How long should I wait before deciding shockwave therapy didn't work?

Most providers recommend waiting at least 12-16 weeks after completing your final session before concluding that ESWT was ineffective. The treatment triggers a biological healing process that continues long after sessions end. Some patients don't notice meaningful improvement until 3-4 months post-treatment. Judging results too early is one of the most common mistakes.

Should I try a second round of shockwave therapy if the first didn't work?

It depends on why the first round produced poor results. If the diagnosis was confirmed, the protocol was appropriate, and you had partial improvement, a second course may help. If there was zero improvement, repeating the same approach is unlikely to produce different results. A reassessment with imaging and possibly a second opinion is a better next step.

Can other medications interfere with shockwave therapy results?

Yes. Regular use of NSAIDs (ibuprofen, naproxen) during treatment may reduce effectiveness by suppressing the inflammatory healing response. Fluoroquinolone antibiotics (like Cipro) can weaken tendons and impair healing. Corticosteroid use -- either oral or recent injections at the treatment site -- may also interfere with outcomes. Tell your provider about all medications you take before starting ESWT.

Shockwave Therapy Not Working? Here's What Might Be Going On

You completed your shockwave therapy sessions, waited the recommended weeks for results, and your pain is still there. It’s frustrating. You invested time and money into a treatment that was supposed to help, and now you’re wondering if it was all a waste.

You’re not alone. While extracorporeal shockwave therapy (ESWT) has strong clinical evidence for many conditions, it doesn’t work for everyone. Studies typically report success rates of 60-80% depending on the condition – which means 20-40% of patients don’t get the results they were hoping for. The question is: why?

Here are the most common reasons shockwave therapy fails, and what you can do about each one.

Reason 1: The Diagnosis Was Wrong

This is the most overlooked and arguably most important reason. ESWT treats a specific category of problems – primarily chronic tendinopathies (damaged tendons) and certain calcific conditions. If your actual diagnosis is something else, no amount of shockwave therapy will fix it.

Common diagnostic mix-ups:

Nerve entrapment misdiagnosed as tendinopathy. Tarsal tunnel syndrome can mimic plantar fasciitis. Posterior interosseous nerve syndrome can mimic tennis elbow. Shockwave therapy doesn’t treat nerve compression.
Stress fractures misdiagnosed as soft tissue injury. A stress fracture in the heel bone can feel exactly like plantar fasciitis. An MRI (not just X-ray) can distinguish between the two.
Joint pathology mistaken for tendon problems. Hip osteoarthritis can present with lateral hip pain similar to gluteal tendinopathy. Calcific shoulder tendinitis can coexist with a rotator cuff tear that’s the real pain driver.
Referred pain from the spine. Lumbar disc issues can cause heel pain, lateral hip pain, or shoulder symptoms that look like local tendon problems.

What to do: If ESWT didn’t help, ask your provider whether advanced imaging (MRI, diagnostic ultrasound) or additional testing could reveal a different diagnosis. A nerve conduction study, for example, can rule out entrapment neuropathy.

Reason 2: The Protocol Wasn’t Right

Not all shockwave therapy is created equal. The clinical outcomes depend heavily on getting the right dose to the right tissue. Several protocol factors can lead to undertreatment:

Energy levels too low. Some providers use conservative energy settings to minimize patient discomfort. While this improves the treatment experience, it may deliver insufficient stimulus to trigger the biological healing response. Research suggests that higher energy flux density (within safe limits) correlates with better outcomes for certain conditions (Gerdesmeyer et al., 2008, American Journal of Sports Medicine).

Too few sessions. The evidence-based number varies by condition, but most musculoskeletal protocols call for 3-6 sessions. If you had only 1-2 sessions, you may not have received an adequate treatment course. See our breakdown of how many sessions are typically needed for your condition.

Wrong device type. Deep conditions (like insertional Achilles tendinopathy or calcific shoulder deposits) may respond better to focused ESWT, which can penetrate 4-12 cm. Radial pressure wave devices, while effective for many conditions, only penetrate 0-3.5 cm. If your provider used a radial device for a deep-tissue condition, the energy may not have reached the target.

Poor localization. The device needs to be aimed precisely at the damaged tissue. Without imaging guidance (ultrasound-guided treatment) or careful palpation, the energy may have been delivered to the wrong spot.

Reason 3: You’re Judging Results Too Early

This is extremely common. Patients complete their sessions and expect to feel better the following week. But ESWT doesn’t work like a cortisone injection that provides immediate pain relief.

Shockwave therapy initiates a biological healing process that unfolds over weeks to months:

Weeks 1-2: Inflammatory response (you may actually feel worse temporarily)
Weeks 3-6: New blood vessel formation and early tissue remodeling
Weeks 6-12: Collagen reorganization and progressive strengthening
Weeks 12-16: Full treatment effect in many patients

If you finished your sessions two or three weeks ago and feel no different, that’s expected. The standard recommendation is to wait at least 12-16 weeks after your final session before concluding the treatment didn’t work. A 2015 systematic review in the British Journal of Sports Medicine confirmed that ESWT outcomes continued to improve between 12-week and 6-month follow-up assessments (Schmitz et al., 2015).

Reason 4: Something Is Working Against Your Healing

Even with the right diagnosis and the right protocol, certain factors can sabotage your recovery:

Continued overloading. If you kept running on a damaged Achilles tendon or kept playing tennis with lateral epicondylitis throughout your treatment course, the ongoing tissue damage may have outpaced the healing response.
Systemic health conditions. Diabetes, autoimmune disorders, and peripheral vascular disease can all impair tissue healing and reduce ESWT effectiveness.
Medications. Regular NSAID use during treatment may suppress the inflammatory response ESWT is designed to trigger. Fluoroquinolone antibiotics are known to damage tendons. Recent corticosteroid injections at the treatment site can weaken tissue.
Smoking. Nicotine impairs blood vessel function and tissue healing – both of which are central to how ESWT works.
Severe or longstanding degeneration. Tendons that have been damaged for years with extensive degeneration may have less capacity to respond to any regenerative treatment.

What to Do Next

If shockwave therapy genuinely didn’t work for you, here are constructive next steps:

Get reimaged. An updated MRI or diagnostic ultrasound can confirm (or change) your diagnosis and show the current state of the tissue.
Seek a second opinion. Another provider may identify a diagnostic error, recommend a different protocol, or suggest a different treatment approach.
Explore alternatives. Platelet-rich plasma (PRP) injections, structured rehabilitation programs, or other treatment approaches may be appropriate. For some conditions, surgery remains an option when conservative and non-invasive treatments have failed.
Address confounding factors. If you haven’t modified activity, managed systemic conditions, or adjusted medications, these changes alone may improve your outcome.

Many qualified providers offer reassessment evaluations and second opinions on failed ESWT treatment.

The Bottom Line

Shockwave therapy doesn’t work for everyone, and that’s an honest reality. But “not working” has many possible explanations – wrong diagnosis, inadequate protocol, premature judgment, or confounding health factors. Before writing off ESWT entirely, make sure you’ve waited a full 12-16 weeks post-treatment, confirmed your diagnosis with imaging, and addressed any factors that may have undermined your healing. The answer to “why didn’t it work?” determines what to try next.

Explore Shockwave Therapy Condition Guides

References

Gerdesmeyer L, Frey C, Vester J, et al. Radial extracorporeal shock wave therapy is safe and effective in the treatment of chronic recalcitrant plantar fasciitis. Am J Sports Med. 2008;36(11):2100-2109. PubMed
Schmitz C, Császár NB, Milz S, et al. Efficacy and safety of extracorporeal shock wave therapy for orthopedic conditions: a systematic review on studies listed in the PEDro database. Br J Sports Med. 2015;49(9):590-595. PubMed

Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice. Shockwave therapy outcomes vary by individual and condition. Consult a qualified healthcare provider to determine if shockwave therapy is appropriate for your situation.