Overview
Tennis elbow is an overuse injury affecting the tendons on the outside of the elbow. PRP therapy has shown particular promise in treating this condition by promoting tendon healing.
Understanding Tennis Elbow (Lateral Epicondylitis) & Regenerative Medicine
Tennis elbow, medically known as lateral epicondylitis, is a painful condition caused by overuse of the forearm muscles and tendons that attach to the bony bump on the outside of the elbow (the lateral epicondyle). Despite its name, tennis elbow does not only affect tennis players — it is common among anyone who performs repetitive gripping, twisting, or lifting motions with the hands and wrists. This includes painters, plumbers, carpenters, butchers, and office workers who use a computer mouse extensively. The condition develops when small tears form in the tendon, leading to pain, tenderness, and weakness that can make it difficult to grip objects, turn a doorknob, or shake hands.
PRP (platelet-rich plasma) therapy has emerged as one of the more promising regenerative treatments for tennis elbow and has been studied more extensively for this condition than for many other musculoskeletal problems. The treatment involves drawing a small amount of the patient's blood, concentrating the platelets in a centrifuge, and injecting the resulting PRP into and around the damaged tendon. The concentrated growth factors in PRP may help stimulate the body's natural healing processes, reduce inflammation, and promote the repair of the damaged tendon tissue. Some clinics also offer exosome therapy as an additional or alternative biologic treatment.
Most cases of tennis elbow improve with conservative treatments, including rest, ice, bracing, physical therapy, and anti-inflammatory medications. However, approximately 10-20% of cases become chronic and resistant to standard treatments. It is in these chronic, refractory cases that regenerative medicine may be most useful. PRP therapy is typically considered after a patient has tried conservative treatments for at least three to six months without sufficient improvement. Corticosteroid injections, while they provide quick short-term relief, have been shown in studies to have worse long-term outcomes than PRP and may actually weaken the tendon over time.
Patients should have realistic expectations about the timeline for improvement with PRP therapy. Unlike corticosteroid injections, which work quickly by suppressing inflammation, PRP works by promoting actual tissue healing, which takes time. Most patients begin to notice improvement four to six weeks after the injection, with continued improvement over the following months. One to three treatment sessions may be needed for optimal results.
Common Symptoms
- Pain on the outside of the elbow
- Weak grip strength
- Pain when lifting objects
- Stiffness in the morning
- Pain that radiates down the forearm
Clinical Evidence & Research
Tennis elbow is one of the conditions with the strongest evidence supporting PRP therapy. A landmark randomized controlled trial published in the American Journal of Sports Medicine in 2010 found that PRP injections provided significantly better pain relief and functional improvement than corticosteroid injections at one-year follow-up. Several subsequent studies and meta-analyses have confirmed these findings, showing that PRP tends to outperform corticosteroids in the medium to long term for chronic lateral epicondylitis.
The evidence is strong enough that some orthopedic guidelines now recognize PRP as a reasonable treatment option for chronic tennis elbow that has not responded to conservative measures. However, it is important to note that not all studies have shown positive results, and the optimal preparation method, concentration of platelets, and number of injections are still being researched. The American Academy of Orthopaedic Surgeons (AAOS) acknowledges the growing evidence but has not yet issued a formal endorsement of PRP as a first-line treatment.
Regenerative Treatment Options
Risks & Considerations
- Temporary increase in elbow pain for several days after the injection
- Mild swelling or bruising at the injection site
- Rare risk of infection with any injection procedure
- Possibility that symptoms do not improve despite treatment
- Cost of treatment, as PRP is generally not covered by insurance for this condition
Questions to Ask Your Provider
- 1How long have I had symptoms, and have I given conservative treatments enough time to work?
- 2What PRP preparation system does the clinic use, and what platelet concentration is achieved?
- 3How many PRP treatments for tennis elbow has this provider performed?
- 4Should I avoid corticosteroid injections before or after PRP treatment?
- 5What post-procedure protocol (rest, physical therapy, activity modification) should I follow?
References & Resources
Last reviewed: March 2026
This content was compiled from publicly available medical literature including peer-reviewed journals, professional organization guidelines, and government health resources. It is intended for informational purposes only and does not constitute medical advice. This page has not been reviewed by an independent medical professional. Always consult a qualified healthcare provider before making treatment decisions.