Platelet-Rich Plasma (PRP) for Tennis Elbow: A Smarter Way to Heal Tendon Injuries
Tennis elbow, medically known as lateral epicondylitis, is one of the most common causes of elbow pain. It affects the tendons that attach the forearm muscles to the outer part of the elbow. Despite the name, most people who develop tennis elbow do not play tennis at all.
Understanding what tennis elbow is—and why platelet-rich plasma (PRP) may be a better treatment than steroid injections—can help patients make more informed decisions about their care.
What Is Tennis Elbow (Lateral Epicondylitis)?
Tennis elbow occurs when the tendons on the outside of the elbow become damaged from repetitive stress. These tendons connect the forearm muscles that control wrist and hand movement to the lateral epicondyle, a small bony prominence on the outside of the elbow.
For many years, tennis elbow was believed to be primarily an inflammatory condition. However, research now shows that lateral epicondylitis is actually a degenerative tendon injury, meaning the tendon fibers slowly break down over time.
The tendon most often affected is the extensor carpi radialis brevis, which plays an important role in gripping and lifting.
Because these movements are used frequently in daily life, even small tendon injuries can lead to persistent elbow pain.
Symptoms of Tennis Elbow
The symptoms of tennis elbow usually develop gradually and can worsen with continued use of the arm.
Common symptoms include:
- Pain on the outside of the elbow
- Tenderness over the lateral epicondyle
- Weak grip strength
- Pain when lifting objects
- Pain when turning a doorknob or opening a jar
- Discomfort when shaking hands
In many cases, the pain can travel down the forearm and interfere with work, exercise, and everyday activities.
What Causes Tennis Elbow?
Tennis elbow is most often caused by repetitive stress placed on the forearm muscles and tendons.
Common causes include:
- Repetitive gripping activities
- Manual labor or tool use
- Racquet sports
- Weight training
- Frequent computer or mouse use
- Occupational overuse of the forearm
Only about 10% of people with tennis elbow are actually tennis players, which is why the condition is sometimes called lateral elbow tendinopathy.
Adults between ages 40 and 55 develop tennis elbow most frequently, especially those whose work requires repetitive arm movements.
Traditional Treatment: Steroid Injections
For decades, physicians commonly treated tennis elbow with corticosteroid injections.
Steroid injections reduce inflammation and can provide rapid pain relief. However, the pain relief is usually short-lived and they do not repair the underlying tendon damage.
In fact, steroids often weaken tendon tissue over time, which may increase the risk of recurrence and the need for surgery.
Platelet-Rich Plasma (PRP): A Regenerative Treatment for Tennis Elbow
Platelet-rich plasma (PRP) is a regenerative medicine treatment designed to help the body heal injured tissue.
PRP is created by drawing a small amount of the patient’s blood and spinning it in a centrifuge to concentrate platelets. Platelets contain powerful growth factors and signaling proteins that play an essential role in tissue repair.
When PRP is injected precisely into the injured parts of the tendon under ultrasound guidance, these growth factors help stimulate healing, collagen production, and tissue remodeling.
Unlike steroid injections, PRP targets the underlying tendon injury rather than simply masking the pain.
Research Comparing PRP vs Steroid Injections for Tennis Elbow
A 2020 randomized controlled trial by Japatti and Janardhan compared platelet-rich plasma (PRP) injections with steroid injections for the treatment of tennis elbow (lateral epicondylitis).
The study found:
- Both treatments improved pain initially
- PRP produced significantly better results over time
- Patients treated with steroids often experienced recurrence of symptoms
- PRP led to greater long-term pain relief and improved function
The researchers concluded that while steroid injections may provide short-term symptom relief, PRP offers superior long-term outcomes for tennis elbow.
This finding aligns with a growing body of research showing that platelet-rich plasma helps support tendon healing, making it a promising treatment for chronic tendon injuries.
Why PRP Is Often a Better Treatment for Tennis Elbow
The difference between PRP and steroid injections comes down to biology.
Steroid injections:
- Reduce inflammation
- Provide short-term pain relief
- Do not repair tendon damage, and may often weaken the tendon
Platelet-rich plasma (PRP):
- Delivers growth factors that stimulate healing
- Supports collagen repair in damaged tendons
- Helps restore tendon structure
- Provides longer-lasting symptom improvement
Because tennis elbow is a degenerative tendon condition, treatments that support tissue healing—like PRP—may offer better long-term results.
Why Platelet Dose Matters in PRP Treatment
Another important factor in the successful treatment of lateral epicondylitis with PRP is dose.
While the minimum effective dose of platelets has not yet been established for tennis elbow (lateral epicondylitis)—and likely varies depending on the severity of the condition—research and clinical experience suggest that higher platelet concentrations tend to produce better healing responses.
Platelets contain growth factors that drive tissue repair. Delivering a stronger concentration of these signals can help stimulate a more robust healing process in damaged tendons.
At LifeStem Regenerative Medicine, we leverage our extensive experience in regenerative therapies to deliver an effective dose of platelets precisely at the site of tendon injury. By combining appropriate platelet dosing with precise imaging-guided injections, we aim to create the optimal environment for tendon healing and long-term recovery.
The Importance of Precision PRP Injections
For PRP treatment of tennis elbow, accurate diagnosis and precise injection technique are essential.
Ultrasound guidance allows physicians to identify the exact area of tendon injury and place the platelet-rich plasma directly into the damaged tissue. This targeted approach helps maximize the healing response.
The Bottom Line
Tennis elbow is a common but frustrating condition that can interfere with work, exercise, and everyday life.
While steroid injections may offer temporary pain relief, they do not repair tendon damage and symptoms often return.
Platelet-rich plasma (PRP) offers a different approach—one that supports the body’s natural healing process and may lead to more durable improvement in pain and function.
For patients struggling with persistent tennis elbow, regenerative therapies like PRP are helping shift treatment away from short-term symptom management toward supporting true tissue healing.