Achilles Tendonitis Treatment: Causes, Options and Regenerative Care in Bangkok

What is Achilles tendonitis?

The Achilles tendon connects the calf muscles to the heel bone and is the strongest tendon in the body. Achilles tendonitis, now more often called Achilles tendinopathy, is pain and reduced function caused by overload of the tendon. Long-standing cases show degenerative changes in the tendon rather than classic inflammation.

There are two main types:

• Mid-portion tendinopathy: pain and thickening 2 to 6 cm above the heel
• Insertional tendinopathy: pain where the tendon attaches to the heel, sometimes with bony changes or bursitis

Typical symptoms include:

• Pain and stiffness in the back of the heel or lower calf, worst in the morning
• Pain at the start of exercise that may ease, then return afterwards
• A thickened or tender tendon
• Reduced ability to push off, hop or run

The NHS tendonitis page, the NHS heel pain page and the Mayo Clinic Achilles tendinitis guide give more background. A sudden snap or feeling of being kicked in the heel may be a tendon rupture, which needs urgent assessment.

Causes and risk factors

• Sudden increases in running distance, speed or hill training
• Return to sport after a break
• Tight or weak calf muscles
• Middle age, as tendons become less resilient
• Excess body weight, diabetes and high cholesterol
• Some medicines, notably fluoroquinolone antibiotics (such as ciprofloxacin), which raise tendon injury risk
• Inflammatory conditions such as spondyloarthritis

Diagnosis: ultrasound and MRI

Diagnosis is usually based on symptoms and examination: tenderness, thickening and pain with loading tests such as single-leg heel raises. Ultrasound shows tendon thickening, degenerative changes, new blood vessel growth and partial tears, and is used to guide injections. MRI is useful when the diagnosis is unclear, a partial tear is suspected, or before considering surgery or injections. X-rays can show bony spurs or calcification at the insertion.

If pain has persisted for several months despite exercise, you can send your MRI or ultrasound for a doctor review to confirm what is happening in the tendon.

Conventional Achilles tendonitis treatment

• Progressive loading exercises. Eccentric heel drops (Alfredson protocol) or heavy slow resistance training are the mainstay of physical therapy for Achilles tendonitis, usually for at least 12 weeks.
• Load management. Reduce running volume, hills and speed work temporarily, rather than stopping all activity.
• Footwear and heel lifts. Can reduce tendon strain, especially for insertional pain.
• Pain relief. Ice and short-term anti-inflammatories for flare-ups.
• Shockwave therapy (ESWT). Evidence supports it as an option for chronic cases that have not responded to exercise.
• Steroid injections. Generally avoided into or around the Achilles because of the risk of tendon rupture.
• Surgery. Debridement or tendon procedures for persistent, disabling pain after six months or more of good non-surgical care.

Regenerative options: what the evidence says

• PRP therapy: in a well-known randomised trial by de Vos and colleagues (JAMA, 2010), PRP injection plus exercise was no better than saline injection plus exercise for chronic mid-portion Achilles tendinopathy. Later placebo-controlled trials have reported similar findings. See PubMed trials of PRP for Achilles tendinopathy.
• Stem cell therapy: small early studies using cultured cells or bone marrow concentrate for tendinopathy report improvement in some patients, but there are few controlled trials. See PubMed research on stem cells for Achilles tendinopathy.
• Exosome therapy: tendon healing has been studied in animal models; human evidence is very limited.

Because the evidence for injections is weak, any regenerative treatment for the Achilles should be combined with, not replace, a loading program. Stem cell products for tendinopathy are not approved in the US, UK or Australia; the US FDA warns about unapproved stem cell therapies.

Comparing Achilles tendonitis treatment options

Option	Best for	Evidence	Timeframe	Main downside
Loading exercise program	All tendinopathy	Strong	12+ weeks	Requires consistency
Load management, heel lifts	Flares, insertional pain	Moderate	Weeks	Temporary activity change
Shockwave therapy	Chronic cases	Moderate	Months	Several sessions
Steroid injection	Rarely used	Short term	Weeks	Rupture risk
PRP injection	Selected chronic cases	Trials show no clear benefit vs placebo	Months	Uncertain value
Stem cell injection	Experimental	Early, small studies	Months	Unproven
Surgery	Persistent, disabling pain	Moderate	6–12 months	Surgical risks, long rehab

Self-help for Achilles tendonitis

• Do your tendon-loading exercises consistently, even when pain eases
• Use the next-morning pain test: if stiffness is worse the next day, reduce load
• Avoid barefoot walking and flat shoes early on if they aggravate pain
• Cross-train with cycling or swimming
• Build running back gradually, avoiding hills and sprints at first

Who may be a candidate for regenerative treatment?

• Chronic Achilles tendinopathy for more than three to six months despite a proper loading program
• Imaging confirming tendinopathy or a partial tear
• People wishing to explore options before surgery, accepting that evidence is limited

Who should not have regenerative treatment

• Complete Achilles tendon rupture, which needs urgent orthopaedic care
• Heel pain from another cause, such as inflammatory arthritis or nerve problems
• Active infection, bleeding disorders, active cancer or pregnancy
• Recent fluoroquinolone antibiotic use, until reviewed by a doctor

Risks and side effects

Tendon injections can cause pain and stiffness for several days. Rare risks include infection, bleeding, nerve irritation and tendon weakening or rupture, especially if load is increased too quickly afterwards. Cell-based treatments using your own fat or marrow add harvest-site soreness. Cells used in our programmes are prepared in ISO 9001:2015-certified partner laboratories.

What an Achilles treatment trip to Bangkok looks like

1. Before travel: send your ultrasound or MRI and reports on WhatsApp. A doctor advises whether a regenerative program is reasonable.
2. Day 1: consultation, examination and ultrasound assessment of the tendon.
3. Day 2: ultrasound-guided procedure according to the protocol.
4. Following days: review and a staged loading program to follow at home.

Programmes usually involve around 3 to 5 days in Bangkok. Patients travel from Australia, the UK, the US and Canada. See how it works. No outcome can be guaranteed.

Recovery and aftercare at home

• Protect the tendon for the first days; a walking boot or heel lift is sometimes advised
• Avoid running, jumping and anti-inflammatory medicines for the period recommended
• Restart a graded loading program, guided by a physiotherapist
• Keep the medical team updated on WhatsApp
• Expect any change to develop gradually over three to six months

Sudden pain with a snapping feeling or inability to push off needs urgent medical care.