Tennis Elbow
What Tennis Elbow Is
Tennis elbow, medically known as lateral epicondylitis, is a painful condition that affects the tendons on the outside of the elbow. These tendons connect the forearm muscles to the lateral epicondyle, a bony bump on the outer elbow. When these muscles and tendons are overused or strained, tiny microtears develop in the tendon fibers, leading to inflammation, tenderness, and pain. Despite its name, tennis elbow is not limited to tennis players—any repetitive gripping or wrist-extending activity can trigger it. The condition can range from mild discomfort to significant pain that interferes with daily activities, such as lifting objects, gripping tools, or even shaking hands. Tennis elbow is one of the most common elbow disorders and can affect anyone who repeatedly uses their forearm muscles.
What Are the Causes
Tennis elbow occurs when repetitive motions place excessive strain on the tendons of the forearm, particularly the extensor carpi radialis brevis (ECRB) tendon. Activities requiring repetitive wrist extension, gripping, twisting, or lifting can gradually damage the tendon fibers. Common causes include racquet sports, manual labor, repetitive typing, heavy lifting, carpentry, painting, and using tools such as screwdrivers or scissors. Poor form during sports or physical exertion can accelerate tendon stress. Age is another contributing factor—tendons lose elasticity over time, making individuals between 30 and 60 more susceptible. A sudden increase in activity level, incorrect equipment use, or underlying muscle imbalances may also increase risk. The condition develops gradually for most people, though it may occur suddenly after an intense activity or overexertion.
Symptoms
The hallmark symptom of tennis elbow is pain and tenderness on the outer side of the elbow, typically around the lateral epicondyle. This discomfort may radiate down the forearm toward the wrist. Pain is often aggravated by gripping objects, lifting with the palm facing downward, twisting motions, or activities requiring wrist extension. Individuals may notice reduced grip strength, difficulty holding cups or tools, or pain when shaking hands. Some experience stiffness or a burning sensation in the outer elbow. Symptoms tend to worsen during repetitive tasks and may flare during activities such as carrying groceries, typing for long periods, or performing sports-related motions. In severe cases, even light activities can trigger significant pain.
How Many People Are Having It
Tennis elbow affects approximately 1% to 3% of the population each year. It is most common in adults between 30 and 60 years old. Although athletes often develop it, more than 90% of cases occur in people who do not play tennis. Occupations with repetitive arm movements—such as painters, plumbers, carpenters, cooks, and office workers—have higher rates of this condition. Racquet sport players, especially those with poor technique or improper equipment, are also prone to developing tennis elbow. Because the condition develops gradually, many individuals delay seeking treatment, which contributes to prolonged discomfort and reduced function.
Complications
If left untreated, tennis elbow can progress to chronic tendon degeneration known as tendinosis. Persistent inflammation may weaken the tendon, reducing forearm strength and limiting functional ability. Individuals may develop compensatory arm or shoulder movements, leading to pain in surrounding joints or muscles. Severe cases can significantly impact daily tasks such as lifting objects, typing, cooking, or engaging in recreational activities. Chronic pain may affect sleep quality, athletic performance, and work productivity. In rare cases, untreated tendon damage may lead to partial tears, requiring more advanced medical intervention. Early diagnosis and proper management help reduce the risk of long-term complications.
Diagnosis
Diagnosis begins with a detailed evaluation of symptoms, activity history, and physical examination. A clinician will assess the elbow for tenderness over the lateral epicondyle and evaluate range of motion, grip strength, and pain during resisted wrist extension or finger extension. Specific tests, such as Cozen’s test or Mill’s test, help identify tendon involvement. Imaging studies may be used in certain cases—X-rays can rule out arthritis or fractures, while ultrasound or MRI can identify tendon tears or degenerative changes. Most cases are diagnosed based on clinical presentation, and extensive testing is usually unnecessary unless symptoms persist or the diagnosis is unclear.
Treatment Options
Treatment focuses on reducing pain, restoring tendon function, and preventing recurrence. Rest and activity modification are essential—avoiding repetitive motions and reducing strain on the affected arm helps promote healing. Ice therapy may help decrease inflammation, while heat therapy can relax tight muscles. Physical therapy is highly effective and typically includes stretching, eccentric strengthening exercises, manual therapy, and techniques to improve forearm stability. Bracing or counterforce straps can reduce tension on the tendon during movement. Ergonomic adjustments and improved technique in sports or work activities help reduce recurrence.
Over-the-counter anti-inflammatory medications may provide temporary relief, though long-term use is not recommended. Shockwave therapy, platelet-based interventions, and other regenerative approaches may be considered when conservative methods are insufficient. In rare cases where symptoms persist beyond 6 to 12 months despite consistent management, surgical options may be discussed to remove damaged tissue and restore tendon function. Most individuals recover well with proper treatment and activity modification.