If you’ve been dealing with a stubborn tendon injury – plantar fasciitis that won’t budge, tennis elbow that keeps coming back, or a calcified shoulder that makes you wince every time you reach overhead – your physiotherapist or doctor may have mentioned shockwave therapy. It’s become increasingly available in Penang over the past few years, but many people aren’t sure what it involves or whether it’s worth trying. Here’s a straightforward look at how it works, what it treats, and what to expect.
What Is Shockwave Therapy?
Shockwave therapy (formally called extracorporeal shockwave therapy, or ESWT) uses a handheld device to deliver high-energy acoustic pulses to injured tissue. These aren’t electrical shocks – they’re pressure waves, similar in principle to the waves used to break up kidney stones (lithotripsy), though at lower intensities.
There are two main types:
Radial shockwave therapy (rSWT) is the more common type used in physiotherapy clinics. It generates pressure waves that spread outward from the skin surface into the tissue. It’s effective for most tendon and soft tissue conditions and is what you’ll find in most Penang clinics.
Focused shockwave therapy (fSWT) concentrates the energy at a specific depth within the tissue. It penetrates deeper and is used for conditions like calcific tendinitis and non-healing bone fractures. This type is less widely available and usually found in hospital-based physiotherapy departments or specialist sports medicine clinics.
How Does It Work?
The exact mechanisms are still being studied, but shockwave therapy appears to work through several pathways:
Stimulating healing. The acoustic waves create micro-trauma in the tissue, which triggers an inflammatory response. This sounds counterintuitive for an already painful area, but in chronic tendon conditions, the problem is often that the tendon has failed to heal properly. The shockwave essentially restarts the healing process.
Increasing blood flow. The pressure waves stimulate the formation of new blood vessels (angiogenesis) in the treated area. Better blood supply means more oxygen and nutrients for tissue repair. Many chronic tendon problems persist partly because tendons have poor blood supply to begin with.
Breaking down calcification. In conditions like calcific tendinitis of the shoulder, calcium deposits form within the tendon. Shockwave therapy can break these deposits into smaller pieces that the body then reabsorbs.
Pain modulation. Shockwave therapy affects pain signalling in the treated area, reducing sensitivity. Some patients notice immediate pain relief after treatment, though this may be temporary initially.
What Conditions Does It Treat?
Shockwave therapy has the strongest evidence for:
- Plantar fasciitis – chronic heel pain that hasn’t responded to 3-6 months of standard treatment. This is probably the best-studied application of shockwave therapy.
- Calcific tendinitis of the shoulder – calcium deposits causing shoulder pain and restricted movement.
- Tennis elbow (lateral epicondylitis) – persistent outer elbow pain.
- Achilles tendinopathy – pain in the Achilles tendon from overuse or degeneration.
- Patellar tendinopathy (jumper’s knee) – pain below the kneecap, common in sports.
- Greater trochanteric pain syndrome – pain on the outside of the hip.
It’s also used with some evidence for:
- Hamstring tendinopathy
- Shin splints (medial tibial stress syndrome)
- Non-healing bone fractures (delayed union)
- Trigger points in muscles
Shockwave therapy works best for chronic conditions that haven’t responded to conventional treatment (rest, exercises, anti-inflammatories) for at least 3 months. It’s generally not used for acute injuries or inflammation.
What Does a Session Feel Like?
A typical shockwave therapy session takes about 15-20 minutes. Here’s what to expect:
Your physiotherapist applies ultrasound gel to the treatment area, then presses the shockwave applicator against your skin. They’ll activate the device, and you’ll feel rapid tapping or pulsing sensations. It’s uncomfortable – some patients describe it as a strong flicking sensation – but it shouldn’t be unbearable. Your physio will adjust the intensity based on your tolerance.
Most protocols involve 2,000-3,000 pulses per session, delivered at a frequency that your physiotherapist sets based on the condition being treated. Sessions are usually once a week for 3-5 weeks.
You may feel sore after treatment, similar to a deep bruise, for 24-48 hours. This is normal. Avoid anti-inflammatory medication (like ibuprofen) for 48 hours after treatment, as the inflammatory response is part of how shockwave therapy works.
Where to Access Shockwave Therapy in Penang
Shockwave therapy has become more widely available in Penang over recent years. You can find it at:
- Hospital-based physiotherapy departments at Island Hospital, Gleneagles Penang, and Loh Guan Lye Specialists Centre
- Private physiotherapy clinics in George Town, Bayan Lepas, and Butterworth
- Sports medicine clinics
The cost typically ranges from RM150-RM350 per session, depending on the facility and the type of shockwave used.
When choosing a provider, make sure the shockwave therapy is administered by a qualified physiotherapist or doctor who has specific training in the technique. The effectiveness depends significantly on proper application – targeting the right tissue at the right intensity.
Is Shockwave Therapy Right for You?
Shockwave therapy is not a first-line treatment. It works best as part of a broader rehabilitation plan that includes targeted exercises, activity modification, and addressing the underlying causes of your problem.
Consider shockwave therapy if:
- You have a chronic tendon condition that’s lasted more than 3 months
- Standard physiotherapy treatments (exercises, manual therapy) have helped but not fully resolved the problem
- You want to avoid surgical options like corticosteroid injections or tendon surgery
- Your doctor or physiotherapist has recommended it based on your specific condition
Shockwave therapy is generally not suitable if you have a bleeding disorder, are on blood thinners, are pregnant, have a local infection, or have a tumour in the treatment area. It’s also not used over growth plates in children.
What Results to Expect
Research shows that 60-80% of patients with chronic tendon problems experience significant improvement with shockwave therapy combined with exercise rehabilitation. Results aren’t immediate – most people notice progressive improvement over 6-12 weeks after completing their course of treatment.
Some patients feel better after the first or second session. Others feel temporary worsening before improvement. Patience and consistency matter. The shockwave therapy sessions need to be combined with the exercise programme your physiotherapist prescribes – the shockwave creates the conditions for healing, but the exercises build the strength and resilience the tendon needs.
If you have a stubborn tendon problem that hasn’t responded to standard treatment, reach out to us on WhatsApp. We can discuss whether shockwave therapy might be appropriate for your condition and connect you with the right provider in Penang.
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Reviewed by
M. Thurairaj
Registered Physiotherapist