Question explored with the scientific record
Treatment for lateral epicondylitis
The best evidence points to dry needling or platelet-rich plasma over corticosteroid injections for lasting improvement, but the studies are small, unblinded, and funded by no one you can trust.
For lateral epicondylitis (tennis elbow), the two most informative trials here compare injections and needling. A 2011 study of 100 patients found that a single platelet-rich plasma (PRP) injection produced significantly better pain and function scores than a corticosteroid injection at two years, while the steroid group's scores had returned to baseline [1]. A 2021 trial of 101 patients found that dry needling (five sessions) produced significantly greater improvement on the PRTEE scale than a single corticosteroid injection at both day 20 and 6 months [2]. Both PRP and dry needling outperformed steroids in the medium term.
The adverse effects matter. In the dry needling trial, one patient (about 2 in 100) dropped out because the needling was too painful [2]. In the corticosteroid group, four patients (about 8 in 100) developed skin atrophy and whitening at the injection site by 6 months [2]. Corticosteroids give quick short-term relief but carry a real risk of tissue damage and their benefit fades. The PRP study did not report adverse events in detail [1].
| Treatment | Patients | Key outcome at 6-24 months | Notable adverse effects |
|---|---|---|---|
| PRP injection (single) | 51 | Sustained improvement at 2 years [1] | Not detailed in study |
| Dry needling (5 sessions) | 49 | PRTEE ~10 at 6 months [2] | ~2% withdrew due to pain |
| Corticosteroid injection (single) | 52-49 | Benefit faded by 2 years [1]; ~8% skin atrophy [2] | Skin atrophy, whitening |
The evidence for shockwave therapy is weaker. A 2005 trial of 60 patients with previously untreated tennis elbow found no significant benefit of shockwave over sham therapy, and the effect depended on symptom duration [4]. A 2026 meta-analysis of shockwave for Achilles tendinopathy found no overall benefit on pain or function [3]. Shockwave is not well-supported for this condition.
My call: dry needling or PRP are the better bets for lasting improvement. Corticosteroid injections offer short-term relief but risk skin damage and do not hold up. Shockwave therapy lacks convincing evidence for tennis elbow. Confidence: moderate. The trials are small, unblinded, and lack a true placebo or untreated control group, so the real effect size may be smaller than reported.
Sources used 4
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Ongoing Positive Effect of Platelet-Rich Plasma Versus Corticosteroid Injection in Lateral Epicondylitis
This study demonstrates that a single injection of concentrated autologous platelets (PRP) significantly improves pain and function in patients with chronic lateral epicondylitis compared to corticosteroid injections, with effects sustained over a two-year follow-up period.
DOI: 10.1177/0363546510397173 -
The use of dry needling vs. corticosteroid injection to treat lateral epicondylitis: a prospective, randomized, controlled study
In a prospective randomized controlled trial of 101 patients with lateral epicondylitis, dry needling produced significantly greater PRTEE improvements than corticosteroid injection at day 20 and 6 months; both treatments were effective.
DOI: 10.1016/j.jse.2020.08.044 -
Extracorporeal shockwave therapy versus sham extracorporeal shockwave therapy for chronic Achilles tendinopathy: a meta-analysis of randomized controlled trials
Eight randomized trials (458 participants) comparing extracorporeal shockwave therapy (ESWT) with sham ESWT for chronic Achilles tendinopathy found no overall benefit on pain or function, though exploratory analyses suggest temporary short-term pain relief in patients with sympt…
DOI: 10.7717/peerj.20506 -
Long-Term Effectiveness of Extracorporeal Shockwave Therapy in the Treatment of Previously Untreated Lateral Epicondylitis
This study investigates the long-term effectiveness of extracorporeal shockwave therapy (ESWT) combined with a stretching program for treating previously untreated lateral epicondylitis, finding no significant benefit compared to sham therapy, particularly influenced by the dura…
DOI: 10.1097/01.jsm.0000179137.69598.7e