Lateral Epicondylitis: Symptoms, Examination, and Treatment
Clinical Presentation
Lateral epicondylitis presents with gradually increasing, load-related lateral elbow pain that typically involves the dominant arm (75% of cases) and most commonly affects patients over 40 years of age. 1
Key Symptoms
- Localized pain at the lateral epicondyle that may radiate to the forearm or upper arm 2
- Sharp or stabbing pain that initially occurs during activity but may subside after warm-up 1
- Pain progressively increases in intensity and duration, eventually present at rest in later stages 1
- Burning sensation around the lateral epicondyle 2
- Activities requiring repetitive wrist extension and flexion trigger or worsen symptoms 1
Risk Factors
- Racquet sports participation ("tennis elbow") 1
- Occupations requiring repetitive wrist movements 1
- Equal prevalence in men and women 1
Physical Examination Findings
Examination should include inspection for swelling, asymmetry, and erythema; palpation for tenderness over the lateral epicondyle; and provocative maneuvers that reproduce pain with resisted wrist extension. 1
Examination Components
- Inspection: Look for muscle atrophy (indicates chronicity), swelling, asymmetry, and erythema 1
- Palpation: Direct tenderness over the lateral epicondyle and common extensor origin 1
- Provocative tests:
- Range of motion testing to assess limitations 1
Common Pitfall
Joint effusions are uncommon with lateral epicondylitis and suggest intra-articular pathology requiring alternative diagnosis 1
Treatment Algorithm
Most patients (approximately 80%) fully recover within 3-6 months with conservative treatment consisting of relative rest, icing, and eccentric strengthening exercises. 1
First-Line Conservative Management
1. Relative Rest and Activity Modification
- Reduce repetitive loading activities that stress the affected tendon 1
- Technique modification for athletes and manual laborers to minimize repetitive stresses 1
2. Cryotherapy
- Apply melting ice water through wet towel for 10-minute periods 1
- Provides acute pain relief and is widely accepted 1
3. Eccentric Strengthening Exercises
- Most effective conservative treatment that may reverse degenerative changes 1
- Should be initiated as primary rehabilitation strategy 1
Second-Line Pharmacologic Management
4. Pain Relief Options
- NSAIDs: Effective for short-term pain relief but no effect on long-term outcomes 1
- Topical NSAIDs may have fewer systemic side effects 1
- NSAIDs cannot be recommended over other analgesics 1
5. Corticosteroid Injections
- More effective than NSAIDs in the acute phase but do not change long-term pain outcomes 1
- Use with caution given lack of long-term benefit 1
Adjunctive Therapies (Limited Evidence)
6. Orthotics and Braces
- Commonly used but no definitive conclusions about effectiveness 1
- Clinical experience and patient preference should guide use 1
7. Other Modalities
- Extracorporeal shock wave therapy: Mixed benefit, expensive 1
- Therapeutic ultrasonography, iontophoresis, phonophoresis: Uncertain benefit 1
Surgical Intervention
8. Surgery
- Reserved for patients who fail 3-6 months of well-managed conservative treatment 1
- Referral to orthopedic surgeon for evaluation 1
- Techniques include excision of abnormal tendon tissue and longitudinal tenotomies to release scarring and fibrosis 1
- Effective treatment option in carefully selected patients 1
Diagnostic Imaging
Radiographs are beneficial as initial imaging to rule out osseous pathology, intra-articular bodies, or occult fractures 4
- Ultrasonography: Quick, noninvasive tool to confirm or exclude diagnosis 2
- MRI: Complemented by radiographs when diagnosis remains unclear 1, 4
Critical Clinical Caveat
This condition is a degenerative tendinopathy (tendinosus), not an inflammatory process (tendonitis), despite common mislabeling. 1 Most patients presenting to primary care have chronic symptoms with degenerative changes rather than acute inflammation, which fundamentally affects treatment approach and expectations 1.