Lateral epicondylitis, commonly called “tennis elbow,” is pain related to the tendons attaching on the outside of the elbow. It most often involves the wrist extensor tendons, especially the extensor carpi radialis brevis. Despite the word “tendinitis,” the condition is often a tendinopathy: the tendon may show overload and structural changes without substantial inflammation. This page provides general medical information; an examination is still needed to confirm the diagnosis.
Symptoms and anatomy
Pain is usually felt over the bony prominence on the outside of the elbow and may extend down the forearm. It is often triggered by gripping, opening a jar, shaking hands, lifting, or extending the wrist against resistance. Reduced grip strength and local tenderness are common. Rest pain, marked loss of motion, numbness, or substantial neurological weakness call for a broader assessment.
Common causes: racket sports and repetitive work
In tennis, badminton, pickleball, and other racket sports, a rapid increase in playing volume, technique that overloads the wrist, an ill-fitting handle, or equipment that is too heavy can increase the load on the extensor tendons. Repeated strokes, off-centre contact, and insufficient recovery often matter more than one isolated movement.
The same mechanism can occur at work or at home during repetitive tasks: prolonged mouse or keyboard use, screwdriving, tool handling, packing, assembly-line work, lifting with the wrist extended, or sustained gripping. Risk reflects the combination of force, repetition, posture, and recovery time rather than one specific activity alone.
Diagnosis and differential considerations
Diagnosis is based on the history of the pain, examination of the elbow, wrist, shoulder, and neck, and strength and provocation tests. Musculoskeletal ultrasound may clarify the tendon findings and look for a partial tear, bursitis, or another painful structure. X-rays, additional imaging, or a neurological examination may be appropriate depending on the situation.
Outer-elbow pain is not always lateral epicondylitis. A clinician may also consider irritation of the radial nerve, pain referred from the neck, a joint condition, ligament injury, fracture, arthritis, or referred shoulder pain. Distinguishing these conditions matters before selecting treatment or an injection.
Conservative treatment
Treatment is usually progressive and adapted to the person’s daily load. Relative activity modification means temporarily reducing movements that clearly provoke pain while maintaining tolerated motion. Complete and prolonged avoidance of using the arm is not always necessary and may make return more difficult.
- Rehabilitation and physiotherapy: a programme may address mobility, wrist and elbow control, forearm strength, and gradual load progression.
- Progressive strengthening: isometric exercises can be followed by concentric and eccentric work, advanced according to symptoms and the tendon’s response over the following 24 hours.
- Ergonomics: adjusting workstation height, tools, grip, racket technique, string tension, or break frequency can reduce repetitive load.
- Symptom relief: heat or cold, temporary load reduction, and medicines recommended by a healthcare professional when appropriate may help a person participate in rehabilitation.
- Optional bracing: a forearm strap or wrist brace may reduce symptoms during a specific task, but it does not replace strengthening and activity adjustment.
Physiotherapy and exercise should not be selected solely from an image or a fixed protocol. Pain, strength, function, work demands, and sport goals guide progression. The sports medicine services page provides general information about available services.
When to consult
An assessment is appropriate when pain persists despite a reasonable activity adjustment, limits work or sleep, returns with every resumption, or is accompanied by loss of strength. Seek care sooner after significant trauma or with deformity, sudden inability to move the elbow or wrist, persistent numbness, fever, or rapidly worsening pain. The article Sports Injury: When to See a Sports Medicine Doctor describes other warning signs that warrant assessment.
PRP and ultrasound-guided injections
Platelet-rich plasma (PRP) may be discussed for some persistent tendinopathies after assessment and a structured trial of conservative care. Evidence for its effectiveness is variable: PRP is not guaranteed to help, is not suitable for every lesion, and does not replace load management or rehabilitation. The decision should consider the diagnosis, symptom duration, treatments already tried, goals, and the person’s preferences.
An ultrasound-guided injection allows the target and nearby structures to be seen during the procedure. Depending on the diagnosis, a clinician may discuss an appropriate injection; guidance improves precision but does not eliminate risks, contraindications, or uncertainty about the outcome. The product, timing, and technique should be individualized, and any injection should be part of an active recovery plan.
General information about pricing is provided separately; this page does not replace a clinical discussion or constitute personalized advice.
Recovery and return to activity
Recovery varies with symptom duration, work or sport load, baseline strength, sleep, health factors, and consistency of rehabilitation. Gradual improvement is expected, but tendinopathies can evolve over several weeks or months. A flare after returning too quickly does not necessarily mean the tendon is seriously damaged; it often means that the load exceeded its current capacity.
Return to racket sports, repetitive work, or training should be gradual. Before substantially increasing load, the goal is to perform daily activities with low and stable pain, have nearly full motion, show clearly improving strength and endurance compared with the opposite side, and tolerate sport- or work-specific exercises without lasting worsening the next day. Strokes, lifts, or work periods can then be increased in stages, with breaks and 24-hour symptom monitoring.
This page is for general information only and does not replace a medical consultation. Diagnosis, treatment options, and return-to-activity criteria must be adapted to each person by a qualified healthcare professional.