About Achilles Tendinitis
Achilles tendinitis refers to inflammation of the tendon that connects your calf muscle to your heel. It can occur when you increase your running mileage or the intensity of your workouts. If left untreated, Achilles tendinitis can increase your risk of rupturing your Achilles tendon, which may require surgery to repair.
Common symptoms of Achilles tendinitis include dull pain in your lower leg above your heel, swelling along your Achilles tendon, limited range of motion when flexing your foot toward your shin, and a feeling of warmth over the tendon.
The exact cause of Achilles tendinitis is not fully understood, but there are several factors that can increase a person's risk of developing this condition.
Non-modifiable risk factors for Achilles tendinitis cannot be changed or controlled. These include:
- Age: Achilles tendinitis is most commonly seen in individuals between the ages of 30 and 60 years old.
- Sex: While both men and women can develop Achilles tendinitis, it is more commonly seen in men.
- Genetic factors: Certain genetic factors can contribute to the structure of collagen and the balance of tendon maintenance (homeostasis), which may increase the risk of developing Achilles tendinitis.
Modifiable risk factors for Achilles tendinitis can be influenced or changed. These include:
- Overuse: Achilles tendinitis is often considered an overuse injury, meaning it can develop from repetitive strain on the tendon. This can occur from activities such as running or jumping.
- Being overweight: Carrying excess weight puts extra stress on the Achilles tendon, increasing the risk of developing tendinitis.
- Chronic medical conditions: Certain chronic conditions like diabetes, rheumatoid arthritis, or hypercholesterolemia (high cholesterol) can affect the quality of the tendon and increase the risk of Achilles tendinitis.
- Medications: The use of fluoroquinolone antibiotics or statins has been associated with an increased risk of developing Achilles tendinitis.
- Reduced muscle strength and flexibility: Having weak calf muscles or reduced ankle dorsiflexion (the ability to bend your foot upward) can put additional strain on the Achilles tendon and increase the risk of tendinitis.
It's important to note that while these factors may increase a person's risk of developing Achilles tendinitis, they do not guarantee that someone will develop the condition. Additionally, there may be other factors not mentioned here that could also contribute to the development of Achilles tendinitis.
The most common early symptoms of Achilles tendinitis include:
- Dull pain in the lower leg above the heel
- Swelling along the Achilles tendon
- Limited range of motion when flexing the foot toward the shin
- A warm feeling over the tendon
As Achilles tendinitis progresses or becomes more severe, additional symptoms may occur. These can include:
- A sudden sharp pain in the back of the calf muscle that may gradually turn into an ache
- Swelling of the back of the calf and/or heel
- Bruising on the back of the calf and/or heel
- Difficulty walking upstairs, on a slope, or in general
- Difficulty standing on your toes
- Difficulty pushing off with the injured foot
- Tenderness in the back of the lower leg
It's important to note that symptoms can vary depending on the severity and nature of the injury. It's always a good idea to seek medical advice for an accurate diagnosis if you're experiencing any symptoms related to Achilles tendinitis.
To diagnose Achilles tendinitis, doctors typically perform a combination of physical examinations, clinical tests, and imaging procedures. Here are some common procedures:
- Subjective examinations:
- Doctors will ask about symptoms and review the person's medical history.
- Patients commonly report pain 2 to 6 cm above the insertion of the tendon into the calcaneus (heel bone).
- Objective clinical tests:
- Tendon palpation: Doctors will palpate (feel) the area to determine pain. This involves applying pressure to the tendon and checking for localized pain, thickening, or swelling.
- Pain with tendon loading activities: Patients may be asked to perform specific activities, such as single-leg heel raises and hopping, to assess if there is pain in the tendon during these loading activities.
- Painful arc sign: This test involves moving the ankle joint through a range of motion to determine if there is pain at a specific point during movement.
- Royal London Hospital Test: This test is used to assess Achilles tendinopathy by evaluating pain and resistance as they press or move your limbs.
- Imaging procedures:
- X-ray: A doctor may request an X-ray to help make a diagnosis and rule out other musculoskeletal disorders.
- Ultrasound: This imaging technique uses sound waves to create real-time images of the tendon. It can help visualize any abnormalities or inflammation in the Achilles tendon.
- Magnetic resonance imaging (MRI): An MRI scan can provide detailed images of the bones, ligaments, and tendons. It helps doctors assess the severity of Achilles tendinitis and identify any tears or inflammation.
Additional examinations, tests, and procedures may be used to determine the severity of Achilles tendinitis:
- VISA-A questionnaire:
- The Victorian Institute of Sport Assessment (VISA-A) questionnaire is a commonly used outcome measure to monitor Achilles tendinopathy.
- It includes questions about pain, function, and sport activity and is considered a valid and reliable tool for assessing the severity of Achilles tendinopathy or patellar tendinopathy, a condition that causes pain in the tendon connecting the kneecap to the shinbone.
- Psychological factors:
- Psychological factors such as Pain Catastrophizing Scale (PCS), Tampa Scale for Kinesiophobia (TKS), and Painful Experiences Scale (PES) may be measured to understand their impact on Achilles tendinopathy.
- Overall quality of life measures:
- Tools such as SF-12, SF-36, and EQ-5D-5L are often used to measure overall health and quality of life in people with Achilles tendinopathy. These tools evaluate factors like physical and mental well-being, pain, and how the condition affects daily life.
The goals of treatment for Achilles tendinitis are to relieve pain, reduce swelling, and promote healing. The choice of treatment will depend on the severity of the condition and lifestyle/career factors, such as being a professional athlete. There are several types of treatments that can help achieve these goals:
- Rest: Giving the tendon time to heal is crucial. In mild cases, this may mean reducing the intensity of a workout, while severe cases might require complete rest for days or weeks.
- Ice packs: Applying ice packs to the tendon, especially when in pain or after exercising, can help alleviate pain and reduce inflammation. It's recommended to apply ice packs for about 10 minutes at a time with 20-minute breaks in between.
- Elevation: Keeping the foot raised above the level of the heart can help reduce swelling in the tendon.
- Pain relief medication: Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, can be used to reduce both pain and swelling. However, it's important to note that people with asthma, kidney disease, or liver disease should check with a doctor before taking NSAIDs.
- Physical therapy: Physical therapy may be recommended to strengthen the muscles around the tendon and improve flexibility. This can help alleviate stress on the Achilles tendon and promote healing.
- Steroid injections: In some cases, cortisone injections may be used to reduce tendon swelling. However, it's important to note that these injections have been associated with a greater risk of tendon rupture.
- Surgical intervention: In severe cases where conservative treatments fail, surgery may be necessary to repair or remove damaged tissue.
A combination of strategies may be suggested by the doctor to achieve the treatment goals for Achilles tendinitis.
Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation.Side effects can occur. Check with your health care professional or read the information provided with your medication for side effect information.
The natural progression of Achilles tendinitis involves several stages:
- Initial injury: Achilles tendinitis begins with an injury to the collagen fibers in the tendon. This damage can happen due to repetitive strain on the tendon (mechanical stress), inflammation, cell death (apoptosis), or the growth of too many small blood vessels in the tendon (increased vascular ingrowth).
- Inadequate healing: After the initial injury, the body's healing response is launched. However, under various environmental and natural factors, the tendon may experience inadequate or failed healing. Despite this, there may be no symptoms at this stage.
- Symptom manifestation: As micro-damage accumulates in the tendon that triggers the body’s natural response to injury, symptoms start to appear. This includes pain, stiffness, swelling, and thickening of the tendon. The activation of nociceptors (pain receptors) contributes to the pain experienced by individuals with Achilles tendinitis.
Complications that commonly occur with Achilles tendinitis include:
- Achilles tendinosis: If left untreated, Achilles tendinitis can progress to a degenerative condition called Achilles tendinosis. In this condition, the structure of the tendon changes and becomes susceptible to serious damage. Tendinosis is characterized by cellular-level degeneration of the tendon, usually without inflammation.
- Tendon tear: The Achilles tendon may tear due to the impact of chronic inflammation and degeneration in tendinosis. This can cause severe pain and often requires surgery for repair.
It is important to address symptoms of calf/heel injuries and Achilles tendinitis early and taking steps to treat the symptoms before it progresses into more severe complications. It is always recommended to consult with a healthcare professional or doctor before trying any home remedies or over-the-counter medications for Achilles tendinitis. They can provide personalized advice based on an individual's specific condition and medical history.