Olecranon bursitis is inflammation of the olecranon bursa, a superficial synovial-lined sac overlying the proximal ulna. It is one of the most commonly affected bursae in the body, with an annual incidence of at least 10/100,000, predominantly affecting males (80%) aged 40–60 years. Approximately two-thirds of cases are nonseptic (aseptic) and one-third are septic. [1-2]
1. History
- Mechanism: Ask about repetitive leaning on elbows (chronic microtrauma — "student's elbow," "miner's elbow"), direct acute trauma, or fall onto the elbow [3-4]
- Onset and timing: Acute (hours–days) vs. chronic/recurrent; insidious onset favors microtrauma or inflammatory etiology
- Skin integrity: Any abrasion, laceration, insect bite, or puncture wound over the olecranon — present in ~50% of septic cases [2]
- Systemic symptoms: Fever, chills, malaise (suggest septic bursitis)
- Pain characterization: Septic bursitis is typically more painful (tenderness in 88% septic vs. 36% aseptic) [2]
- Occupational history: Plumbers, HVAC workers, gardeners, carpet layers, mechanics — any occupation involving prolonged elbow pressure [1][5]
- Inflammatory conditions: History of gout, pseudogout, or rheumatoid arthritis
- Immunosuppression: Diabetes, chronic kidney disease, HIV, corticosteroid use, alcohol use disorder
- Important negatives: Absence of fever, absence of skin break, no joint pain with range of motion (helps distinguish from septic arthritis)
2. Alarm Features
- Fever >37.8°C — present in 38% of septic cases, 0% of aseptic [1-2]
- Rapidly spreading erythema/cellulitis extending beyond the bursa
- Purulent drainage from the bursa or overlying skin
- Systemic toxicity (tachycardia, hypotension, rigors) — consider bacteremia or necrotizing soft tissue infection
- Restricted elbow range of motion — raises concern for septic arthritis of the elbow joint (distinct from bursitis)
- Immunocompromised patient with any signs of infection — higher risk of treatment failure (OR 5.6 for recurrence) [6]
- Failure to improve on oral antibiotics within 48–72 hours
3. Medications
- Nonseptic bursitis:
- NSAIDs (ibuprofen 400–600 mg TID or naproxen 500 mg BID) — first-line for pain and inflammation [3][7]
- Compression bandaging + NSAIDs showed ~83% resolution by 4 weeks in an RCT [7]
- Corticosteroid injection (e.g., 40 mg triamcinolone): may hasten resolution (mean 2.3 weeks vs. 3.2 weeks) but carries risk of iatrogenic infection and skin atrophy; generally reserved for refractory cases [7-8]
- Avoid aspiration of nonseptic bursitis due to risk of introducing infection [4]
- Septic bursitis:
- Empiric antibiotics targeting Staphylococcus aureus (most common pathogen, ~73% of cases): [9]
- Mild/outpatient: Cephalexin 500 mg QID or TMP-SMX DS BID (if MRSA concern) or doxycycline 100 mg BID
- Consider clindamycin if penicillin-allergic
- Severe/inpatient: IV vancomycin or nafcillin/oxacillin depending on local resistance patterns
- Duration: Minimum 14 days — treatment <14 days associated with higher failure rates [9]
- IV antibiotics preferred when fever or extensive cellulitis present [9]
- Contraindicated: Corticosteroid injection in suspected septic bursitis
- Medication contributors: Immunosuppressants (corticosteroids, biologics, chemotherapy) increase septic bursitis risk
4. Diet
- Gout-related bursitis: Low-purine diet, limit alcohol (especially beer), limit fructose-sweetened beverages, adequate hydration
- General: No specific dietary modifications for traumatic or infectious bursitis
- Ensure adequate hydration if on NSAIDs to protect renal function
5. Review of Systems
- Constitutional: Fever, chills, night sweats, malaise (septic)
- Musculoskeletal: Joint pain elsewhere (polyarticular gout, RA), other joint swelling
- Skin: Rashes (psoriatic arthritis), tophi (gout), skin lesions/wounds near elbow
- Rheumatologic: Morning stiffness, symmetric joint involvement
- Infectious: Recent skin infections, IV drug use, recent procedures
6. Collateral History and Family History
- Occupational exposure: Repetitive elbow pressure at work — may qualify as occupational injury [1][10]
- Family history: Gout, rheumatoid arthritis, psoriatic arthritis
- Social context: Alcohol use (gout risk, immunosuppression), IV drug use (infection risk), housing/hygiene (wound care compliance)
- Recurrence history: Prior episodes and treatments received
7. Risk Factors
- Chronic microtrauma/repetitive pressure on the elbow — most common cause [3-4]
- Male sex (80% of cases) [1]
- Age 40–60 years [1]
- Skin disruption over the olecranon (abrasion, laceration, insect bite) [2]
- Immunosuppression: Diabetes, CKD, HIV, chronic corticosteroid use, alcohol use disorder [6]
- Crystal arthropathy: Gout, pseudogout [4]
- Rheumatoid arthritis (rheumatoid nodules at olecranon)
- Occupational: Plumbers, mechanics, students, miners, carpet layers
- Prior bursal aspiration or injection — risk of iatrogenic septic bursitis [4]
8. Differential Diagnosis
- Septic arthritis of the elbow — the critical cannot-miss diagnosis; distinguished by painful/restricted ROM through the arc of motion, not just over the bursa
- Gout/pseudogout — crystal-induced bursitis; may coexist with septic bursitis; aspirate with crystal analysis differentiates
- Cellulitis — overlapping erythema/warmth; ultrasound can distinguish fluid collection from soft tissue infection alone [4]
- Olecranon fracture — acute trauma; point tenderness over olecranon, inability to extend against gravity; X-ray differentiates
- Rheumatoid nodule — firm, non-fluctuant, non-tender; associated with seropositive RA
- Triceps tendinopathy/rupture — pain with resisted extension, palpable defect
- Elbow joint effusion — intra-articular; fullness in lateral triangle (between radial head, lateral epicondyle, olecranon)
- Soft tissue tumor (lipoma, sarcoma) — non-fluctuant, progressive, painless; imaging differentiates
9. Past Medical History
- Gout or pseudogout — crystal-induced bursitis
- Rheumatoid arthritis — chronic inflammatory bursitis
- Diabetes mellitus — increased infection risk, impaired wound healing
- Immunosuppressive conditions/medications
- Prior olecranon bursitis episodes — recurrence is common
- Prior bursal aspiration, injection, or bursectomy
- Chronic kidney disease — gout risk, NSAID caution
- Anticoagulation — hemorrhagic bursitis risk
10. Physical Exam
- Inspection: Focal, well-circumscribed, fluctuant swelling over the posterior elbow; assess for erythema, warmth, skin breaks, drainage
- Palpation: Tenderness (88% septic vs. 36% aseptic), warmth (84% septic vs. 56% aseptic), fluctuance [2]
- Prebursal skin temperature: Difference >2.2°C compared to contralateral side suggests septic etiology [1]
- Range of motion: Typically preserved in bursitis (may have mild discomfort at terminal flexion due to bursal distension); significantly restricted ROM suggests septic arthritis or intra-articular pathology
- Skin: Examine for overlying abrasions, puncture wounds, cellulitis extent; mark borders of erythema
- Lymph nodes: Epitrochlear and axillary lymphadenopathy (suggests infection)
- Vitals: Fever >37.8°C supports septic etiology [1]
- Neurovascular: Ulnar nerve function (proximity to olecranon)
11. Lab Studies
- Nonseptic bursitis: Labs generally unnecessary if clinical picture is clear
- If septic bursitis suspected:
- Bursal aspirate (when performed):
- Cell count: WBC >3,000 cells/μL with >50% PMNs suggests septic [1]
- Gram stain (positive in ~50% of septic cases)
- Culture and sensitivity — gold standard
- Crystal analysis (monosodium urate for gout, CPPD for pseudogout)
- Glucose: Fluid-to-serum glucose ratio <50% suggests infection [1]
- Gross appearance: Purulent aspirate highly suggestive of infection
- Blood tests: CBC with differential, CRP, ESR (elevated inflammatory markers support but do not confirm infection)
- Blood cultures if systemically ill or febrile
- Pearl: Empiric antibiotics without aspiration resulted in 88% uncomplicated resolution in one ED cohort, suggesting aspiration may not be mandatory in select, non-toxic patients [11-12]
12. Imaging
- First-line: Plain radiographs of the elbow — rule out fracture, foreign body, osteomyelitis, olecranon spur
- Ultrasound: Useful to confirm bursal fluid collection, distinguish from cellulitis, guide aspiration, and assess for septations or debris [4]
- MRI: Rarely needed; reserved for suspected osteomyelitis, deep abscess, or atypical presentations
- CT: Not routinely indicated; may help if concern for bony involvement
- When imaging is unnecessary: Clinically obvious nonseptic bursitis with classic presentation and no trauma
13. Special Tests
- Bursal aspiration: Diagnostic gold standard for differentiating septic vs. aseptic; send for cell count, Gram stain, culture, crystals, glucose [1][10]
- Point-of-care ultrasound (POCUS): Confirm fluid collection, assess volume, guide aspiration, identify septations
- Aspiration technique: Use lateral approach to avoid creating a chronic draining sinus over the olecranon tip; use aseptic technique to minimize iatrogenic infection risk
14. ECG
- Not routinely indicated for olecranon bursitis
- Consider if patient is septic/febrile with hemodynamic instability (standard sepsis workup)
15. Assessment
Clinical classification is the cornerstone of management
- Nonseptic/aseptic bursitis (~2/3 of cases): Microtraumatic, inflammatory (gout/RA), or hemorrhagic. Self-limited in most cases. Resolution expected in 2–4 weeks with conservative management [3][7]
- Septic bursitis (~1/3 of cases): Most commonly caused by S. aureus (73%), followed by streptococci (19%). Overlying skin break is the usual portal of entry. Distinguishing from aseptic bursitis can be challenging due to overlapping clinical features [2][9]
- Severity stratification:
- Mild: Localized swelling, no systemic signs → outpatient management
- Moderate: Erythema/warmth with mild tenderness, no fever → outpatient with close follow-up
- Severe: Fever, extensive cellulitis, systemic toxicity, immunocompromised → inpatient management
- Complications: Chronic/recurrent bursitis, draining sinus tract (especially post-aspiration), osteomyelitis (rare), bacteremia
16. Treatment Plan
Nonseptic bursitis
- PRICE: Protection, rest, ice, compression (elbow pad/wrap), elevation [1][3]
- NSAIDs: Short course (7–14 days) [7]
- Activity modification: Avoid direct pressure on the olecranon; use elbow padding
- Aspiration: Generally not recommended for nonseptic bursitis due to risk of iatrogenic infection [4]
- Corticosteroid injection: Consider only for refractory cases after infection is excluded; 40 mg triamcinolone with 1 mL lidocaine [7-8]
- Surgical bursectomy: Reserved for chronic/recurrent cases unresponsive to conservative management [10]
Septic bursitis
- Mild, non-toxic patients:
- Empiric oral antibiotics covering S. aureus for ≥14 days [9]
- Aspiration may be deferred in select uncomplicated cases — 88% resolution with empiric antibiotics alone [11-12]
- If aspiration performed, send fluid for Gram stain, culture, cell count, crystals, glucose
- Close outpatient follow-up in 48–72 hours
- Moderate-severe or immunocompromised:
- Bursal aspiration for diagnostic confirmation
- IV antibiotics (vancomycin if MRSA concern) [9]
- Serial aspirations or surgical drainage if no improvement
- Bursectomy for refractory cases (26% of septic cases in one series required surgery) [9]
17. Disposition
- Discharge criteria:
- Non-toxic appearance, no fever
- Able to tolerate oral antibiotics (if septic)
- Reliable follow-up available within 48–72 hours
- Immunocompetent
- Admission criteria:
- Systemic toxicity (fever, tachycardia, hypotension)
- Extensive cellulitis requiring IV antibiotics [9]
- Immunocompromised with suspected septic bursitis
- Failed outpatient antibiotic therapy
- Concern for septic arthritis or osteomyelitis
- Need for surgical drainage/bursectomy
- Observation: Consider for borderline cases — low-grade fever, moderate cellulitis, uncertain diagnosis
- Specialist consultation triggers:
- Orthopedic surgery: Refractory/recurrent bursitis, need for bursectomy, concern for septic arthritis
- Infectious disease: Immunocompromised patients, unusual organisms, treatment failure
- Rheumatology: Suspected crystal arthropathy or inflammatory arthritis
18. Follow Up / Return Precautions
- Follow-up timing:
- Septic bursitis: 48–72 hours for reassessment of clinical response to antibiotics [11]
- Nonseptic bursitis: 1–2 weeks; weekly follow-up until resolution [7]
- Return precautions — advise return for:
- Worsening redness, swelling, or pain
- New or worsening fever/chills
- Red streaking up the arm
- Inability to tolerate oral medications
- Drainage from the elbow
- No improvement after 48–72 hours of antibiotics
- Patient counseling:
- Avoid leaning on the affected elbow; use elbow pads when resuming activities
- Complete the full antibiotic course if prescribed (minimum 14 days for septic) [9]
- Condition may recur — address underlying risk factors (occupational modification, gout management)
- Nonseptic bursitis is typically self-limited with expected resolution in 2–4 weeks [7]
References
1. Prepatellar and Olecranon Bursitis: Literature Review and Development of a Treatment Algorithm. — Baumbach SF, Lobo CM, Badyine I, Mutschler W, Kanz KG. Archives of Orthopaedic and Trauma Surgery. 2014.
2. Olecranon Bursitis. — Reilly D, Kamineni S. Journal of Shoulder and Elbow Surgery. 2016.
3. Clinical Management of Olecranon Bursitis: A Review. — Nchinda NN, Wolf JM. The Journal of Hand Surgery. 2021.
4. Common Superficial Bursitis. — Khodaee M. American Family Physician. 2017.
5. 2023 French Recommendations for Diagnosing and Managing Prepatellar and Olecranon Septic Bursitis. — Darrieutort-Laffite C, Coiffier G, Aïm F, et al. Joint Bone Spine. 2024.
6. Infectious Olecranon and Patellar Bursitis: Short-Course Adjuvant Antibiotic Therapy Is Not a Risk Factor for Recurrence in Adult Hospitalized Patients. — Perez C, Huttner A, Assal M, et al. The Journal of Antimicrobial Chemotherapy. 2010.
7. A Randomized Trial Among Compression Plus Nonsteroidal Antiinflammatory Drugs, Aspiration, and Aspiration With Steroid Injection for Nonseptic Olecranon Bursitis. — Kim JY, Chung SW, Kim JH, et al. Clinical Orthopaedics and Related Research. 2016.
8. Use and Safety of Corticosteroid Injections in Joints and Musculoskeletal Soft Tissue: Guidelines From the American Society of Regional Anesthesia and Pain Medicine, the American Academy of Pain Medicine, the American Society of Interventional Pain Physicians, and the International Pain and Spine Intervention Society. — Benzon HT, Provenzano DA, Nagpal A, et al. Regional Anesthesia and Pain Medicine. 2025.
9. Clinical Characteristics and Management of Olecranon and Prepatellar Septic Bursitis in a Multicentre Study. — Charret L, Bart G, Hoppe E, et al. The Journal of Antimicrobial Chemotherapy. 2021.
10. ACOEM Practice Guidelines: Elbow Disorders. — Hegmann KT, Hoffman HE, Belcourt RM, et al. Journal of Occupational and Environmental Medicine. 2013.
11. Efficacy of Empiric Antibiotic Management of Septic Olecranon Bursitis Without Bursal Aspiration in Emergency Department Patients. — Beyde A, Thomas AL, Colbenson KM, et al. Academic Emergency Medicine : Official Journal of the Society for Academic Emergency Medicine. 2022.
12. Empirical Treatment of Uncomplicated Septic Olecranon Bursitis Without Aspiration. — Deal JB, Vaslow AS, Bickley RJ, Verwiebe EG, Ryan PM. The Journal of Hand Surgery. 2020.