Lateral epicondylitis

LATERAL EPICONDYLITIS

Lateral epicondylitis is an overuse condition affecting the tendons that attach to the bony prominence on the outside of the elbow. It mainly involves the common extensor tendon that straightens the wrist and fingers, causing pain at the outer elbow which may spread down the forearm and is often aggravated by gripping, lifting or resisted wrist extension. Despite its name, most people with tennis elbow do not play tennis; it is common in anyone performing repetitive wrist and arm movements, including manual workers, racquet-sport players and people who use a keyboard or mouse for long periods.

How repetitive movements lead to lateral epicondylitis

In lateral epicondylitis, the tendons of the wrist and finger extensor muscles, particularly the extensor carpi radialis brevis, are repeatedly loaded at their origin on the lateral epicondyle of the humerus. Over time this can lead to tendinopathy – micro-damage and degenerative changes within the tendon – rather than a simple acute inflammation, which helps explain why symptoms can persist when the arm continues to be overloaded. Pain is typically localised to the outer aspect of the elbow, worsened by resisted wrist extension, gripping or lifting with the elbow extended, and many people struggle with everyday tasks such as pouring from a kettle, turning a door handle or prolonged mouse use.

Diagnosis is largely clinical, based on a history of repetitive use and focal tenderness over or just distal to the lateral epicondyle, with provocative tests that reproduce pain during resisted extension of the wrist or middle finger. Imaging (ultrasound or MRI) is reserved for atypical cases, persistent symptoms or suspicion of other pathology, such as joint disease or nerve entrapment. For most people, management is conservative, focusing on education, activity modification and a structured exercise programme designed to progressively restore tendon load tolerance and upper-limb function.

Physiotherapy plan

In lateral epicondylitis, physiotherapy focuses on reducing pain while gradually restoring the tendon’s ability to cope with everyday and sporting loads. Early management emphasises education, modification of aggravating movements (such as strong gripping, repetitive mouse use or heavy manual work) and gentle, tolerable range-of-motion and isometric exercises for the wrist extensors. A counterforce brace may be helpful for some individuals during certain tasks, under the guidance of their clinician.

As symptoms settle, rehabilitation progresses to graded strengthening of the wrist and forearm extensors, combined with scapular and upper-limb control exercises. Programmes typically begin with low-load work within a comfortable range and then build towards more dynamic and functional activities that mirror the person’s work or sport demands. Careful progression of intensity, appropriate rest periods and a realistic, supervised home-exercise plan help reduce flare-ups and support a safer return to higher-level activities involving the elbow.

Frequently Asked Questions

What is lateral epicondylitis?
It is a tendinopathy of the wrist extensor tendons at the outside of the elbow, causing pain and tenderness, especially with gripping and wrist extension.
Where is the pain usually felt?
Pain is typically felt over the bony bump on the outer side of the elbow and may radiate into the upper forearm.
What everyday activities are commonly affected?
People often notice pain when gripping firmly, lifting with a straight elbow or turning objects such as jars and door handles.
Do I always need X-rays or an MRI?
No in most cases diagnosis is clinical, and imaging is used only for atypical cases or persistent symptoms.
How long can symptoms last?
Symptoms may persist for weeks or months but usually improve gradually with appropriate load management and exercise.
Do I need to completely rest my arm?
Not usually activity is generally modified rather than stopped altogether, to maintain tendon capacity while symptoms settle.
Do strengthening exercises help or can they make it worse?
When progressed gradually, strengthening is a key part of recovery; sudden or excessive loading, however, can trigger a flare-up.
Can I keep exercising or playing sport?
Often yes, if intensity, frequency and technique are adjusted so that the lateral elbow is not excessively stressed.
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