pay once. Get lifetime access.
30 day money back guarantee
REAL PEOPLE, REAL RESULTS
Just got your videos for the holistic rehab the other day. It has already helped and I am so grateful as I know Drs want to cut you open and ask questions later. My left ankle is very badly sprained, completely black and purple and swollen half way up my calf. I am an athlete and have zero intentions of being cut on now or in the future! It was a major eversion off a curb and I just want it to get back to normal. Thanks so much for putting this HEM ankle rehab together, it's a godsend! Have a beautiful day.
Warm regards,
Faith Washington BSPharm, RPh, CSCS, CPT
Hey there,
I literally purchased this program about 20 minutes ago, and now having gotten partially through the videos... The content is already blowing my mind and I feel like this will be information I'll carry with me the rest of my life... Thank you for this info! Clearly you are a master of PT.
Hello Mr. Malin,
I want to thank you for this website. In the end of november, I sprained my ankle and my doctor said that there is an avulsion fracture in my ankle(ATFL). I had really hard times after this incident. When I was looking for how to heal fast, I saw your website. I tried to do as much as different exercises that you showed. Now I face some difficulties during my daily life due to my foot but swelling is decreasing everyday thanks to exercises. Especially, the video about how to activate ankle is very beneficial for me.
Thanks for your support both mentally and physically.
Sincerely,
Orhun Oktar, Electrical and Electronics Engineer
Your program is great. I actually broke one ankle and sprained the other. I just got the cast off and will begin rehab on that ankle now.
I bought your Hem Ankle program in 2018 and used it very successfully with THREE ankle injuries. I am also interested to buy the programme for knees etc.
Pay once. Get lifetime access.
30 day money back guarantee
REAL PEOPLE, REAL RESULTS
Just got your videos for the holistic rehab the other day. It has already helped and I am so grateful as I know Drs want to cut you open and ask questions later. My left ankle is very badly sprained, completely black and purple and swollen half way up my calf. I am an athlete and have zero intentions of being cut on now or in the future! It was a major eversion off a curb and I just want it to get back to normal. Thanks so much for putting this HEM ankle rehab together, it's a godsend! Have a beautiful day.
Warm regards,
Faith Washington BSPharm, RPh, CSCS, CPT
Hey there,
I literally purchased this program about 20 minutes ago, and now having gotten partially through the videos... The content is already blowing my mind and I feel like this will be information I'll carry with me the rest of my life... Thank you for this info! Clearly you are a master of PT.
Hello Mr. Malin,
I want to thank you for this website. In the end of november, I sprained my ankle and my doctor said that there is an avulsion fracture in my ankle(ATFL). I had really hard times after this incident. When I was looking for how to heal fast, I saw your website. I tried to do as much as different exercises that you showed. Now I face some difficulties during my daily life due to my foot but swelling is decreasing everyday thanks to exercises. Especially, the video about how to activate ankle is very beneficial for me.
Thanks for your support both mentally and physically.
Sincerely,
Orhun Oktar, Electrical and Electronics Engineer
Your program is great. I actually broke one ankle and sprained the other. I just got the cast off and will begin rehab on that ankle now.
I bought your Hem Ankle program in 2018 and used it very successfully with THREE ankle injuries. I am also interested to buy the programme for knees etc.
Pay once. Get lifetime access.
30 day money back guarantee
Pay once. Get lifetime access.
30 day money back guarantee
15 YEARS. 100K HEALED.
Once I started HEM, the swelling and bruising subsided significantly and on the 4th day, I was walking comfortably again. I was shocked!
– Erikka Fernando
Thank you so much! It’s pretty amazing that I am doing as much as I am after a severe sprained ankle! Thanks for your support!!!
– Laurie Prindle
From the desk of Scott Malin, NASM-CPT
Creator, HEM Ankle Rehab
March 27, 2025
If you want to heal your ankle fully & fast…
And get back to doing what you love PAIN-FREE, without the fear of re-injury…
This will be the most important thing you ever do for yourself.
Here’s why:
My name is Scott Malin and fifteen years ago, I had to give up what I love… playing basketball. It literally crushed me to give it up!!
But, I had sprained my ankles so many times that I could no longer play.
Every time it happened, I used R.I.C.E. (rest, ice elevation, compression), but my ankles took months to heal and just kept getting weaker and more painful.
I tried everything, including ankle braces, but they made my ankles even weaker and then my knees started hurting too!
When I sprained my ankle one last time and had to crawl off the court, I knew I was done.
That night, I sat in my apartment and cried.
I was in my early thirties and thought I had to give up what I loved for the rest of my life.
But, I had no other option…
My ankles were just way too weak, stiff and unstable and painkillers/ice did nothing anymore.
As I lay in bed, staring up at the ceiling, I remembered back to when I trained with a clinician for the National Academy of Sports Medicine and Soft Tissue Therapist for the Los Angeles Clippers.
I also thought about a revolutionary Naturopath that taught me so much about healing the body naturally.
Then, I came up with a crazy idea…
It instantly improved how my ankle felt.
And the more I did it, the better my ankle got.
By day 6, my ankle was 100% pain-free and felt stronger and more stable than BEFORE I got injured.
The best part… I PLAYED BASKETBALL AGAIN, BUT THERE WAS NO PAIN!!
Afterward, I cried again, but they were tears of joy!!
When I told them what I did, my basketball buddies laughed and said I was crazy.
They called me a “dreamer”.
But, I didn’t care.
Because I had nothing to lose and everything to gain.
I threw my ankle braces away.
After months of late nights, early mornings, and lots of trial and error…
I created a complete, at-home healing system with incredibly reliable results:
- Heals new ankle injuries including ANY type and grade of ankle sprain.
- Heals old ankle injuries that never fully healed.
- Heals weak and unstable ankles.
- Even heals most Achilles, calf and foot injuries!
Since I was a fitness trainer, I was able to help all my clients (celebrities and athletes) whenever they got injured (which happened a lot!).
I was even on the news a few times!!!
The response from my clients was so overwhelming that a few of them eventually convinced me to make it available to everyone.
And even though it is incredibly complete, I always wanted to keep it SUPER simple and easy to do.
So, just follow along with me on any device and that’s it!
You get instant access to all the videos, which are short and focused on quickly giving you the information you need.
I will show you the absolute BEST rehab techniques, exercises, stretches, activations, holistic techniques, prehab techniques, etc….
These are techniques you will NOT find online anywhere else.
You will learn the perfect form for everything to get the best possible results.
It has taken many years of incredibly hard and dedicated work, but I am so humbled that over 100,000 people have healed themselves fully and fast with my program.
If you don’t believe me, please, check out all the reviews, including video testimonials, before and after pictures, etc. from people of all ages.
And listen, I know you’re probably still skeptical. That’s totally fair…
That’s why we have a very simple, no hassle, 30 day money back guarantee, so it’s completely risk-free to give it a try right now.
I created this program, because I don’t want others to go through all the pain and misery that I did!!
I don’t want anyone else to give up what they love…
Life is too short!!!
And now, there’s an easy way you can heal yourself and get back to your life.
I wish you all the best and thank you!!
Pay once. Get lifetime access.
30 day money back guarantee
REAL PEOPLE,
REAL RESULTS
Just got your videos for the holistic rehab the other day. It has already helped and I am so grateful as I know Drs want to cut you open and ask questions later. My left ankle is very badly sprained, completely black and purple and swollen half way up my calf. I am an athlete and have zero intentions of being cut on now or in the future! It was a major eversion off a curb and I just want it to get back to normal. Thanks so much for putting this HEM ankle rehab together, it's a godsend! Have a beautiful day.
Warm regards,
Faith Washington BSPharm, RPh, CSCS, CPT
Hey there,
I literally purchased this program about 20 minutes ago, and now having gotten partially through the videos... The content is already blowing my mind and I feel like this will be information I'll carry with me the rest of my life... Thank you for this info! Clearly you are a master of PT.
Hello Mr. Malin,
I want to thank you for this website. In the end of november, I sprained my ankle and my doctor said that there is an avulsion fracture in my ankle(ATFL). I had really hard times after this incident. When I was looking for how to heal fast, I saw your website. I tried to do as much as different exercises that you showed. Now I face some difficulties during my daily life due to my foot but swelling is decreasing everyday thanks to exercises. Especially, the video about how to activate ankle is very beneficial for me.
Thanks for your support both mentally and physically.
Sincerely,
Orhun Oktar, Electrical and Electronics Engineer
Your program is great. I actually broke one ankle and sprained the other. I just got the cast off and will begin rehab on that ankle now.
I bought your Hem Ankle program in 2018 and used it very successfully with THREE ankle injuries. I am also interested to buy the programme for knees etc.
Pay once. Get lifetime access.
30 day money back guarantee
