For tendon pain, a cortisone injection and focused shockwave do opposite jobs. Cortisone is a corticosteroid, a powerful anti-inflammatory that can quiet a flare fast, but it does not rebuild the tendon, and repeated shots are linked in the literature to tendon weakening. Focused electromagnetic shockwave (ESWT) is a needle-free, non-injection treatment that sends acoustic energy into the tendon to stimulate the body’s own repair. So the real choice is short-term inflammatory relief versus working on the structure. Cortisone can have a place. If the goal is to address the tendon itself, a tissue-aimed tool is the match.
If each cortisone shot helps for a shorter stretch than the last, that pattern is the signal: the inflammation is treated, the tendon is not.
Why cortisone keeps fading on the same tendon?
Cortisone treats the inflammation, not the tendon
A cortisone injection delivers a corticosteroid that quiets the chemical signals of pain and swelling. Useful for a hot flare. But most chronic tendon pain is tendinopathy: a degenerated tendon, not a simple inflammation. The steroid does nothing to that tissue, so the pain returns when the effect fades. The alarm is not the fire.
Repeated injections can work against the tendon
One shot is a legitimate tool. The concern is repetition. A systematic review of randomized trials in The Lancet (Coombes, Bisset, and Vicenzino, 2010) found cortisone helped tendinopathy short-term but did worse than other treatments long term. Lab work in the British Journal of Sports Medicine (Dean and colleagues, 2014) described a mechanism of steroid toxicity to tendon cells. As the long-term answer, it can erode the tendon you mean to save.
Focused shockwave aims at repair, with no needle
Focused electromagnetic shockwave (ESWT) is a needle-free, non-injection treatment. A coupling head sends focused acoustic energy through the skin to a defined depth in the tendon, stimulating the body’s own repair response. For chronic plantar fasciitis, a meta-analysis in Foot & Ankle International (Lou and colleagues, 2017) and a trial in The American Journal of Sports Medicine (Gerdesmeyer and colleagues, 2008) both found extracorporeal shockwave effective. Nothing is injected.
Find the actual source, then match the tool
The first step is not another shot. It is finding the actual source of the pain, often with a focused exam, because lasting relief comes from treating the failing structure. That can point to focused shockwave, a reparative injection, or a combination, under our shockwave therapy program, led by Dr. Garg, who founded and directs ASTI and trains other clinicians and physicians on focused shockwave.
Side by side: cortisone and focused shockwave
| Property | Cortisone Injection | Focused Shockwave (ESWT) |
|---|---|---|
| What it does | Suppresses inflammation | Stimulates a tendon repair response |
| Delivery | Injection (needle, medication) | Needle-free, non-injection, nothing placed in the body |
| Effect on the tendon | Does not rebuild it; repeated use linked to tendon weakening | Aims to improve the tissue itself |
| Best matched to | A hot inflammatory flare; short-term calm | Chronic tendinopathy, calcific deposits, plantar fasciitis |
The honest version
Neither tool is right for every tendon. Cortisone earns its place on a hot, inflammatory flare. Focused shockwave earns its place when the tendon itself is the problem and the goal is to work on the structure without a needle. One caveat if you pick shockwave: true focused electromagnetic ESWT is what the tendon evidence is built on. Radial pressure wave is a separate, more superficial modality that ISMST, ASMST, and ASTI classify as distinct.
Before booking shockwave anywhere, ask one question: will my tendon be treated with focused ESWT or with radial? Dynamic Shockwave+ delivers true focused ESWT plus EMTT every session on the Storz gold-standard system, the same equipment Dr. Garg teaches on at ASTI, escalating to High-Dose Dynamic PRP+ when the tendon needs more.
Frequently asked questions
What is the difference between shockwave therapy and a cortisone injection for tendon pain?
They take opposite approaches to a tendon problem. A cortisone injection delivers a corticosteroid, a powerful anti-inflammatory that quiets the chemical signals of pain and swelling, so it can calm a flare quickly. It does not rebuild the tendon, so the underlying tendinopathy is still there once it wears off. Focused shockwave therapy is the other way around. It is a needle-free, non-injection treatment that sends focused acoustic energy into the tendon to stimulate the body’s own repair response, working on the structure rather than only muting the alarm. So the honest framing is short-term inflammatory relief versus an attempt to improve the tendon itself. Cortisone can have a place for a stubborn flare. If the goal is to address the tendon, a treatment aimed at the tissue is the one matched to that goal.
Is shockwave better than cortisone for tendinopathy?
It depends on what you are solving for. Cortisone often wins the first few weeks because it suppresses inflammation fast. The trade-off shows up later: in a systematic review of randomized trials in The Lancet (Coombes, Bisset, and Vicenzino, 2010), corticosteroid injections for tendinopathy gave short-term relief but worse outcomes than other treatments at intermediate and long term. Focused shockwave is slower to build because it is working on the tendon, not just the inflammation, so it tends to hold up better over months. For chronic plantar fasciitis specifically, a meta-analysis in Foot & Ankle International (Lou and colleagues, 2017) found extracorporeal shockwave effective. Neither is right for everyone. The honest answer is to match the tool to the diagnosis, which is what an evaluation establishes.
Is cortisone bad for tendons?
An occasional cortisone injection is a long-standing, legitimate tool. The concern is repetition. In a systematic review of randomized trials in The Lancet (Coombes, Bisset, and Vicenzino, 2010), corticosteroid injections for tendinopathy helped in the short term but did worse than other treatments over the intermediate and long term. Laboratory work in the British Journal of Sports Medicine (Dean and colleagues, 2014) described a mechanism by which steroid is toxic to tendon cells. None of this means one shot is dangerous. It means repeated cortisone, used as the long-term answer for a degenerative tendon, can work against the very tissue you are trying to save. That is the reason many active adults look for a non-injection option such as focused shockwave instead, especially when each shot seems to help for a shorter stretch than the last.
Does shockwave therapy hurt, and is it really needle-free?
Focused shockwave therapy is needle-free and non-injection. Nothing is placed into the body. A coupling head transmits focused acoustic energy through the skin to a defined depth in the tendon, so there is no shot, no medication, and no recovery downtime from a puncture. Most people describe the sensation as a deep, tolerable tapping or pressure at the treatment site, and the energy level is adjusted to what you can comfortably handle. Because it is not an injection, it avoids the tissue concerns associated with repeated corticosteroid shots. A typical course is a short series of sessions spaced about a week apart, and most people return to normal activity right after each one. At Dynamic Athlete this is delivered as Dynamic Shockwave+, true focused ESWT plus EMTT every session, with the dose set to the tendon and the case.
Can I do shockwave after I have already had cortisone injections?
Usually, yes. Many people arrive at focused shockwave precisely because cortisone helped less each time, and a prior injection does not rule out shockwave. The starting point is an evaluation to find the actual source of the pain, often with a focused exam, because a tendon that has already been injected may have other features worth understanding before the next step. Focused shockwave does not put anything into the tissue, so it can be a reasonable next move when the inflammatory approach has run its course and the tendon itself is the problem. If shockwave alone is not enough for your case, it can be combined with or escalated to regenerative options such as High-Dose Dynamic PRP+ under the same physician. The plan is matched to the tendon, not to a default.
Which tendon problems respond best to shockwave instead of cortisone?
Focused shockwave has a strong published evidence base in chronic tendon and fascia conditions where the structure, not just the inflammation, is the problem. Common examples include chronic plantar fasciitis, calcific tendonitis of the shoulder, Achilles tendinopathy, patellar tendinopathy (jumper’s knee), proximal hamstring tendinopathy, and chronic tennis or golfer’s elbow. These are the situations where a cortisone shot tends to calm things briefly and then fade, because the steroid does not change the degenerated tendon. Focused electromagnetic ESWT is engineered to reach a defined depth and stimulate a repair response in exactly that kind of tissue. The right match still depends on the diagnosis. The evaluation at Dynamic Athlete establishes whether your tendon is a good candidate for shockwave, for a reparative injection, or for a combination.
Is the shockwave at Dynamic Athlete the same as what other Boulder clinics offer?
Not necessarily, and the difference matters for tendon work. The word shockwave is used for two different technologies. True focused electromagnetic shockwave (ESWT) produces a real acoustic shockwave that reaches a defined depth in the tendon. Radial pressure wave is a separate, more superficial pressure-wave modality. The International Society for Medical Shockwave Treatment (ISMST), the American Society for Medical Shockwave Treatment (ASMST), and the American Shockwave Training Institute (ASTI) all classify them as distinct. The strong published evidence for deep tendinopathy and calcific tendonitis is built on focused ESWT. Dynamic Shockwave+ delivers true focused ESWT plus EMTT every session on the Storz gold-standard system, with radial as an adjunct when indicated. If a clinic only owns a radial unit, that is not the focused treatment the tendon evidence is built on.
Where can I get shockwave for tendon pain in Boulder, Colorado?
Dynamic Athlete Sports Medicine and Regenerative Orthopaedics in Boulder offers Dynamic Shockwave+, true focused electromagnetic shockwave (ESWT) plus EMTT every session on the Storz gold-standard system, with radial pressure wave as an adjunct when clinically indicated. The clinic is led by Dr. Aneesh Garg, DO, CAQ, The Regen Doc, who founded and directs the American Shockwave Training Institute (ASTI), where he trains other clinicians and physicians on focused shockwave. He starts by finding the actual source of the tendon pain rather than defaulting to another injection, then matches the tool to the tissue, with escalation to High-Dose Dynamic PRP+ or stem cell options under the same physician when shockwave alone is not enough. Over 90% of our patients self-report a 75% or greater improvement, all without surgery.
The needle-free way to work on the tendon, not just calm it
True focused ESWT plus EMTT on the Storz gold-standard system. The first step is finding the actual source, then matching the tool to the tendon, with escalation to PRP or biologics if shockwave alone is not enough.