1. What Is Tennis Elbow?

Tennis elbow, medically known as lateral epicondylalgia, is a common painful condition affecting the outer aspect of the elbow. Despite its name, it is not limited to tennis players. It commonly develops from repetitive gripping, lifting, wrist movements, or other activities that place repeated load on the wrist extensor muscles and their tendon attachment near the lateral epicondyle.

Tennis elbow is primarily a load-related tendon disorder involving the common extensor tendon, particularly the extensor carpi radialis brevis (ECRB). Although the condition is traditionally called lateral epicondylitis, chronic cases are generally considered more consistent with tendinopathy rather than an inflammatory process.

2. Causes and Risk Factors

Tennis elbow usually develops because of repetitive loading rather than one single injury.

Common activities:
• Repetitive gripping
• Racquet sports
• Manual work
• Screwdriver use
• Repeated wrist extension
• Lifting objects with the palm facing downward
• Repetitive household activities
• Gardening
• Construction work
• Repetitive occupational tasks

Risk factors:
• Repetitive wrist and forearm movements
• Sudden increase in activity
• Poor lifting technique
• Repetitive heavy gripping
• Inadequate recovery between activities
• Previous elbow or forearm problems
• Work involving prolonged manual loading

4. Signs and Symptoms

The most common symptom is pain around the outer side of the elbow.

Common symptoms:
• Pain over the lateral elbow
• Pain during gripping
• Pain when lifting objects
• Pain while opening a jar
• Pain during wrist extension
• Forearm discomfort
• Reduced grip strength
• Pain when shaking hands
• Difficulty carrying objects
• Tenderness around the lateral epicondyle

Some patients may also report pain extending down the outer forearm.

5. Clinical Presentation

Patients often describe pain during activities that require grip + wrist extension. For example, a person may experience pain while lifting a cup, carrying a bag, opening a bottle, or shaking someone's hand.

Pain may initially occur only during activity but can become more persistent if the tendon continues to be overloaded without adequate recovery.

6. Physiotherapy Assessment

Subjective assessment:
• Location, onset and duration of pain
• Occupation and sporting activities
• Repetitive tasks and recent workload changes
• Pain severity and aggravating activities
• Functional limitations
• Previous elbow injuries and current treatment

Observation:
• Upper-limb posture
• Arm use during functional activities
• Swelling or visible abnormalities
• Muscle wasting
• Movement patterns

Palpation:
• Lateral epicondyle
• Common extensor tendon
• ECRB region
• Surrounding soft tissues

Tenderness around the lateral epicondyle/common extensor tendon can support the clinical diagnosis.

7. Range of Motion Assessment

Assess:
• Elbow flexion and extension
• Forearm pronation and supination
• Wrist flexion
• Wrist extension

Most patients have relatively preserved elbow ROM, but pain may occur during specific movements or resisted activity.

8. Strength Assessment

Assess:
• Grip strength
• Wrist extension strength
• Wrist flexion strength
• Forearm pronation and supination
• Functional gripping ability

A painful reduction in grip strength may be present. Grip strength can be measured using a hand dynamometer when available.

9. Special Tests

Cozen's Test: The patient makes a fist and performs resisted wrist extension with the forearm pronated. Positive finding: reproduction of pain around the lateral elbow.

Mill's Test: The forearm is pronated, the wrist is flexed, and the elbow is extended. Positive finding: reproduction of lateral elbow pain.

Maudsley's Test: Resisted extension of the middle finger is performed. Positive finding: reproduction of pain around the lateral elbow.

These tests should be interpreted together with the patient's history and physical examination rather than used in isolation.

10. Differential Diagnosis

Not every case of lateral elbow pain is tennis elbow.

Conditions that may produce similar symptoms include:
• Radial tunnel syndrome
• Cervical radiculopathy
• Referred cervical pain
• Posterolateral elbow instability
• Osteoarthritis
• Other elbow tendinopathies
• Nerve-related disorders
• Acute traumatic injury

A thorough assessment is important, particularly when symptoms are unusual or persistent.

11. Grading / Severity

There is no single universally accepted grading system for all cases of tennis elbow, but severity can be described according to pain, functional limitation, and load tolerance.

12. Physiotherapy Management

Primary goals:
• Reduce pain
• Modify excessive tendon loading
• Restore wrist and forearm strength
• Improve grip strength
• Increase tendon load tolerance
• Restore functional activities
• Prevent recurrence

Management should be individualized according to irritability, duration of symptoms, occupation, and activity demands.

Phase 1: Pain Management and Load Modification

Identify activities that excessively aggravate symptoms.

Temporarily reduce heavy gripping, repetitive wrist extension, heavy lifting, repetitive manual tasks, and activities that consistently produce significant pain.

Complete rest is usually unnecessary. The goal is to reduce excessive loading while maintaining appropriate movement and activity.

Phase 2: Gentle Mobility

Gentle wrist flexion/extension and forearm pronation/supination can help maintain mobility. Exercises should be performed through a comfortable range and should not significantly increase symptoms.

13. Isometric Exercises

Wrist Extension Isometric:
• Rest the forearm on a table.
• Keep the wrist in a neutral position.
• Apply resistance against wrist extension without allowing movement.
• Hold approximately 20–30 seconds.
• Perform 3–5 repetitions according to tolerance.

The exercise should be adjusted according to symptom response.

14. Progressive Strengthening

Wrist Extension Strengthening:
• Support the forearm.
• Allow the wrist to move slowly into flexion.
• Lift the wrist into extension.
• Lower slowly and under control.

A practical starting point may be 2–3 sets of 10–15 repetitions. Progress resistance gradually as tolerated.

15. Eccentric Strengthening

Eccentric loading has traditionally been used in tendon rehabilitation.

Example:
• Support the forearm.
• Use the opposite hand to assist the wrist into extension.
• Slowly lower the affected wrist into flexion.
• Return to the starting position with assistance if required.

Begin with manageable resistance and progressively increase the load. Eccentric exercises can be incorporated into a broader progressive resistance program.

16. Grip Strengthening

Grip strengthening is important because gripping commonly reproduces symptoms.

Possible exercises:
• Soft-ball squeezing
• Therapy putty exercises
• Hand-grip exercises
• Functional gripping activities

Begin with low resistance and gradually increase resistance according to tolerance.

17. Forearm and Upper-Limb Strengthening

Rehabilitation may also include wrist flexor strengthening, wrist extensor strengthening, forearm pronation/supination strengthening, shoulder strengthening, and scapular strengthening. This helps restore overall upper-limb function and tolerance to physical activity.

18. Manual Therapy

Depending on the patient's presentation, a physiotherapist may use soft-tissue techniques, joint mobilization, mobilization with movement, and stretching techniques. Manual therapy may provide short-term pain relief and can be combined with an exercise-based rehabilitation program.

19. Bracing and Support

Some patients may benefit from a counterforce elbow strap or wrist support. A brace may temporarily reduce provocative loading during activities. However, it should generally be considered an adjunct, not a replacement for progressive rehabilitation.

20. Return to Activity

Return to sport, work, or demanding activities should be gradual.

Low-load activity
↓
Basic strengthening
↓
Progressive resistance
↓
Functional gripping
↓
Sport/work-specific activities
↓
Full activity

The patient's symptoms and response to increasing workload should guide progression.

21. Prevention

To reduce recurrence:
• Increase workload gradually
• Avoid sudden increases in repetitive activity
• Use appropriate lifting techniques
• Take breaks during repetitive tasks
• Maintain forearm and wrist strength
• Maintain general upper-limb conditioning
• Gradually return to sport after symptoms improve
• Avoid repeatedly working through significant pain

25. Frequently Asked Questions

Is tennis elbow caused only by playing tennis?
No. Tennis elbow can occur in people who do not play tennis. Repetitive gripping, lifting, manual work, and wrist movements can also overload the tendon.

How long does tennis elbow take to improve?
Recovery varies considerably. Some people improve over weeks, while persistent cases may require several months of progressive rehabilitation.

Should I completely rest my arm?
Usually, complete rest is unnecessary. Reducing aggravating loads while maintaining appropriate movement and gradually rebuilding strength is generally more useful.

Can physiotherapy help tennis elbow?
Yes. Physiotherapy can include education, activity modification, progressive strengthening, functional rehabilitation, and selected manual therapy techniques.

Should I use an elbow strap?
A counterforce strap may provide short-term support for some people during aggravating activities, but it should generally be used alongside rehabilitation rather than as the primary treatment.

Can tennis elbow come back?
Yes. Recurrence can occur, particularly when workload is increased rapidly or the underlying load tolerance has not been restored.

When should I see a doctor?
Seek medical assessment if there is significant trauma, severe swelling, progressive weakness, neurological symptoms, fever, deformity, or persistent/worsening symptoms despite appropriate management.

Conclusion

Tennis elbow is a common condition associated with overloading of the tissues around the lateral elbow, particularly the common extensor tendon. A successful rehabilitation program focuses on understanding the patient's activities, modifying excessive loads, controlling symptoms, and progressively restoring tendon and upper-limb capacity.

Education + appropriate load management + progressive strengthening + gradual return to function form the foundation of physiotherapy rehabilitation.

Severity Reference Table